| 1 | Science | 3,715 | 301.3K | 54 | 84 |
| 2 | Physics | 4,055 | 282.6K | 77 | 97 |
| 3 | Astrophysics | 2,870 | 271.8K | 38 | 29 |
| 4 | Biology | 3,834 | 222.9K | 50 | 124 |
| 5 | Medicine | 3,701 | 214.8K | 58 | 65 |
| 6 | Spectrum analysis | 2,534 | 198.9K | 25 | 22 |
| 7 | Biochemistry | 4,275 | 192.8K | 45 | 53 |
| 8 | Molecular Biology | 2,509 | 167.4K | 57 | 65 |
| 9 | Microbiology | 2,286 | 164.9K | 24 | 31 |
| 10 | Chemistry | 2,710 | 159.1K | 104 | 122 |
| 11 | Astronomy | 1,936 | 154.4K | 47 | 37 |
| 12 | Nuclear Physics | 2,776 | 135.8K | 37 | 28 |
| 13 | Neurology | 2,342 | 135.6K | 54 | 71 |
| 14 | United States | 4,101 | 110.6K | 6 | 13 |
| 15 | Psychology | 1,881 | 109.3K | 17 | 19 |
| 16 | Hematology | 1,895 | 107.9K | 17 | 14 |
| 17 | Research | 2,669 | 103.5K | 46 | 51 |
| 18 | Materials | 1,595 | 98.5K | 88 | 69 |
| 19 | Ecology | 1,379 | 93.3K | 62 | 66 |
| 20 | Cell Biology | 892 | 91.1K | 66 | 92 |
| 21 | Natural history | 542 | 87.5K | 91 | 170 |
| 22 | Cytology | 899 | 83.1K | 88 | 103 |
| 23 | Medical genetics | 643 | 82.6K | 58 | 29 |
| 24 | management | 579 | 81.2K | 21 | 13 |
| 25 | Cancer | 1,044 | 73.8K | 26 | 20 |
| 26 | Virology | 763 | 71.9K | 54 | 80 |
| 27 | Botany | 1,212 | 70.5K | 20 | 26 |
| 28 | Environment | 979 | 69.9K | 32 | 37 |
| 29 | Behavior | 864 | 67.6K | 29 | 11 |
| 30 | Pediatrics | 1,573 | 62.9K | 14 | 27 |
| 31 | Social Psychology | 935 | 59.9K | 6 | 12 |
| 32 | Genetics | 821 | 56.3K | 63 | 92 |
| 33 | Urology | 1,283 | 54.8K | 8 | 9 |
| 34 | Immunology | 956 | 53.8K | 42 | 65 |
| 35 | Materials Science | 1,068 | 51.7K | 76 | 63 |
| 36 | Psychophysiology | 917 | 50.6K | 34 | 37 |
| 37 | Human genetics | 313 | 50.4K | 90 | 130 |
| 38 | Metallurgy | 761 | 49.8K | 15 | 8 |
| 39 | Solid State Physics | 1,175 | 47.4K | 83 | 78 |
| 40 | Condensed Matter | 1,159 | 46.9K | 73 | 79 |
| 41 | Metals | 663 | 45.7K | 15 | 9 |
| 42 | Psychiatry | 904 | 45.2K | 65 | 80 |
| 43 | Biotechnology | 721 | 44.7K | 102 | 91 |
| 44 | Pollution | 755 | 44.7K | 76 | 78 |
| 45 | Biophysics | 1,261 | 44.1K | 63 | 75 |
| 46 | Sociology | 720 | 43.8K | 13 | 11 |
| 47 | human behavior | 457 | 43.7K | 35 | 16 |
| 48 | Radio | 885 | 43.6K | 5 | 6 |
| 49 | Communication | 694 | 42.4K | 9 | 2 |
| 50 | Oncology | 493 | 42.3K | 18 | 17 |
| 51 | Quantum Gravity | 908 | 42.2K | 39 | 39 |
| 52 | Pharmacology | 1,206 | 42.0K | 55 | 67 |
| 53 | Nanotechnology | 577 | 40.5K | 188 | 158 |
| 54 | Public Health | 776 | 40.2K | 107 | 85 |
| 55 | Neurophysiology | 551 | 39.7K | 78 | 78 |
| 56 | Electronics | 631 | 38.9K | 60 | 16 |
| 57 | Physiology | 1,036 | 38.7K | 48 | 69 |
| 58 | Endocrinology | 693 | 37.9K | 59 | 76 |
| 59 | Surgery | 361 | 37.1K | 44 | 51 |
| 60 | Economics | 732 | 36.3K | 53 | 47 |
| 61 | Mathematics | 2,082 | 35.7K | 18 | 23 |
| 62 | Nutrition | 806 | 35.1K | 25 | 28 |
| 63 | Environmental Engineering | 572 | 34.5K | 35 | 38 |
| 64 | Research Design | 121 | 34.1K | 56 | 6 |
| 65 | personality | 422 | 33.2K | 9 | 14 |
| 66 | Liposomes | 36 | 31.9K | 29 | 1 |
| 67 | Radio waves | 743 | 31.9K | 2 | 2 |
| 68 | Lipid bilayers | 34 | 31.8K | 29 | 1 |
| 69 | Intercultural Communication | 9 | 31.8K | 146 | 1 |
| 70 | Soil Science | 504 | 31.8K | 16 | 9 |
| 71 | Cross-Cultural Studies | 10 | 31.8K | 286 | 1 |
| 72 | Education | 1,446 | 31.5K | 8 | 19 |
| 73 | Environmental Health | 548 | 31.2K | 114 | 114 |
| 74 | Chemical Engineering | 584 | 30.1K | 147 | 115 |
| 75 | Bioengineering | 476 | 30.1K | 86 | 103 |
| 76 | Psychometrics | 145 | 29.2K | 13 | 3 |
| 77 | Metabolism | 385 | 29.0K | 93 | 79 |
| 78 | Geography | 654 | 28.8K | 5 | 8 |
| 79 | Child Development | 572 | 28.2K | 18 | 28 |
| 80 | Metabolic diseases | 318 | 27.3K | 80 | 73 |
| 81 | Microbial Ecology | 383 | 27.1K | 27 | 48 |
| 82 | Immunity | 232 | 27.1K | 78 | 99 |
| 83 | Statistics | 637 | 26.7K | 22 | 31 |
| 84 | Obstetrics | 786 | 25.5K | 25 | 31 |
| 85 | marketing | 207 | 25.4K | 26 | 26 |
| 86 | Electrochemistry | 574 | 25.1K | 103 | 38 |
| 87 | Medical Microbiology | 357 | 25.0K | 23 | 28 |
| 88 | Telecommunication | 333 | 24.7K | 87 | 47 |
| 89 | Plant cells | 152 | 24.5K | 77 | 53 |
| 90 | Cardiovascular system | 333 | 24.3K | 46 | 60 |
| 91 | Animal Behavior | 345 | 24.3K | 45 | 31 |
| 92 | Operations Research | 358 | 24.1K | 21 | 11 |
| 93 | Biomedical Engineering | 514 | 22.7K | 107 | 77 |
| 94 | Plants | 198 | 22.6K | 66 | 45 |
| 95 | Child | 955 | 22.5K | 7 | 17 |
| 96 | Geophysics | 591 | 21.9K | 157 | 163 |
| 97 | Geology | 466 | 20.9K | 108 | 95 |
| 98 | Brain | 405 | 20.9K | 81 | 79 |
| 99 | Catalysis | 420 | 20.9K | 157 | 157 |
| 100 | Pathology | 361 | 20.9K | 41 | 45 |
| 101 | viruses | 335 | 20.8K | 41 | 55 |
| 102 | Speech | 353 | 20.6K | 10 | 5 |
| 103 | nucleic acids | 322 | 20.5K | 27 | 75 |
| 104 | Biocompatible Materials | 365 | 20.5K | 174 | 170 |
| 105 | Polymers | 434 | 20.4K | 225 | 152 |
| 106 | Entomology | 710 | 20.1K | 16 | 17 |
| 107 | Social Sciences | 651 | 20.1K | 23 | 21 |
| 108 | Speech Disorders | 371 | 19.9K | 18 | 8 |
| 109 | Ethology | 251 | 19.8K | 47 | 26 |
| 110 | Pharmaceutical Chemistry | 550 | 19.6K | 49 | 78 |
| 111 | Medical Oncology | 512 | 19.6K | 20 | 38 |
| 112 | Neuroimmunology | 253 | 19.5K | 2 | 2 |
| 113 | environmental pollution | 504 | 19.4K | 60 | 88 |
| 114 | Nervous system | 215 | 19.3K | 111 | 78 |
| 115 | Meteorology | 278 | 19.3K | 114 | 85 |
| 116 | Production Management | 198 | 19.0K | 7 | 5 |
| 117 | plant molecular biology | 159 | 18.8K | 75 | 52 |
| 118 | Psychoneuroimmunology | 241 | 18.7K | 2 | 2 |
| 119 | Child psychology | 496 | 18.7K | 21 | 50 |
| 120 | Cognition | 301 | 18.3K | 46 | 40 |
| 121 | drug therapy | 564 | 18.2K | 19 | 36 |
| 122 | Business | 170 | 17.9K | 45 | 32 |
| 123 | Artificial Intelligence | 266 | 17.5K | 124 | 96 |
| 124 | Decision making | 233 | 17.4K | 7 | 11 |
| 125 | Biochemical Engineering | 201 | 17.3K | 205 | 175 |
| 126 | Database Management | 169 | 17.3K | 19 | 5 |
| 127 | Neurochemistry | 321 | 17.3K | 71 | 58 |
| 128 | Sports Medicine | 435 | 17.2K | 27 | 32 |
| 129 | Genomics | 386 | 17.1K | 61 | 59 |
| 130 | Environmental Policy | 208 | 16.9K | 105 | 64 |
| 131 | Signal Processing | 302 | 16.9K | 106 | 90 |
| 132 | Agriculture | 470 | 16.8K | 21 | 19 |
| 133 | Food | 256 | 16.8K | 66 | 29 |
| 134 | Optics | 796 | 16.8K | 113 | 127 |
| 135 | Plant diseases | 460 | 16.7K | 27 | 29 |
| 136 | Toxicology | 452 | 16.7K | 108 | 105 |
| 137 | Medical Laboratory Science | 217 | 16.7K | 47 | 21 |
| 138 | Colloids | 307 | 16.6K | 189 | 118 |
| 139 | Developmental Disabilities | 261 | 16.6K | 10 | 12 |
| 140 | Diagnostic microbiology | 203 | 16.6K | 16 | 24 |
| 141 | Vocational guidance | 412 | 16.5K | 5 | 7 |
| 142 | Biomass Energy | 184 | 16.5K | 65 | 38 |
| 143 | food technology | 311 | 16.3K | 41 | 20 |
| 144 | Technology | 335 | 16.0K | 126 | 53 |
| 145 | Hypertension | 217 | 15.9K | 84 | 84 |
| 146 | Cytogenetics | 168 | 15.8K | 65 | 64 |
| 147 | finance | 156 | 15.7K | 87 | 15 |
| 148 | transport vesicles | 17 | 15.7K | 33 | 26 |
| 149 | Perception | 433 | 15.6K | 37 | 41 |
| 150 | Political Science | 325 | 15.5K | 29 | 21 |
| 151 | Information Theory | 203 | 15.4K | 40 | 30 |
| 152 | Mathematical Physics | 253 | 15.4K | 120 | 53 |
| 153 | behavioral medicine | 193 | 15.1K | 32 | 15 |
| 154 | Oncogenes | 163 | 15.1K | 39 | 34 |
| 155 | Climatology | 181 | 15.1K | 104 | 64 |
| 156 | Statistical physics | 437 | 15.1K | 149 | 125 |
| 157 | Health | 468 | 15.0K | 11 | 22 |
| 158 | Surface Chemistry | 278 | 15.0K | 197 | 121 |
| 159 | Teaching | 331 | 14.9K | 11 | 5 |
| 160 | Diet | 341 | 14.7K | 27 | 57 |
| 161 | Memory | 347 | 14.4K | 46 | 52 |
| 162 | Mental Disorders | 313 | 14.4K | 108 | 131 |
| 163 | Leukemia | 227 | 14.3K | 15 | 25 |
| 164 | Organic Chemistry | 487 | 14.2K | 37 | 57 |
| 165 | Engineering | 474 | 14.2K | 48 | 41 |
| 166 | Analytical Chemistry | 337 | 14.0K | 199 | 157 |
| 167 | Hydrology | 346 | 13.9K | 40 | 53 |
| 168 | Host-parasite interactions | 147 | 13.9K | 40 | 45 |
| 169 | Clinical Chemistry | 385 | 13.9K | 49 | 62 |
| 170 | Geochemistry | 270 | 13.9K | 104 | 101 |
| 171 | Planets | 240 | 13.8K | 112 | 84 |
| 172 | Bacteriology | 344 | 13.8K | 41 | 94 |
| 173 | Therapeutics | 237 | 13.6K | 43 | 42 |
| 174 | sanitation | 155 | 13.4K | 95 | 88 |
| 175 | soil management | 155 | 13.4K | 10 | 4 |
| 176 | Developmental Biology | 268 | 13.2K | 98 | 143 |
| 177 | Neurobiology | 195 | 13.2K | 91 | 95 |
| 178 | soil microbiology | 146 | 13.2K | 64 | 39 |
| 179 | Ergonomics | 629 | 12.9K | 5 | 5 |
| 180 | Pediatric Neurology | 84 | 12.9K | 89 | 59 |
| 181 | Adolescent | 729 | 12.8K | 6 | 28 |
| 182 | commerce | 90 | 12.7K | 52 | 37 |
| 183 | Automation | 184 | 12.6K | 118 | 95 |
| 184 | Economic History | 269 | 12.5K | 81 | 29 |
| 185 | tillage | 146 | 12.5K | 5 | 4 |
| 186 | Cell differentiation | 212 | 12.3K | 71 | 120 |
| 187 | Econometrics | 152 | 12.1K | 45 | 42 |
| 188 | Social behavior | 202 | 11.9K | 12 | 17 |
| 189 | nanoscience | 131 | 11.8K | 298 | 179 |
| 190 | environmental protection | 160 | 11.8K | 162 | 58 |
| 191 | Attention | 335 | 11.6K | 43 | 42 |
| 192 | Physical Therapy | 287 | 11.6K | 21 | 26 |
| 193 | Cybernetics | 199 | 11.6K | 25 | 27 |
| 194 | Virulence | 150 | 11.5K | 33 | 39 |
| 195 | Health Education | 429 | 11.4K | 17 | 24 |
| 196 | Soil biology | 144 | 11.3K | 29 | 25 |
| 197 | Neuropsychology | 307 | 11.2K | 51 | 65 |
| 198 | Agronomy | 261 | 11.0K | 15 | 16 |
| 199 | Regional Planning | 288 | 11.0K | 10 | 14 |
| 200 | Cognitive Science | 145 | 10.9K | 31 | 37 |
| 201 | Radiobiology | 257 | 10.9K | 51 | 63 |
| 202 | Agricultural Ecology | 213 | 10.8K | 14 | 13 |
| 203 | Adolescent Medicine | 153 | 10.7K | 16 | 13 |
| 204 | Earth Sciences | 214 | 10.6K | 150 | 130 |
| 205 | Environmental Chemistry | 157 | 10.5K | 50 | 97 |
| 206 | Plant physiology | 159 | 10.3K | 104 | 101 |
| 206 | biological evolution | 196 | 10.3K | 98 | 165 |
| 208 | Ophthalmology | 256 | 10.2K | 81 | 82 |
| 209 | Combinatorial analysis | 222 | 10.2K | 7 | 4 |
| 210 | Agricultural Chemistry | 211 | 10.1K | 85 | 50 |
| 211 | Nursing | 382 | 10.1K | 4 | 7 |
| 212 | gene mapping | 180 | 10.1K | 73 | 96 |
| 213 | Membranes | 163 | 10.1K | 85 | 68 |
| 214 | Insects | 138 | 10.0K | 37 | 13 |
| 215 | Computational Biology | 272 | 9.8K | 55 | 135 |
| 216 | Parenteral nutrition | 189 | 9.8K | 8 | 26 |
| 217 | Clinical Psychology | 268 | 9.7K | 18 | 53 |
| 218 | Critical Care | 160 | 9.7K | 78 | 112 |
| 219 | Critical Care Medicine | 160 | 9.7K | 79 | 112 |
| 220 | Pharmacy | 416 | 9.7K | 24 | 45 |
| 221 | Neurons | 46 | 9.6K | 108 | 112 |
| 222 | Visual Perception | 276 | 9.6K | 48 | 51 |
| 223 | Immunotherapy | 137 | 9.6K | 80 | 95 |
| 224 | Mental illness | 211 | 9.6K | 85 | 110 |
| 225 | rehabilitation | 326 | 9.6K | 40 | 62 |
| 226 | Computer Graphics | 292 | 9.6K | 39 | 57 |
| 227 | Immune system | 51 | 9.5K | 135 | 116 |
| 228 | Cognitive neuroscience | 122 | 9.5K | 55 | 65 |
| 229 | Family | 305 | 9.5K | 7 | 8 |
| 230 | Water | 181 | 9.5K | 125 | 156 |
| 231 | counseling | 385 | 9.5K | 7 | 16 |
| 232 | Biodiversity conservation | 101 | 9.3K | 128 | 131 |
| 233 | Dermatology | 433 | 9.2K | 40 | 66 |
| 234 | Molecular Genetics | 165 | 9.2K | 75 | 83 |
| 235 | Anatomy | 215 | 9.2K | 72 | 107 |
| 236 | Psychosomatic Medicine | 72 | 9.1K | 53 | 15 |
| 237 | Educational Psychology | 261 | 9.1K | 18 | 36 |
| 238 | Epidemiology | 332 | 9.0K | 135 | 220 |
| 238 | Environmental monitoring | 152 | 9.0K | 220 | 156 |
| 240 | polymerization | 245 | 9.0K | 319 | 265 |
| 241 | Signal Transduction | 132 | 9.0K | 34 | 30 |
| 242 | Physical Chemistry | 200 | 9.0K | 83 | 103 |
| 243 | Psychopharmacology | 148 | 8.9K | 91 | 98 |
| 244 | Orthopedics | 266 | 8.9K | 29 | 36 |
| 245 | actuators | 151 | 8.9K | 88 | 45 |
| 245 | transducers | 151 | 8.9K | 88 | 45 |
| 247 | Bioinformatics | 230 | 8.9K | 45 | 122 |
| 248 | Aging | 419 | 8.8K | 63 | 148 |
| 249 | Muscles | 160 | 8.8K | 11 | 5 |
| 250 | Molecular Spectroscopy | 286 | 8.8K | 10 | 8 |
| 251 | Body Image | 68 | 8.8K | 4 | 1 |
| 252 | Health Policy | 181 | 8.7K | 107 | 64 |
| 253 | Transplantation | 231 | 8.6K | 47 | 74 |
| 254 | Developmental Psychology | 173 | 8.5K | 36 | 42 |
| 255 | Molecular Microbiology | 126 | 8.5K | 22 | 37 |
| 256 | Bioorganic chemistry | 251 | 8.5K | 74 | 104 |
| 257 | genome | 140 | 8.4K | 74 | 142 |
| 258 | Biomechanics | 182 | 8.3K | 32 | 44 |
| 259 | Human Geography | 198 | 8.3K | 23 | 22 |
| 260 | Entrepreneurship | 43 | 8.3K | 55 | 28 |
| 261 | Control Theory | 149 | 8.3K | 93 | 39 |
| 262 | Linguistics | 215 | 8.2K | 26 | 32 |
| 263 | Mechanical Engineering | 267 | 8.1K | 63 | 31 |
| 264 | Wireless Communication Systems | 218 | 8.1K | 114 | 115 |
| 265 | Economic Development | 147 | 8.1K | 37 | 45 |
| 266 | Graph Theory | 127 | 8.1K | 8 | 2 |
| 266 | Microelectronics | 166 | 8.1K | 106 | 142 |
| 268 | Genetic therapy | 164 | 8.0K | 26 | 29 |
| 269 | miniaturization | 112 | 8.0K | 154 | 156 |
| 270 | gene therapy | 91 | 8.0K | 57 | 29 |
| 271 | cell physiology | 174 | 8.0K | 59 | 98 |
| 272 | arthritis | 135 | 7.9K | 74 | 92 |
| 273 | Nanostructured Materials | 196 | 7.9K | 230 | 235 |
| 274 | Transportation | 191 | 7.9K | 76 | 56 |
| 275 | Geriatrics | 465 | 7.9K | 76 | 164 |
| 276 | Chromosome mapping | 159 | 7.8K | 59 | 72 |
| 277 | Sports | 227 | 7.8K | 48 | 52 |
| 278 | Reproduction | 257 | 7.8K | 71 | 88 |
| 279 | Fisheries | 201 | 7.8K | 53 | 28 |
| 280 | Chemotherapy | 281 | 7.8K | 8 | 18 |
| 281 | Land use | 124 | 7.7K | 9 | 6 |
| 281 | Allergy | 128 | 7.7K | 68 | 139 |
| 283 | Electrical Engineering | 425 | 7.7K | 88 | 78 |
| 284 | Growth | 120 | 7.7K | 90 | 133 |
| 285 | Climate change | 53 | 7.7K | 134 | 121 |
| 286 | Eutrophication | 51 | 7.6K | 136 | 123 |
| 287 | carcinogens | 156 | 7.6K | 15 | 17 |
| 288 | Environmental Microbiology | 85 | 7.6K | 56 | 41 |
| 289 | Neuromuscular diseases | 148 | 7.6K | 10 | 5 |
| 290 | Health promotion | 257 | 7.5K | 25 | 42 |
| 291 | Matroids | 83 | 7.4K | 4 | 1 |
| 292 | Psycholinguistics | 150 | 7.3K | 35 | 47 |
| 293 | Learning | 154 | 7.3K | 46 | 54 |
| 294 | Public Administration | 169 | 7.3K | 31 | 31 |
| 295 | soil conservation | 85 | 7.3K | 14 | 3 |
| 296 | Renewable Energy Sources | 77 | 7.2K | 272 | 203 |
| 297 | organization | 58 | 7.2K | 61 | 54 |
| 298 | Drug delivery systems | 67 | 7.1K | 113 | 46 |
| 299 | Political Psychology | 78 | 7.1K | 3 | 3 |
| 300 | Obesity | 215 | 7.1K | 86 | 131 |
| 301 | mass transfer | 102 | 7.1K | 128 | 56 |
| 302 | Environmental Management | 149 | 7.0K | 108 | 113 |
| 303 | Nanostructures | 43 | 7.0K | 299 | 104 |
| 304 | Glass | 318 | 7.0K | 9 | 40 |
| 305 | System analysis | 186 | 6.9K | 59 | 51 |
| 306 | Genetic engineering | 152 | 6.9K | 67 | 89 |
| 307 | Respiration | 211 | 6.9K | 49 | 74 |
| 307 | Developing countries | 155 | 6.9K | 79 | 58 |
| 309 | Medical Anthropology | 118 | 6.9K | 74 | 73 |
| 310 | Ceramics | 332 | 6.9K | 16 | 43 |
| 311 | Vaccines | 145 | 6.8K | 94 | 57 |
| 312 | pottery | 314 | 6.8K | 10 | 40 |
| 313 | Plastics | 90 | 6.8K | 93 | 14 |
| 314 | computer networks | 221 | 6.7K | 67 | 80 |
| 315 | Microorganisms | 62 | 6.7K | 58 | 40 |
| 316 | Image Processing | 126 | 6.7K | 173 | 165 |
| 317 | Medical Physics | 175 | 6.7K | 118 | 107 |
| 318 | Organizational Behavior | 64 | 6.7K | 25 | 19 |
| 319 | Meteorites | 104 | 6.7K | 101 | 104 |
| 320 | consumer behavior | 106 | 6.6K | 3 | 5 |
| 321 | Criminology | 159 | 6.6K | 29 | 19 |
| 322 | plasticity | 71 | 6.5K | 8 | 5 |
| 323 | Tribology | 163 | 6.5K | 30 | 19 |
| 324 | Forest Management | 92 | 6.5K | 72 | 42 |
| 325 | Disease | 21 | 6.4K | 35 | 58 |
| 326 | Emergency Medicine | 314 | 6.4K | 21 | 39 |
| 327 | Energy Conversion | 54 | 6.4K | 171 | 159 |
| 328 | Embryology | 150 | 6.4K | 98 | 164 |
| 329 | Forest Ecology | 83 | 6.4K | 82 | 42 |
| 330 | land degradation | 75 | 6.3K | 9 | 3 |
| 330 | degradation | 75 | 6.3K | 9 | 3 |
| 332 | Energy Policy | 95 | 6.3K | 228 | 155 |
| 333 | Structural Engineering | 107 | 6.3K | 139 | 54 |
| 334 | mutagens | 112 | 6.3K | 19 | 20 |
| 335 | Carcinogenesis | 120 | 6.3K | 22 | 19 |
| 336 | families | 200 | 6.2K | 11 | 8 |
| 337 | psychotherapy | 116 | 6.2K | 85 | 91 |
| 338 | diseases | 15 | 6.2K | 64 | 64 |
| 339 | Sleep Disorders | 150 | 6.2K | 74 | 67 |
| 340 | Ecological Engineering | 118 | 6.2K | 4 | 3 |
| 341 | Population Genetics | 95 | 6.1K | 80 | 77 |
| 342 | Molecules | 92 | 6.1K | 120 | 30 |
| 343 | Social work | 376 | 6.1K | 18 | 23 |
| 344 | Breeding | 165 | 6.1K | 44 | 45 |
| 345 | Sleep | 148 | 6.1K | 76 | 79 |
| 346 | city planning | 171 | 6.0K | 42 | 38 |
| 347 | energy conservation | 75 | 6.0K | 203 | 143 |
| 348 | Manufacturing Processes | 220 | 6.0K | 77 | 85 |
| 349 | Rheumatology | 115 | 6.0K | 62 | 73 |
| 350 | preventive medicine | 138 | 5.9K | 50 | 71 |
| 351 | Bacterial infections | 31 | 5.9K | 107 | 48 |
| 352 | mycoses | 22 | 5.9K | 165 | 46 |
| 353 | Intellectual disability | 176 | 5.8K | 14 | 16 |
| 354 | Oceanography | 106 | 5.8K | 216 | 169 |
| 355 | Diabetes | 124 | 5.8K | 205 | 256 |
| 356 | Water pollution | 106 | 5.7K | 264 | 224 |
| 357 | Medical innovations | 74 | 5.7K | 55 | 85 |
| 358 | Composite Materials | 131 | 5.7K | 261 | 246 |
| 359 | Food Microbiology | 133 | 5.7K | 28 | 46 |
| 360 | Molecular structure | 102 | 5.6K | 152 | 139 |
| 361 | Europe | 154 | 5.6K | 203 | 123 |
| 362 | Communication in medicine | 146 | 5.6K | 9 | 6 |
| 363 | Oxidation-reduction | 98 | 5.6K | 13 | 26 |
| 364 | Animal ecology | 107 | 5.5K | 66 | 54 |
| 365 | Social problems | 68 | 5.5K | 25 | 15 |
| 366 | Histology | 126 | 5.5K | 84 | 101 |
| 367 | Evolution | 137 | 5.4K | 131 | 232 |
| 368 | Aquaculture | 135 | 5.4K | 89 | 59 |
| 369 | Criminal psychology | 81 | 5.4K | 47 | 22 |
| 370 | enzymes | 138 | 5.3K | 38 | 42 |
| 371 | Power Electronics | 84 | 5.3K | 112 | 83 |
| 372 | proteins | 170 | 5.3K | 80 | 129 |
| 373 | Plant Ecology | 78 | 5.2K | 165 | 119 |
| 374 | Paleoclimatology | 83 | 5.2K | 73 | 36 |
| 375 | Environmental Toxicology | 111 | 5.2K | 127 | 137 |
| 376 | Liver diseases | 69 | 5.1K | 199 | 220 |
| 377 | Diabetes mellitus | 118 | 5.1K | 181 | 258 |
| 378 | Antioxidants | 93 | 5.1K | 8 | 21 |
| 379 | Analytical Biochemistry | 112 | 5.1K | 53 | 55 |
| 380 | Gerontology | 336 | 5.1K | 54 | 84 |
| 381 | free radicals | 110 | 5.1K | 53 | 91 |
| 382 | Dentistry | 194 | 5.1K | 17 | 11 |
| 383 | Industrial Engineering | 140 | 5.0K | 70 | 54 |
| 384 | optical instruments | 141 | 5.0K | 11 | 16 |
| 385 | Stem cells | 128 | 5.0K | 78 | 95 |
| 386 | Autism | 111 | 5.0K | 21 | 28 |
| 387 | Paleogeography | 89 | 4.9K | 39 | 22 |
| 388 | Language Disorders | 242 | 4.9K | 14 | 31 |
| 389 | Lipids | 67 | 4.9K | 100 | 69 |
| 390 | Demography | 87 | 4.9K | 36 | 31 |
| 391 | crime | 95 | 4.9K | 17 | 14 |
| 392 | cryosphere | 59 | 4.9K | 26 | 16 |
| 393 | Cell death | 81 | 4.9K | 103 | 184 |
| 394 | Environmental Law | 18 | 4.8K | 329 | 72 |
| 395 | innovation | 24 | 4.8K | 67 | 28 |
| 396 | Molecular ecology | 83 | 4.8K | 76 | 112 |
| 397 | health services | 200 | 4.7K | 18 | 28 |
| 398 | Dynamics | 147 | 4.7K | 14 | 9 |
| 398 | Substance Abuse | 214 | 4.7K | 61 | 79 |
| 400 | Pharmacogenetics | 99 | 4.7K | 31 | 30 |
| 401 | visualization | 324 | 4.7K | 9 | 16 |
| 402 | Zoology | 144 | 4.7K | 174 | 137 |
| 403 | Cell metabolism | 23 | 4.7K | 125 | 108 |
| 404 | Biometrics | 193 | 4.7K | 30 | 67 |
| 405 | Politics | 104 | 4.7K | 23 | 10 |
| 405 | government | 104 | 4.7K | 38 | 12 |
| 405 | drug development | 59 | 4.7K | 78 | 99 |
| 408 | Special Education | 201 | 4.7K | 15 | 25 |
| 409 | alcoholism | 222 | 4.7K | 63 | 108 |
| 410 | Birds | 226 | 4.6K | 25 | 35 |
| 411 | Homeostasis | 18 | 4.6K | 119 | 107 |
| 412 | Microwaves | 199 | 4.6K | 49 | 59 |
| 413 | Venture Capital | 17 | 4.6K | 39 | 20 |
| 414 | Fluid Dynamics | 104 | 4.6K | 54 | 31 |
| 415 | Great Lakes | 115 | 4.6K | 16 | 11 |
| 416 | Adolescent Psychology | 144 | 4.6K | 14 | 24 |
| 417 | Enteral nutrition | 91 | 4.5K | 23 | 50 |
| 418 | Electromagnetism | 100 | 4.5K | 37 | 13 |
| 419 | Soil ecology | 75 | 4.5K | 25 | 17 |
| 420 | infection | 63 | 4.5K | 201 | 85 |
| 421 | United Kingdom | 91 | 4.4K | 131 | 139 |
| 422 | Public Policy | 178 | 4.4K | 43 | 73 |
| 423 | child abuse | 168 | 4.4K | 8 | 38 |
| 424 | water supply | 87 | 4.4K | 76 | 81 |
| 425 | Molecular evolution | 87 | 4.4K | 100 | 144 |
| 426 | Child welfare | 223 | 4.4K | 11 | 20 |
| 427 | Nuclear Energy | 112 | 4.4K | 95 | 32 |
| 428 | violence | 137 | 4.4K | 17 | 35 |
| 429 | Paleoecology | 82 | 4.4K | 62 | 33 |
| 430 | Quality Control | 136 | 4.4K | 29 | 36 |
| 431 | Cosmochemistry | 89 | 4.3K | 32 | 32 |
| 432 | Lung Transplantation | 108 | 4.3K | 26 | 33 |
| 432 | Heart transplantation | 108 | 4.3K | 26 | 33 |
| 434 | Data Mining | 49 | 4.3K | 148 | 90 |
| 435 | Exercise | 91 | 4.3K | 53 | 27 |
| 436 | Political Sociology | 60 | 4.3K | 16 | 9 |
| 437 | Genetic regulation | 101 | 4.2K | 61 | 150 |
| 438 | medical education | 217 | 4.2K | 87 | 121 |
| 439 | Recombinant DNA | 87 | 4.2K | 69 | 46 |
| 440 | Women's health | 157 | 4.2K | 27 | 29 |
| 441 | Environmental pollutants | 97 | 4.2K | 132 | 102 |
| 442 | Measurement | 111 | 4.2K | 43 | 21 |
| 443 | Medical Technology | 100 | 4.2K | 46 | 36 |
| 444 | Pharmacognosy | 95 | 4.2K | 107 | 89 |
| 445 | Neural circuitry | 43 | 4.2K | 305 | 95 |
| 446 | Urban Economics | 70 | 4.1K | 8 | 9 |
| 447 | Light | 62 | 4.1K | 68 | 126 |
| 448 | Veterinary Immunology | 112 | 4.1K | 11 | 8 |
| 449 | auditory perception | 69 | 4.1K | 10 | 11 |
| 450 | Parasitology | 158 | 4.1K | 96 | 111 |
| 451 | drug addiction | 174 | 4.1K | 53 | 97 |
| 452 | Infections | 45 | 4.1K | 158 | 76 |
| 453 | Mental Health | 189 | 4.1K | 37 | 60 |
| 454 | Fishery management | 88 | 4.0K | 40 | 12 |
| 455 | Wildlife conservation | 70 | 4.0K | 87 | 84 |
| 456 | adolescence | 121 | 4.0K | 37 | 52 |
| 457 | Biogeochemistry | 62 | 4.0K | 138 | 130 |
| 458 | natural products | 105 | 4.0K | 77 | 57 |
| 459 | Smoking | 167 | 4.0K | 27 | 44 |
| 460 | RNA | 95 | 4.0K | 5 | 14 |
| 461 | Sustainable Development | 43 | 4.0K | 221 | 103 |
| 462 | pollutants | 80 | 3.9K | 132 | 91 |
| 463 | Industrial Microbiology | 86 | 3.9K | 95 | 116 |
| 464 | world | 71 | 3.9K | 34 | 36 |
| 465 | Cosmology | 65 | 3.9K | 25 | 18 |
| 466 | behavior modification | 106 | 3.9K | 22 | 31 |
| 467 | Spine | 61 | 3.9K | 73 | 59 |
| 468 | human development | 89 | 3.9K | 42 | 55 |
| 469 | energy resources | 52 | 3.8K | 134 | 137 |
| 470 | Paleontology | 120 | 3.8K | 76 | 50 |
| 471 | Vision | 105 | 3.8K | 39 | 64 |
| 472 | Microbial Genetics | 40 | 3.8K | 23 | 8 |
| 473 | Molecular cloning | 76 | 3.8K | 66 | 50 |
| 473 | Genetic recombination | 76 | 3.8K | 60 | 47 |
| 475 | nuclear magnetic resonance | 154 | 3.8K | 39 | 63 |
| 476 | phytopathogenic bacteria | 37 | 3.8K | 23 | 8 |
| 477 | language | 305 | 3.7K | 2 | 39 |
| 478 | Molecular Pharmacology | 83 | 3.7K | 24 | 34 |
| 479 | Quantitative Research | 82 | 3.7K | 4 | 5 |
| 480 | Hearing | 193 | 3.7K | 17 | 32 |
| 481 | Health Services Research | 84 | 3.7K | 169 | 125 |
| 482 | Gene expression regulation | 84 | 3.7K | 55 | 130 |
| 483 | Clinical Immunology | 120 | 3.7K | 46 | 50 |
| 484 | Algebra | 297 | 3.6K | 6 | 7 |
| 485 | Plant tissue culture | 72 | 3.6K | 25 | 13 |
| 486 | Sustainable agriculture | 75 | 3.6K | 27 | 17 |
| 487 | nuclear astrophysics | 57 | 3.6K | 19 | 12 |
| 488 | Occupational Therapy | 223 | 3.6K | 15 | 15 |
| 489 | Health Services Administration | 68 | 3.6K | 76 | 46 |
| 490 | Metallography | 60 | 3.6K | 49 | 8 |
| 491 | behavior therapy | 136 | 3.6K | 34 | 63 |
| 492 | cardiac catheterization | 84 | 3.5K | 52 | 17 |
| 493 | Robotics | 119 | 3.5K | 89 | 104 |
| 494 | Learning disabilities | 149 | 3.5K | 17 | 31 |
| 495 | Animal breeding | 65 | 3.5K | 74 | 25 |
| 496 | data collection | 24 | 3.5K | 184 | 75 |
| 497 | Plant cell culture | 51 | 3.5K | 27 | 12 |
| 498 | Social perception | 41 | 3.5K | 3 | 1 |
| 499 | Speech Perception | 50 | 3.5K | 19 | 15 |
| 500 | Heart Failure | 105 | 3.5K | 22 | 35 |
| 501 | China | 155 | 3.4K | 185 | 153 |
| 502 | Radiography | 81 | 3.4K | 80 | 113 |
| 503 | Computer Vision | 74 | 3.4K | 93 | 148 |
| 504 | Civil Engineering | 184 | 3.4K | 31 | 21 |
| 505 | mathematical analysis | 203 | 3.4K | 87 | 78 |
| 506 | Nuclear Chemistry | 53 | 3.4K | 133 | 19 |
| 506 | Evidence-Based Medicine | 124 | 3.4K | 10 | 7 |
| 508 | sustainability | 25 | 3.4K | 134 | 48 |
| 509 | Photonics | 41 | 3.3K | 489 | 306 |
| 510 | Kidney diseases | 55 | 3.3K | 102 | 65 |
| 511 | Dietetics | 218 | 3.3K | 8 | 24 |
| 512 | Family Therapy | 176 | 3.3K | 9 | 11 |
| 513 | Magnetic Resonance Spectroscopy | 141 | 3.3K | 51 | 70 |
| 514 | Engineering Mathematics | 83 | 3.3K | 139 | 66 |
| 515 | older people | 304 | 3.3K | 43 | 78 |
| 516 | Otolaryngology | 139 | 3.3K | 19 | 30 |
| 517 | Nonlinear Dynamics | 125 | 3.3K | 200 | 231 |
| 518 | Youth | 80 | 3.2K | 23 | 35 |
| 519 | Phonetics | 83 | 3.2K | 5 | 9 |
| 520 | economic policy | 162 | 3.2K | 65 | 99 |
| 521 | Nuclear Engineering | 237 | 3.2K | 93 | 104 |
| 522 | Inflammation | 40 | 3.2K | 111 | 40 |
| 523 | Sound | 82 | 3.2K | 57 | 61 |
| 524 | Nephrology | 48 | 3.2K | 81 | 56 |
| 524 | Geodesy | 101 | 3.2K | 16 | 11 |
| 526 | Radiochemistry | 35 | 3.2K | 182 | 13 |
| 527 | Economic planning | 99 | 3.2K | 1 | 6 |
| 528 | Experimental Psychology | 74 | 3.2K | 27 | 56 |
| 529 | Tourism | 41 | 3.2K | 245 | 164 |
| 530 | Developmental Genetics | 53 | 3.1K | 80 | 138 |
| 531 | Systems Biology | 102 | 3.1K | 61 | 70 |
| 532 | Urban Policy | 59 | 3.1K | 34 | 11 |
| 532 | Earthquake Engineering | 55 | 3.1K | 237 | 145 |
| 534 | Industrial Safety | 108 | 3.1K | 25 | 44 |
| 535 | Marriage | 122 | 3.1K | 10 | 11 |
| 536 | Production Engineering | 145 | 3.1K | 82 | 89 |
| 537 | Combustion | 82 | 3.0K | 136 | 121 |
| 538 | Pharmaceutical Technology | 54 | 3.0K | 163 | 84 |
| 539 | Magnetic Resonance Imaging | 121 | 3.0K | 13 | 24 |
| 540 | Geographic information systems | 86 | 3.0K | 26 | 8 |
| 541 | Agricultural Science | 34 | 3.0K | 32 | 19 |
| 542 | Solid State Chemistry | 83 | 3.0K | 318 | 178 |
| 543 | Community Psychology | 48 | 3.0K | 45 | 63 |
| 544 | epilepsy | 103 | 3.0K | 31 | 45 |
| 545 | Mobile Computing | 59 | 3.0K | 101 | 50 |
| 546 | biopolymers | 47 | 3.0K | 198 | 87 |
| 547 | educational innovations | 290 | 3.0K | 1 | 6 |
| 548 | Mechatronics | 61 | 3.0K | 54 | 32 |
| 549 | Mycology | 103 | 3.0K | 105 | 160 |
| 550 | Soft Condensed Matter | 48 | 3.0K | 175 | 77 |
| 551 | Strategic planning | 35 | 2.9K | 42 | 15 |
| 552 | Superconductors | 198 | 2.9K | 44 | 48 |
| 553 | recreation | 146 | 2.9K | 12 | 8 |
| 554 | fertility | 73 | 2.9K | 110 | 140 |
| 555 | Parasitic Diseases | 75 | 2.9K | 163 | 169 |
| 556 | Software Engineering | 85 | 2.9K | 50 | 76 |
| 557 | Proteome | 67 | 2.8K | 87 | 129 |
| 558 | Astrocytes | 36 | 2.8K | 34 | 35 |
| 559 | Intelligent Transportation Systems | 59 | 2.8K | 102 | 87 |
| 560 | Mineralogy | 102 | 2.8K | 130 | 171 |
| 561 | Development | 60 | 2.8K | 46 | 53 |
| 562 | Boundary Value Problems | 72 | 2.8K | 31 | 15 |
| 563 | Infertility | 66 | 2.8K | 113 | 136 |
| 564 | Antenna Arrays | 71 | 2.8K | 27 | 14 |
| 565 | vibration | 91 | 2.8K | 63 | 77 |
| 566 | Risk | 56 | 2.8K | 24 | 27 |
| 567 | Probability | 75 | 2.8K | 15 | 25 |
| 568 | Philosophy | 264 | 2.8K | 46 | 63 |
| 569 | Differential Equations | 73 | 2.7K | 51 | 21 |
| 570 | protein | 94 | 2.7K | 68 | 154 |
| 571 | Hormones | 89 | 2.7K | 71 | 135 |
| 572 | Anthropology | 236 | 2.7K | 57 | 106 |
| 573 | Small Business | 21 | 2.7K | 143 | 90 |
| 574 | Economic Assistance | 50 | 2.7K | 44 | 47 |
| 575 | Systems Engineering | 82 | 2.7K | 177 | 148 |
| 576 | Nutrition physiology | 38 | 2.7K | 64 | 36 |
| 577 | Mental Health Services | 94 | 2.7K | 88 | 68 |
| 578 | plant communities | 47 | 2.7K | 148 | 161 |
| 579 | Conservation Biology | 68 | 2.7K | 91 | 129 |
| 580 | Bacteriophages | 13 | 2.7K | 3 | 1 |
| 581 | health behavior | 99 | 2.6K | 72 | 101 |
| 582 | Reading | 113 | 2.6K | 13 | 30 |
| 583 | Combinatorial chemistry | 49 | 2.6K | 68 | 81 |
| 584 | International Relations | 67 | 2.6K | 108 | 50 |
| 585 | Insect biochemistry | 42 | 2.6K | 42 | 28 |
| 586 | Food service management | 47 | 2.6K | 28 | 29 |
| 587 | Biodiversity | 97 | 2.6K | 147 | 308 |
| 588 | Parallel Processing | 76 | 2.6K | 15 | 35 |
| 589 | peace | 67 | 2.6K | 20 | 32 |
| 590 | Communication in politics | 32 | 2.6K | 5 | 1 |
| 591 | Medical Imaging | 100 | 2.6K | 13 | 31 |
| 592 | Optical materials | 56 | 2.6K | 549 | 501 |
| 593 | Archaeology | 102 | 2.6K | 108 | 109 |
| 594 | Ornithology | 145 | 2.6K | 30 | 44 |
| 595 | pain | 92 | 2.5K | 117 | 215 |
| 596 | Phylogeny | 50 | 2.5K | 68 | 78 |
| 597 | Audiology | 112 | 2.5K | 47 | 80 |
| 598 | biological factors | 77 | 2.5K | 113 | 152 |
| 599 | machinery | 59 | 2.5K | 36 | 12 |
| 600 | Fluid Mechanics | 90 | 2.5K | 135 | 151 |
| 601 | Music | 151 | 2.5K | 7 | 16 |
| 602 | Pediatric Nursing | 104 | 2.5K | 5 | 6 |
| 602 | Thrombosis | 54 | 2.5K | 146 | 149 |
| 604 | Mass Spectrometry | 98 | 2.5K | 56 | 93 |
| 605 | Neurosurgery | 67 | 2.5K | 68 | 96 |
| 606 | Vocational Education | 118 | 2.5K | 7 | 10 |
| 607 | Organic Geochemistry | 21 | 2.4K | 78 | 39 |
| 608 | Immunopathology | 93 | 2.4K | 97 | 148 |
| 609 | Socialization | 55 | 2.4K | 25 | 29 |
| 610 | environmental exposure | 50 | 2.4K | 211 | 145 |
| 611 | Radiology | 105 | 2.4K | 97 | 74 |
| 612 | Information Science | 146 | 2.4K | 103 | 265 |
| 613 | Emotions | 53 | 2.4K | 47 | 62 |
| 614 | Plant Genetics | 33 | 2.4K | 110 | 89 |
| 615 | Atmospheric Physics | 68 | 2.4K | 290 | 318 |
| 616 | Landscape Ecology | 32 | 2.4K | 41 | 25 |
| 617 | Marine Biology | 84 | 2.4K | 371 | 418 |
| 618 | international cooperation | 50 | 2.4K | 30 | 31 |
| 619 | Intelligence | 28 | 2.3K | 32 | 27 |
| 620 | Community Psychiatry | 57 | 2.3K | 107 | 106 |
| 621 | International Finance | 36 | 2.3K | 323 | 117 |
| 622 | Physical fitness | 46 | 2.3K | 99 | 89 |
| 623 | consumers | 55 | 2.3K | 4 | 6 |
| 624 | Regional Development | 53 | 2.3K | 5 | 3 |
| 624 | Development planning | 53 | 2.3K | 2 | 3 |
| 626 | Approximation Theory | 101 | 2.3K | 3 | 6 |
| 627 | Social interaction | 42 | 2.3K | 14 | 11 |
| 628 | Databases | 54 | 2.3K | 41 | 38 |
| 629 | Electrophysiology | 82 | 2.3K | 68 | 48 |
| 630 | Crystallography | 172 | 2.3K | 37 | 110 |
| 631 | vascular diseases | 49 | 2.3K | 81 | 123 |
| 632 | lasers | 75 | 2.3K | 297 | 200 |
| 633 | Bioenergetics | 59 | 2.3K | 53 | 81 |
| 634 | Financial management | 42 | 2.3K | 29 | 24 |
| 635 | Drug design | 60 | 2.3K | 103 | 113 |
| 636 | Plant genetic engineering | 51 | 2.2K | 95 | 114 |
| 637 | Obstetric Nursing | 93 | 2.2K | 4 | 4 |
| 638 | Early Childhood Education | 79 | 2.2K | 13 | 10 |
| 639 | warfare | 45 | 2.2K | 15 | 22 |
| 640 | prostaglandins | 48 | 2.2K | 26 | 13 |
| 641 | War and Society | 42 | 2.2K | 12 | 21 |
| 642 | California | 95 | 2.2K | 16 | 23 |
| 643 | Primary health care | 123 | 2.2K | 98 | 158 |
| 644 | Histochemistry | 61 | 2.2K | 55 | 54 |
| 645 | viral genetics | 29 | 2.2K | 80 | 146 |
| 645 | Aggression | 51 | 2.2K | 11 | 23 |
| 647 | Smart Materials | 90 | 2.2K | 33 | 55 |
| 648 | Anxiety Disorders | 38 | 2.2K | 69 | 90 |
| 648 | Anxiety | 38 | 2.2K | 69 | 91 |
| 650 | Plasma devices | 52 | 2.2K | 23 | 21 |
| 651 | Ultrasonics | 53 | 2.1K | 114 | 93 |
| 652 | Electrochemical Analysis | 44 | 2.1K | 231 | 123 |
| 653 | drugs | 87 | 2.1K | 183 | 233 |
| 654 | Clinical Biochemistry | 61 | 2.1K | 101 | 105 |
| 655 | Risk Management | 46 | 2.1K | 36 | 32 |
| 656 | DNA polymerases | 19 | 2.1K | 118 | 132 |
| 657 | North America | 93 | 2.1K | 36 | 30 |
| 658 | Digestive system diseases | 78 | 2.1K | 72 | 70 |
| 659 | sexual behavior | 75 | 2.1K | 29 | 51 |
| 660 | Geomorphology | 40 | 2.1K | 243 | 194 |
| 661 | Energy metabolism | 55 | 2.1K | 53 | 78 |
| 662 | Fertilizers | 22 | 2.1K | 65 | 20 |
| 663 | ecosystem | 44 | 2.1K | 193 | 221 |
| 664 | Computer-Aided Design | 61 | 2.1K | 89 | 86 |
| 665 | Quality of life | 55 | 2.1K | 139 | 166 |
| 666 | Minority Health | 3 | 2.1K | 65 | 16 |
| 667 | General Surgery | 84 | 2.1K | 65 | 48 |
| 668 | Groundwater | 80 | 2.1K | 20 | 30 |
| 669 | Sexual health | 97 | 2.0K | 28 | 64 |
| 670 | Fungi | 32 | 2.0K | 216 | 153 |
| 671 | Traffic Engineering | 19 | 2.0K | 73 | 22 |
| 672 | Transportation Engineering | 31 | 2.0K | 31 | 16 |
| 673 | Information Technology | 39 | 2.0K | 402 | 266 |
| 674 | Environmental Geology | 59 | 2.0K | 105 | 111 |
| 675 | Magnetic Materials | 27 | 2.0K | 457 | 195 |
| 676 | Chemical Ecology | 49 | 2.0K | 38 | 42 |
| 677 | role | 45 | 2.0K | 17 | 21 |
| 678 | Diagnostic Imaging | 97 | 2.0K | 160 | 287 |
| 679 | Parasites | 58 | 2.0K | 144 | 126 |
| 680 | planning | 91 | 2.0K | 4 | 16 |
| 681 | urban forestry | 56 | 2.0K | 1 | 2 |
| 682 | pheromones | 47 | 2.0K | 32 | 37 |
| 683 | School Psychology | 84 | 2.0K | 28 | 44 |
| 684 | International security | 26 | 2.0K | 24 | 22 |
| 684 | animal diseases | 49 | 2.0K | 31 | 15 |
| 686 | Patient education | 48 | 1.9K | 64 | 64 |
| 687 | histological techniques | 56 | 1.9K | 40 | 66 |
| 688 | Semiconductors | 59 | 1.9K | 293 | 170 |
| 689 | Photography | 331 | 1.9K | 71 | 32 |
| 690 | Social policy | 75 | 1.9K | 40 | 38 |
| 691 | Oxidative stress | 31 | 1.9K | 87 | 103 |
| 691 | Thorax | 74 | 1.9K | 46 | 60 |
| 693 | Experimental Design | 49 | 1.9K | 19 | 37 |
| 694 | Microscopy | 74 | 1.9K | 82 | 116 |
| 695 | Environmental Education | 68 | 1.9K | 2 | 8 |
| 696 | Genetic Counseling | 56 | 1.9K | 14 | 5 |
| 697 | Land Use Planning | 30 | 1.9K | 35 | 23 |
| 698 | mammals | 47 | 1.9K | 103 | 58 |
| 699 | Remote Sensing | 140 | 1.9K | 41 | 70 |
| 700 | Invertebrates | 78 | 1.9K | 13 | 27 |
| 701 | Political Geography | 40 | 1.9K | 18 | 8 |
| 702 | Ocean Engineering | 34 | 1.8K | 470 | 281 |
| 703 | Radio wave propagation | 115 | 1.8K | 10 | 17 |
| 704 | animals | 52 | 1.8K | 111 | 63 |
| 705 | Comparative Physiology | 57 | 1.8K | 59 | 76 |
| 706 | global environmental change | 22 | 1.8K | 171 | 126 |
| 707 | Neuropsychiatry | 68 | 1.8K | 50 | 77 |
| 708 | Structural dynamics | 60 | 1.8K | 110 | 167 |
| 709 | complementary therapies | 96 | 1.8K | 57 | 96 |
| 710 | health planning | 93 | 1.8K | 124 | 168 |
| 711 | Nanoparticles | 40 | 1.8K | 344 | 303 |
| 712 | sex crimes | 67 | 1.8K | 26 | 38 |
| 713 | Maternal health services | 74 | 1.8K | 16 | 18 |
| 714 | international trade | 35 | 1.8K | 57 | 60 |
| 714 | probabilities | 140 | 1.8K | 41 | 61 |
| 716 | Asia | 73 | 1.8K | 244 | 172 |
| 717 | Sales management | 13 | 1.8K | 60 | 49 |
| 717 | selling | 13 | 1.8K | 60 | 49 |
| 719 | Plant breeding | 78 | 1.8K | 40 | 56 |
| 720 | Information Systems | 89 | 1.8K | 38 | 103 |
| 721 | Chromosomes | 38 | 1.7K | 130 | 125 |
| 722 | Mathematical Economics | 20 | 1.7K | 57 | 63 |
| 723 | Counseling Psychology | 31 | 1.7K | 28 | 24 |
| 724 | Photochemistry | 70 | 1.7K | 94 | 163 |
| 725 | Lipid | 19 | 1.7K | 66 | 31 |
| 726 | cytokines | 41 | 1.7K | 140 | 110 |
| 727 | Soil fertility | 26 | 1.7K | 37 | 31 |
| 728 | food handling | 56 | 1.7K | 43 | 59 |
| 729 | coal | 41 | 1.7K | 290 | 291 |
| 730 | Lipid metabolism | 18 | 1.7K | 69 | 33 |
| 731 | Population | 56 | 1.7K | 62 | 84 |
| 732 | biological invasions | 23 | 1.7K | 86 | 33 |
| 733 | Nuclear non-proliferation | 15 | 1.7K | 13 | 11 |
| 734 | mutation | 34 | 1.7K | 70 | 69 |
| 735 | Sociolinguistics | 41 | 1.7K | 22 | 15 |
| 736 | Proteomics | 41 | 1.7K | 134 | 169 |
| 737 | Environmental Psychology | 30 | 1.7K | 19 | 39 |
| 738 | plant viruses | 58 | 1.7K | 9 | 12 |
| 739 | Geometry | 139 | 1.7K | 17 | 25 |
| 739 | Radiation | 76 | 1.7K | 220 | 232 |
| 741 | Computer Science | 65 | 1.7K | 160 | 110 |
| 742 | Alternative Medicine | 78 | 1.7K | 66 | 103 |
| 743 | Numerical Analysis | 74 | 1.6K | 238 | 206 |
| 744 | cell membrane | 39 | 1.6K | 79 | 97 |
| 745 | Marriage counseling | 53 | 1.6K | 13 | 21 |
| 746 | Superconductivity | 55 | 1.6K | 40 | 36 |
| 747 | Bones | 46 | 1.6K | 89 | 163 |
| 748 | Orthopedic Surgery | 60 | 1.6K | 55 | 54 |
| 749 | Petrology | 37 | 1.6K | 229 | 218 |
| 750 | economic conditions | 21 | 1.6K | 107 | 63 |
| 751 | Protozoa | 26 | 1.6K | 49 | 49 |
| 752 | Australia | 87 | 1.6K | 140 | 159 |
| 753 | Algal blooms | 13 | 1.6K | 76 | 38 |
| 753 | Cyanobacteria | 13 | 1.6K | 76 | 38 |
| 753 | microalgae | 13 | 1.6K | 76 | 38 |
| 756 | Algorithms | 16 | 1.6K | 156 | 19 |
| 757 | Brain damage | 57 | 1.6K | 14 | 22 |
| 758 | Oxidation | 34 | 1.6K | 13 | 12 |
| 759 | Economic Thought | 14 | 1.6K | 74 | 59 |
| 760 | Social Change | 41 | 1.6K | 54 | 138 |
| 761 | child behavior | 58 | 1.6K | 14 | 39 |
| 762 | Educational Technology | 97 | 1.5K | 38 | 124 |
| 763 | Foodborne diseases | 68 | 1.5K | 10 | 11 |
| 764 | Plant Biotechnology | 26 | 1.5K | 151 | 99 |
| 765 | gastrointestinal tract | 19 | 1.5K | 41 | 26 |
| 766 | Wetland ecology | 43 | 1.5K | 18 | 17 |
| 767 | Steroids | 72 | 1.5K | 67 | 123 |
| 767 | cell interaction | 36 | 1.5K | 114 | 122 |
| 769 | Bioinorganic chemistry | 66 | 1.5K | 105 | 145 |
| 770 | Eating Disorders | 48 | 1.5K | 110 | 129 |
| 771 | Carbon | 21 | 1.5K | 413 | 340 |
| 772 | Functional Genomics | 18 | 1.5K | 51 | 23 |
| 773 | Green Chemistry | 41 | 1.5K | 341 | 477 |
| 774 | Quantum electronics | 45 | 1.5K | 324 | 226 |
| 775 | Hazardous waste | 29 | 1.5K | 101 | 116 |
| 776 | Number Theory | 125 | 1.5K | 4 | 5 |
| 777 | urban population | 26 | 1.5K | 26 | 39 |
| 778 | Performance | 39 | 1.5K | 14 | 25 |
| 779 | brain mapping | 16 | 1.5K | 237 | 146 |
| 780 | Clinical Trials | 53 | 1.4K | 62 | 60 |
| 781 | software | 30 | 1.4K | 133 | 82 |
| 782 | Immunochemistry | 42 | 1.4K | 103 | 80 |
| 783 | Elderly | 223 | 1.4K | 43 | 61 |
| 784 | Biogeography | 39 | 1.4K | 140 | 253 |
| 785 | Oral communication | 33 | 1.4K | 34 | 19 |
| 786 | Fracture mechanics | 74 | 1.4K | 154 | 209 |
| 786 | Animal genetics | 43 | 1.4K | 92 | 79 |
| 788 | Food additives | 57 | 1.4K | 98 | 194 |
| 789 | Building | 19 | 1.4K | 135 | 34 |
| 790 | Roads | 73 | 1.4K | 94 | 82 |
| 791 | Primates | 76 | 1.4K | 46 | 90 |
| 792 | Aerospace Engineering | 22 | 1.4K | 47 | 2 |
| 792 | Geomagnetism | 35 | 1.4K | 134 | 94 |
| 792 | Mass Media | 73 | 1.4K | 27 | 14 |
| 792 | disabilities | 44 | 1.4K | 73 | 68 |
| 796 | Systems Analysis | 60 | 1.4K | 50 | 67 |
| 797 | Animal Nutrition | 30 | 1.4K | 109 | 58 |
| 798 | blood transfusion | 63 | 1.4K | 86 | 93 |
| 798 | Food preferences | 30 | 1.4K | 40 | 37 |
| 800 | Immunopharmacology | 26 | 1.4K | 225 | 99 |
| 801 | industrial waste | 25 | 1.4K | 101 | 116 |
| 802 | Geotechnical Engineering | 52 | 1.4K | 40 | 63 |
| 803 | Detectors | 55 | 1.3K | 147 | 142 |
| 804 | Genes | 41 | 1.3K | 128 | 118 |
| 805 | Crystallization | 21 | 1.3K | 109 | 25 |
| 806 | Carbohydrates | 34 | 1.3K | 34 | 48 |
| 807 | Clinical Pharmacology | 47 | 1.3K | 203 | 203 |
| 808 | Human evolution | 38 | 1.3K | 67 | 96 |
| 809 | Morphology | 63 | 1.3K | 31 | 70 |
| 810 | radioactive waste | 19 | 1.3K | 143 | 123 |
| 811 | Cardiovascular diseases | 102 | 1.3K | 123 | 319 |
| 812 | Social Media | 50 | 1.3K | 1 | 5 |
| 813 | Comparative Psychology | 12 | 1.3K | 29 | 11 |
| 814 | Food Policy | 26 | 1.3K | 35 | 35 |
| 814 | agricultural policy | 26 | 1.3K | 26 | 26 |
| 816 | Functional Analysis | 70 | 1.3K | 96 | 113 |
| 817 | Law | 52 | 1.3K | 149 | 64 |
| 817 | Asthma | 58 | 1.3K | 27 | 44 |
| 819 | Structural design | 53 | 1.3K | 59 | 91 |
| 820 | Aquatic ecology | 53 | 1.3K | 58 | 77 |
| 821 | fuel cells | 30 | 1.3K | 329 | 397 |
| 822 | Algae | 58 | 1.3K | 56 | 116 |
| 823 | Health insurance | 31 | 1.3K | 85 | 94 |
| 824 | Microfabrication | 53 | 1.3K | 8 | 13 |
| 825 | cloning | 31 | 1.3K | 88 | 183 |
| 826 | Labor Economics | 39 | 1.3K | 27 | 53 |
| 826 | Career development | 52 | 1.3K | 6 | 7 |
| 828 | Consumer education | 52 | 1.3K | 3 | 22 |
| 829 | Growth factors | 21 | 1.3K | 16 | 45 |
| 830 | food contamination | 56 | 1.3K | 52 | 55 |
| 831 | Socioeconomic Factors | 46 | 1.3K | 54 | 68 |
| 832 | Rural Development | 33 | 1.3K | 44 | 50 |
| 832 | feeding behavior | 32 | 1.3K | 122 | 126 |
| 834 | Particle Physics | 8 | 1.2K | 88 | 27 |
| 835 | tomography | 40 | 1.2K | 30 | 25 |
| 836 | Telecommunication Systems | 37 | 1.2K | 251 | 118 |
| 837 | Intelligent Control Systems | 60 | 1.2K | 50 | 37 |
| 838 | Financial Institutions | 11 | 1.2K | 99 | 16 |
| 839 | Sarcopenia | 12 | 1.2K | 103 | 45 |
| 840 | Game Theory | 60 | 1.2K | 22 | 53 |
| 841 | Literacy | 53 | 1.2K | 5 | 5 |
| 842 | Europa | 16 | 1.2K | 120 | 33 |
| 843 | Social Issues | 33 | 1.2K | 22 | 27 |
| 844 | Electrophoresis | 51 | 1.2K | 189 | 250 |
| 845 | Contraception | 68 | 1.2K | 47 | 90 |
| 845 | Geriatric Oncology | 71 | 1.2K | 19 | 64 |
| 847 | Mortgages | 18 | 1.2K | 38 | 12 |
| 848 | Feeding and Eating Disorders | 38 | 1.2K | 135 | 141 |
| 849 | Biogeochemical cycles | 12 | 1.2K | 178 | 166 |
| 850 | Neuropharmacology | 19 | 1.2K | 135 | 54 |
| 851 | Schizophrenia | 51 | 1.2K | 173 | 294 |
| 851 | Chromatography | 55 | 1.2K | 167 | 186 |
| 853 | Atmospheric Chemistry | 22 | 1.2K | 351 | 364 |
| 853 | Chromatographic analysis | 57 | 1.2K | 229 | 224 |
| 855 | Elementary particles | 6 | 1.2K | 76 | 26 |
| 856 | Economic Geography | 37 | 1.2K | 23 | 26 |
| 857 | Natural resources | 46 | 1.2K | 73 | 146 |
| 858 | Transgenic plants | 31 | 1.2K | 50 | 57 |
| 859 | Ultrasonic Imaging | 28 | 1.2K | 60 | 25 |
| 860 | Ultrasound | 32 | 1.2K | 131 | 99 |
| 861 | Tropical Medicine | 121 | 1.2K | 65 | 225 |
| 862 | Organ transplantation | 96 | 1.1K | 12 | 25 |
| 863 | speech therapy | 72 | 1.1K | 20 | 39 |
| 864 | Autoimmune diseases | 15 | 1.1K | 192 | 92 |
| 865 | Sustainable Engineering | 30 | 1.1K | 359 | 408 |
| 866 | clay | 27 | 1.1K | 101 | 104 |
| 867 | clay minerals | 26 | 1.1K | 33 | 35 |
| 868 | Post-traumatic stress disorder | 41 | 1.1K | 111 | 178 |
| 869 | school psychologists | 36 | 1.1K | 22 | 38 |
| 870 | Geobiology | 35 | 1.1K | 41 | 50 |
| 871 | Seaweed | 49 | 1.1K | 36 | 96 |
| 872 | Social welfare | 57 | 1.1K | 41 | 44 |
| 873 | Nonverbal Communication | 12 | 1.1K | 48 | 16 |
| 874 | Food Preservation | 50 | 1.1K | 41 | 37 |
| 874 | Alzheimer's disease | 87 | 1.1K | 178 | 281 |
| 876 | Animal Biotechnology | 6 | 1.1K | 86 | 6 |
| 877 | Bipolar Disorder | 24 | 1.1K | 80 | 89 |
| 878 | Familial diseases | 37 | 1.1K | 11 | 10 |
| 879 | internet | 35 | 1.1K | 278 | 318 |
| 880 | hydrocolloids | 43 | 1.1K | 82 | 188 |
| 881 | polar regions | 48 | 1.1K | 53 | 68 |
| 882 | sports injuries | 53 | 1.1K | 24 | 20 |
| 883 | Criminal Law | 20 | 1.1K | 35 | 24 |
| 883 | Juvenile delinquency | 58 | 1.1K | 19 | 26 |
| 883 | livestock | 61 | 1.1K | 32 | 32 |
| 886 | Autism spectrum disorders | 7 | 1.1K | 16 | 4 |
| 887 | nuclear magnetic resonance spectroscopy | 45 | 1.1K | 64 | 86 |
| 888 | Surface properties | 16 | 1.1K | 338 | 197 |
| 889 | Personality Assessment | 39 | 1.1K | 64 | 128 |
| 890 | Solar Energy | 25 | 1.1K | 437 | 425 |
| 890 | Surface-Active Agents | 15 | 1.1K | 329 | 176 |
| 892 | Zeolites | 38 | 1.1K | 90 | 162 |
| 893 | Cognitive Therapy | 30 | 1.0K | 90 | 78 |
| 894 | child mental health | 64 | 1.0K | 13 | 33 |
| 895 | Developed countries | 24 | 1.0K | 18 | 25 |
| 896 | Recycling | 18 | 1.0K | 128 | 157 |
| 897 | History | 140 | 1.0K | 70 | 32 |
| 897 | Physical Geography | 52 | 1.0K | 14 | 43 |
| 899 | Capital market | 9 | 1.0K | 165 | 38 |
| 900 | Electromagnetic compatibility | 31 | 1.0K | 49 | 32 |
| 901 | Random graphs | 31 | 1.0K | 20 | 18 |
| 902 | mental health policy | 31 | 1.0K | 29 | 31 |
| 903 | Body language | 8 | 1.0K | 30 | 9 |
| 904 | Advertising | 17 | 1.0K | 58 | 46 |
| 904 | synthesis | 45 | 1.0K | 80 | 38 |
| 906 | soil pollution | 12 | 1.0K | 122 | 22 |
| 907 | Atomic spectroscopy | 43 | 1.0K | 147 | 170 |
| 908 | Cellular senescence | 9 | 1.0K | 59 | 54 |
| 909 | national security | 25 | 1.0K | 22 | 4 |
| 910 | Nanoelectronics | 35 | 995 | 142 | 71 |
| 910 | Microwave devices | 45 | 995 | 53 | 63 |
| 912 | Regional Economics | 36 | 992 | 20 | 33 |
| 913 | Structural optimization | 14 | 988 | 111 | 58 |
| 914 | concrete | 11 | 987 | 444 | 302 |
| 915 | environmental indicators | 23 | 983 | 223 | 201 |
| 915 | eye | 12 | 983 | 47 | 110 |
| 915 | primary prevention | 34 | 983 | 36 | 30 |
| 918 | Pediatric Dermatology | 59 | 976 | 29 | 36 |
| 919 | Energy Storage | 30 | 974 | 282 | 322 |
| 920 | Applied Linguistics | 34 | 973 | 57 | 55 |
| 921 | Wetland conservation | 31 | 971 | 25 | 24 |
| 921 | Wetlands | 31 | 971 | 25 | 24 |
| 923 | industrial relations | 51 | 970 | 92 | 107 |
| 924 | health services accessibility | 54 | 960 | 87 | 144 |
| 925 | Sonochemistry | 20 | 956 | 93 | 103 |
| 926 | Hospitals | 115 | 954 | 23 | 65 |
| 926 | Human biology | 41 | 954 | 60 | 60 |
| 928 | Informatics | 41 | 949 | 58 | 147 |
| 929 | Consumer Protection | 40 | 948 | 3 | 16 |
| 929 | Autoimmunity | 16 | 948 | 243 | 210 |
| 931 | Carbohydrate | 16 | 946 | 1 | 8 |
| 932 | Social Networks | 25 | 943 | 28 | 46 |
| 933 | Architecture | 33 | 941 | 56 | 29 |
| 933 | construction | 30 | 941 | 13 | 17 |
| 935 | Biosensors | 24 | 940 | 340 | 475 |
| 935 | drug control | 35 | 940 | 44 | 46 |
| 937 | Urban Geography | 42 | 937 | 9 | 15 |
| 938 | Organometallic compounds | 30 | 935 | 268 | 243 |
| 939 | Structuralism | 23 | 931 | 20 | 44 |
| 939 | Bacteria | 23 | 931 | 42 | 80 |
| 941 | Second Language Acquisition | 11 | 930 | 37 | 27 |
| 942 | Soil Mechanics | 37 | 928 | 251 | 294 |
| 942 | Fisheries Law | 24 | 928 | 19 | 21 |
| 942 | fisheries management | 24 | 928 | 19 | 21 |
| 945 | Wildlife management | 42 | 924 | 78 | 69 |
| 946 | Appetite | 19 | 922 | 157 | 137 |
| 947 | Cytokine | 24 | 914 | 34 | 82 |
| 948 | Pancreatic diseases | 58 | 913 | 15 | 40 |
| 949 | Sites | 30 | 912 | 90 | 134 |
| 950 | Simulation | 1 | 909 | 4 | 1 |
| 950 | theoretical models | 1 | 909 | 4 | 1 |
| 950 | eugenics | 57 | 909 | 30 | 62 |
| 953 | bees | 34 | 906 | 37 | 65 |
| 954 | Lightweight concrete | 8 | 904 | 210 | 139 |
| 954 | family violence | 44 | 904 | 14 | 58 |
| 956 | Suicide | 61 | 899 | 23 | 84 |
| 956 | Leisure | 29 | 899 | 36 | 47 |
| 958 | drug abuse | 48 | 893 | 68 | 95 |
| 959 | Humanities | 52 | 892 | 92 | 80 |
| 960 | individual differences | 25 | 888 | 21 | 34 |
| 961 | race relations | 27 | 885 | 91 | 60 |
| 962 | Process Control | 18 | 880 | 244 | 292 |
| 963 | Nuclear Medicine | 25 | 876 | 296 | 280 |
| 964 | Plant Morphology | 29 | 871 | 50 | 50 |
| 965 | Precision medicine | 16 | 870 | 42 | 8 |
| 966 | Comparative Advertising | 10 | 868 | 19 | 10 |
| 967 | Physical organic chemistry | 45 | 866 | 179 | 254 |
| 968 | Pediatric Rheumatology | 38 | 860 | 8 | 7 |
| 969 | microwave communication systems | 27 | 856 | 58 | 61 |
| 970 | freshwater biology | 22 | 855 | 201 | 180 |
| 971 | Retina | 9 | 854 | 60 | 119 |
| 972 | libraries | 76 | 851 | 11 | 36 |
| 973 | Catalysts | 17 | 849 | 162 | 101 |
| 974 | labor | 21 | 846 | 30 | 48 |
| 975 | Geodynamics | 45 | 845 | 135 | 281 |
| 976 | Topology | 46 | 844 | 13 | 12 |
| 977 | Respiratory system | 45 | 840 | 45 | 116 |
| 978 | Agricultural Engineering | 33 | 836 | 45 | 60 |
| 978 | Food Security | 6 | 836 | 75 | 15 |
| 980 | industrial hygiene | 34 | 835 | 128 | 55 |
| 980 | women | 61 | 835 | 23 | 43 |
| 982 | intergroup relations | 22 | 834 | 15 | 27 |
| 982 | disease vectors | 30 | 834 | 156 | 181 |
| 984 | Industrial Design | 4 | 829 | 211 | 17 |
| 984 | Mechanics | 30 | 829 | 243 | 182 |
| 986 | Cell communication | 17 | 826 | 98 | 88 |
| 987 | Microeconomics | 22 | 825 | 56 | 67 |
| 988 | Rock Mechanics | 21 | 820 | 285 | 256 |
| 989 | Hospitality industry | 21 | 816 | 42 | 29 |
| 990 | working class | 13 | 814 | 38 | 52 |
| 991 | Culture | 78 | 813 | 65 | 121 |
| 992 | psychophysics | 54 | 812 | 8 | 26 |
| 993 | Bioelectronics | 18 | 810 | 351 | 461 |
| 993 | heredity | 40 | 810 | 61 | 100 |
| 995 | Telecommunications | 35 | 809 | 39 | 45 |
| 996 | Multicultural Education | 25 | 808 | 30 | 21 |
| 997 | breastfeeding | 37 | 807 | 33 | 49 |
| 997 | design | 19 | 807 | 45 | 29 |
| 999 | Regionalism | 28 | 803 | 5 | 5 |
| 1000 | Water quality management | 43 | 793 | 258 | 357 |