| 1 | Science | 3,490 | 284.3K | 56 | 79 |
| 2 | Physics | 3,603 | 268.2K | 78 | 101 |
| 3 | Biology | 4,444 | 247.3K | 30 | 93 |
| 4 | Ecology | 3,312 | 233.2K | 4 | 8 |
| 5 | Chemistry | 2,849 | 188.9K | 94 | 79 |
| 6 | Medicine | 3,454 | 166.8K | 59 | 77 |
| 7 | Pollution | 1,716 | 130.4K | 7 | 6 |
| 8 | Molecular Biology | 1,970 | 126.2K | 83 | 93 |
| 9 | Astrophysics | 1,566 | 122.2K | 81 | 84 |
| 10 | Biochemistry | 2,995 | 120.2K | 75 | 109 |
| 11 | Environment | 1,499 | 112.4K | 11 | 13 |
| 12 | Spectrum analysis | 1,724 | 108.5K | 31 | 39 |
| 13 | Neurology | 2,231 | 105.7K | 57 | 87 |
| 14 | Botany | 1,819 | 105.1K | 6 | 9 |
| 15 | Research | 2,664 | 103.8K | 41 | 46 |
| 16 | Microbiology | 1,660 | 99.5K | 45 | 64 |
| 17 | Natural history | 650 | 87.6K | 65 | 138 |
| 18 | United States | 3,468 | 82.7K | 12 | 24 |
| 19 | environmental pollution | 1,265 | 77.1K | 5 | 2 |
| 20 | Psychology | 1,443 | 71.0K | 28 | 45 |
| 21 | Biotechnology | 669 | 66.9K | 106 | 49 |
| 22 | Nuclear Physics | 1,553 | 64.7K | 120 | 116 |
| 23 | Astronomy | 1,025 | 59.7K | 124 | 134 |
| 24 | Materials | 1,021 | 58.7K | 142 | 128 |
| 25 | Environmental Engineering | 910 | 57.6K | 9 | 11 |
| 26 | Virology | 721 | 56.5K | 43 | 76 |
| 27 | Cell Biology | 590 | 54.7K | 113 | 113 |
| 28 | Physiology | 1,146 | 53.8K | 39 | 43 |
| 29 | Environmental Health | 817 | 53.6K | 45 | 43 |
| 30 | Psychiatry | 717 | 53.6K | 83 | 63 |
| 31 | Genetics | 788 | 52.2K | 55 | 78 |
| 32 | Psychophysiology | 1,020 | 51.9K | 22 | 32 |
| 33 | Entomology | 2,423 | 51.5K | 1 | 1 |
| 34 | Bioengineering | 374 | 50.2K | 114 | 47 |
| 35 | Cytology | 512 | 46.3K | 173 | 142 |
| 36 | Condensed Matter | 1,156 | 45.6K | 61 | 76 |
| 37 | Plant diseases | 1,341 | 44.4K | 2 | 3 |
| 38 | Biochemical Engineering | 171 | 43.8K | 230 | 33 |
| 39 | Biophysics | 1,315 | 43.8K | 55 | 77 |
| 40 | Solid State Physics | 1,212 | 43.6K | 62 | 74 |
| 41 | Pharmacology | 1,195 | 42.4K | 53 | 58 |
| 42 | Quantum Gravity | 796 | 41.8K | 42 | 43 |
| 43 | Materials Science | 1,186 | 40.6K | 48 | 98 |
| 44 | biological evolution | 468 | 39.4K | 18 | 27 |
| 45 | Nanotechnology | 592 | 37.4K | 156 | 151 |
| 46 | Neurophysiology | 781 | 37.3K | 41 | 78 |
| 47 | Human genetics | 142 | 35.8K | 190 | 152 |
| 48 | Microbial Ecology | 492 | 34.2K | 10 | 29 |
| 49 | Plants | 491 | 34.1K | 6 | 12 |
| 50 | Nutrition | 509 | 32.6K | 63 | 32 |
| 51 | Behavior | 809 | 32.5K | 28 | 55 |
| 52 | Aging | 741 | 31.8K | 17 | 18 |
| 53 | Endocrinology | 596 | 31.5K | 74 | 99 |
| 54 | Signal Processing | 401 | 31.3K | 64 | 37 |
| 55 | Evolution | 317 | 29.5K | 30 | 25 |
| 56 | Public Health | 636 | 29.4K | 139 | 130 |
| 57 | Electronics | 888 | 29.2K | 28 | 34 |
| 58 | Plant cells | 250 | 29.1K | 25 | 33 |
| 59 | Analytical Chemistry | 631 | 29.1K | 64 | 49 |
| 60 | plant molecular biology | 343 | 28.9K | 18 | 21 |
| 61 | Toxicology | 673 | 28.6K | 39 | 33 |
| 62 | Soil Science | 790 | 28.4K | 1 | 11 |
| 63 | Polymers | 579 | 27.1K | 161 | 107 |
| 64 | Plant physiology | 438 | 26.3K | 12 | 22 |
| 65 | Biodiversity conservation | 248 | 26.1K | 23 | 23 |
| 66 | Liver diseases | 135 | 26.1K | 89 | 24 |
| 67 | Environmental monitoring | 408 | 25.9K | 26 | 14 |
| 68 | Immunology | 539 | 25.7K | 99 | 135 |
| 69 | Geriatrics | 676 | 25.7K | 33 | 37 |
| 70 | Brain | 591 | 25.6K | 38 | 54 |
| 71 | Social behavior | 381 | 25.2K | 3 | 3 |
| 72 | Biocompatible Materials | 388 | 25.0K | 141 | 122 |
| 73 | Pediatrics | 478 | 24.8K | 60 | 66 |
| 74 | Statistics | 879 | 24.4K | 10 | 41 |
| 75 | Biomedical Engineering | 542 | 23.9K | 92 | 72 |
| 76 | drug therapy | 627 | 23.9K | 8 | 12 |
| 77 | Reproduction | 528 | 23.2K | 15 | 12 |
| 78 | Chemical Engineering | 385 | 22.6K | 244 | 167 |
| 79 | marketing | 243 | 22.5K | 14 | 33 |
| 80 | Geology | 454 | 22.4K | 98 | 90 |
| 81 | management | 361 | 22.4K | 60 | 120 |
| 82 | Education | 763 | 22.3K | 33 | 33 |
| 83 | Colloids | 405 | 22.3K | 129 | 67 |
| 84 | pain | 365 | 22.2K | 13 | 17 |
| 85 | Social Psychology | 404 | 22.2K | 48 | 70 |
| 86 | Genomics | 614 | 22.1K | 11 | 27 |
| 87 | Electrochemistry | 979 | 22.1K | 38 | 49 |
| 88 | Climate change | 138 | 22.1K | 24 | 19 |
| 89 | Eutrophication | 137 | 22.1K | 24 | 19 |
| 90 | sanitation | 187 | 21.8K | 67 | 39 |
| 91 | Geography | 561 | 21.7K | 12 | 18 |
| 92 | Surface Chemistry | 421 | 21.7K | 109 | 68 |
| 93 | Hematology | 589 | 21.4K | 76 | 112 |
| 94 | Geophysics | 468 | 21.3K | 193 | 154 |
| 95 | Molecular Genetics | 307 | 21.3K | 15 | 17 |
| 96 | behavior modification | 343 | 20.8K | 2 | 3 |
| 97 | human behavior | 387 | 20.5K | 43 | 65 |
| 98 | Agricultural Ecology | 372 | 20.5K | 1 | 3 |
| 99 | Pharmaceutical Chemistry | 569 | 20.4K | 42 | 62 |
| 100 | Diet | 199 | 20.3K | 73 | 27 |
| 101 | Metabolism | 346 | 20.3K | 105 | 119 |
| 102 | environmental protection | 324 | 20.2K | 21 | 10 |
| 103 | polymerization | 433 | 19.8K | 168 | 111 |
| 104 | Vocational guidance | 377 | 19.8K | 4 | 3 |
| 105 | Medical Physics | 564 | 19.4K | 18 | 22 |
| 106 | Insects | 962 | 19.2K | 1 | 3 |
| 107 | Physical Therapy | 326 | 18.8K | 14 | 10 |
| 108 | Medical genetics | 235 | 18.7K | 167 | 132 |
| 109 | Agronomy | 532 | 18.7K | 4 | 4 |
| 110 | Economics | 448 | 18.6K | 130 | 103 |
| 111 | Diabetes | 315 | 18.6K | 45 | 59 |
| 112 | Artificial Intelligence | 242 | 18.4K | 132 | 84 |
| 113 | Organic Chemistry | 516 | 18.0K | 22 | 33 |
| 114 | Diabetes mellitus | 293 | 17.5K | 37 | 57 |
| 115 | Statistical physics | 475 | 17.5K | 144 | 109 |
| 116 | Mathematics | 1,069 | 17.4K | 90 | 87 |
| 117 | viruses | 276 | 17.2K | 43 | 49 |
| 118 | Developmental Biology | 284 | 17.1K | 81 | 92 |
| 119 | Animal Behavior | 394 | 16.8K | 33 | 50 |
| 120 | soil microbiology | 272 | 16.5K | 17 | 28 |
| 121 | Neuropsychology | 438 | 16.4K | 16 | 30 |
| 122 | Neurobiology | 345 | 16.4K | 33 | 67 |
| 123 | rehabilitation | 339 | 16.2K | 29 | 24 |
| 124 | Metabolic diseases | 259 | 16.1K | 105 | 117 |
| 125 | Therapeutics | 274 | 16.1K | 25 | 20 |
| 126 | Conservation Biology | 246 | 16.0K | 5 | 5 |
| 127 | Environmental Chemistry | 252 | 15.9K | 17 | 37 |
| 128 | Agriculture | 527 | 15.6K | 15 | 17 |
| 129 | Tourism | 218 | 15.4K | 27 | 22 |
| 130 | Zoology | 425 | 14.9K | 16 | 10 |
| 131 | Sports Medicine | 370 | 14.8K | 36 | 44 |
| 132 | Cardiovascular system | 261 | 14.6K | 57 | 101 |
| 133 | Immunity | 192 | 14.6K | 93 | 143 |
| 134 | Environmental Policy | 267 | 14.4K | 51 | 80 |
| 135 | Water pollution | 318 | 14.4K | 35 | 58 |
| 136 | Biodiversity | 273 | 14.4K | 11 | 26 |
| 137 | Medical Microbiology | 234 | 14.2K | 68 | 68 |
| 138 | Medical Oncology | 255 | 14.1K | 58 | 43 |
| 139 | Wildlife conservation | 238 | 14.1K | 7 | 10 |
| 140 | Plant Ecology | 240 | 14.1K | 17 | 18 |
| 141 | Respiration | 334 | 14.0K | 14 | 25 |
| 142 | counseling | 467 | 14.0K | 1 | 1 |
| 143 | gene therapy | 198 | 13.9K | 14 | 7 |
| 144 | Biomass Energy | 154 | 13.8K | 82 | 51 |
| 145 | Glass | 173 | 13.8K | 36 | 12 |
| 146 | Hypertension | 215 | 13.8K | 87 | 97 |
| 147 | Agricultural Chemistry | 448 | 13.7K | 18 | 31 |
| 148 | Ceramics | 192 | 13.6K | 39 | 14 |
| 149 | pottery | 171 | 13.6K | 35 | 13 |
| 150 | Genetic therapy | 191 | 13.5K | 17 | 10 |
| 151 | behavior therapy | 174 | 13.5K | 17 | 4 |
| 152 | Marine Biology | 371 | 13.3K | 45 | 57 |
| 153 | Child | 376 | 13.3K | 45 | 42 |
| 154 | Gerontology | 516 | 13.3K | 20 | 16 |
| 155 | Child psychology | 233 | 13.3K | 66 | 76 |
| 156 | Radiobiology | 230 | 13.2K | 41 | 33 |
| 157 | Wireless Communication Systems | 279 | 13.2K | 68 | 52 |
| 158 | nucleic acids | 143 | 13.1K | 102 | 103 |
| 159 | Operations Research | 337 | 13.1K | 23 | 33 |
| 160 | Ethology | 280 | 12.9K | 32 | 59 |
| 161 | genome | 164 | 12.9K | 42 | 65 |
| 162 | Clinical Chemistry | 345 | 12.9K | 49 | 60 |
| 163 | Molecular ecology | 130 | 12.8K | 26 | 25 |
| 164 | Population Genetics | 162 | 12.7K | 25 | 27 |
| 165 | Breeding | 296 | 12.6K | 10 | 17 |
| 166 | Transportation | 407 | 12.5K | 26 | 33 |
| 167 | Molecular evolution | 234 | 12.5K | 12 | 41 |
| 168 | Surgery | 133 | 12.4K | 122 | 115 |
| 169 | personality | 214 | 12.3K | 44 | 68 |
| 170 | Pharmacy | 621 | 12.3K | 10 | 28 |
| 171 | Nervous system | 298 | 12.2K | 65 | 116 |
| 172 | Water | 256 | 12.1K | 66 | 107 |
| 173 | Fisheries | 332 | 11.9K | 18 | 15 |
| 174 | Telecommunication | 259 | 11.9K | 105 | 118 |
| 175 | Forest Management | 360 | 11.9K | 8 | 12 |
| 176 | Catalysis | 309 | 11.9K | 235 | 283 |
| 177 | Communication | 343 | 11.7K | 27 | 35 |
| 178 | Microelectronics | 216 | 11.6K | 61 | 86 |
| 179 | Obesity | 281 | 11.6K | 44 | 62 |
| 180 | Environmental pollutants | 186 | 11.5K | 28 | 7 |
| 181 | Automation | 205 | 11.5K | 98 | 105 |
| 182 | proteins | 150 | 11.3K | 85 | 41 |
| 183 | Forest Ecology | 271 | 11.3K | 11 | 13 |
| 184 | miniaturization | 114 | 11.1K | 130 | 100 |
| 185 | Special Education | 328 | 11.1K | 5 | 7 |
| 186 | Mycology | 307 | 11.1K | 9 | 17 |
| 187 | Computational Biology | 303 | 11.0K | 36 | 102 |
| 188 | Food | 193 | 11.0K | 107 | 64 |
| 189 | Child Development | 186 | 11.0K | 103 | 86 |
| 190 | Neurochemistry | 290 | 10.9K | 72 | 110 |
| 191 | pollutants | 153 | 10.9K | 33 | 8 |
| 192 | gene mapping | 225 | 10.9K | 38 | 65 |
| 193 | nanoscience | 136 | 10.8K | 243 | 174 |
| 194 | Semiconductors | 491 | 10.7K | 4 | 2 |
| 195 | Environmental Management | 257 | 10.6K | 32 | 51 |
| 196 | Urology | 278 | 10.5K | 63 | 55 |
| 197 | Transplantation | 175 | 10.5K | 56 | 49 |
| 198 | Cancer | 237 | 10.5K | 217 | 257 |
| 199 | Sociology | 271 | 10.4K | 106 | 120 |
| 200 | Epidemiology | 252 | 10.3K | 175 | 173 |
| 201 | Bioorganic chemistry | 247 | 10.3K | 57 | 64 |
| 202 | Pathology | 212 | 10.3K | 110 | 115 |
| 203 | Psychopharmacology | 144 | 10.1K | 87 | 79 |
| 204 | Environmental Toxicology | 237 | 10.1K | 20 | 41 |
| 205 | Engineering | 406 | 10.0K | 66 | 72 |
| 206 | Cognition | 210 | 10.0K | 79 | 85 |
| 207 | Speech Disorders | 266 | 9.9K | 21 | 20 |
| 208 | Mental Disorders | 215 | 9.7K | 152 | 188 |
| 209 | Image Processing | 173 | 9.6K | 101 | 94 |
| 210 | Oceanography | 239 | 9.6K | 80 | 96 |
| 211 | Ophthalmology | 249 | 9.5K | 80 | 81 |
| 212 | Health Education | 411 | 9.5K | 19 | 32 |
| 213 | Neurons | 39 | 9.5K | 107 | 93 |
| 214 | Chromosome mapping | 200 | 9.4K | 30 | 46 |
| 215 | Meteorology | 177 | 9.3K | 163 | 157 |
| 216 | Hydrology | 305 | 9.3K | 44 | 85 |
| 217 | Memory | 310 | 9.2K | 48 | 76 |
| 218 | Host-parasite interactions | 160 | 9.2K | 30 | 67 |
| 219 | Soil biology | 128 | 9.0K | 33 | 36 |
| 220 | Planets | 175 | 8.8K | 135 | 129 |
| 221 | Speech | 220 | 8.7K | 20 | 18 |
| 222 | Earth Sciences | 211 | 8.7K | 144 | 171 |
| 223 | Electrical Engineering | 756 | 8.6K | 20 | 56 |
| 224 | Health | 261 | 8.5K | 49 | 66 |
| 225 | Ecosystem management | 81 | 8.5K | 10 | 6 |
| 226 | Optics | 671 | 8.5K | 126 | 229 |
| 227 | Educational Psychology | 246 | 8.5K | 17 | 46 |
| 228 | Technology | 248 | 8.5K | 163 | 143 |
| 229 | arthritis | 102 | 8.4K | 94 | 66 |
| 230 | Bioinformatics | 246 | 8.4K | 33 | 116 |
| 231 | Developmental Disabilities | 90 | 8.3K | 71 | 35 |
| 232 | protein | 53 | 8.2K | 132 | 39 |
| 233 | Biometrics | 261 | 8.1K | 12 | 37 |
| 234 | Counseling Psychology | 108 | 8.1K | 2 | 1 |
| 235 | Metallurgy | 244 | 8.0K | 96 | 115 |
| 236 | Physical Chemistry | 199 | 8.0K | 90 | 106 |
| 237 | Animal ecology | 205 | 7.9K | 14 | 29 |
| 238 | Obstetrics | 219 | 7.9K | 120 | 115 |
| 239 | Critical Care | 118 | 7.9K | 117 | 135 |
| 240 | Critical Care Medicine | 114 | 7.9K | 122 | 135 |
| 241 | ecosystem | 164 | 7.9K | 9 | 28 |
| 242 | Sleep Disorders | 148 | 7.8K | 59 | 49 |
| 243 | Bacteriology | 153 | 7.8K | 113 | 146 |
| 244 | Virulence | 115 | 7.7K | 41 | 68 |
| 245 | Oncology | 105 | 7.7K | 177 | 230 |
| 246 | Chemotherapy | 269 | 7.7K | 5 | 14 |
| 247 | Environmental Microbiology | 111 | 7.7K | 29 | 38 |
| 248 | Teaching | 194 | 7.6K | 32 | 30 |
| 249 | Mathematical Physics | 214 | 7.5K | 194 | 177 |
| 250 | Biogeography | 124 | 7.5K | 9 | 21 |
| 251 | Leukemia | 80 | 7.5K | 90 | 67 |
| 252 | finance | 148 | 7.4K | 93 | 61 |
| 253 | Birds | 364 | 7.4K | 7 | 16 |
| 254 | Nonlinear Dynamics | 141 | 7.4K | 184 | 100 |
| 255 | Atmospheric Physics | 125 | 7.3K | 158 | 133 |
| 256 | Social Sciences | 316 | 7.3K | 74 | 117 |
| 257 | Nanostructured Materials | 200 | 7.3K | 204 | 238 |
| 258 | Sports | 174 | 7.3K | 83 | 57 |
| 259 | Phylogeny | 152 | 7.2K | 5 | 7 |
| 260 | Sleep | 137 | 7.2K | 68 | 59 |
| 261 | plant communities | 113 | 7.2K | 28 | 38 |
| 262 | Metals | 204 | 7.1K | 96 | 128 |
| 263 | Decision making | 174 | 7.0K | 22 | 40 |
| 264 | Anatomy | 178 | 7.0K | 96 | 127 |
| 265 | Parasitology | 300 | 7.0K | 23 | 48 |
| 266 | alcoholism | 274 | 7.0K | 40 | 59 |
| 267 | behavioral medicine | 219 | 6.8K | 19 | 67 |
| 268 | Genetic engineering | 138 | 6.8K | 75 | 75 |
| 269 | computer networks | 218 | 6.8K | 62 | 75 |
| 270 | plant viruses | 147 | 6.8K | 2 | 2 |
| 271 | Invertebrates | 230 | 6.7K | 2 | 2 |
| 272 | Adolescent | 266 | 6.6K | 58 | 75 |
| 273 | Tribology | 129 | 6.5K | 42 | 21 |
| 274 | Archaeology | 199 | 6.5K | 34 | 31 |
| 275 | Composite Materials | 164 | 6.5K | 197 | 226 |
| 276 | Civil Engineering | 255 | 6.4K | 20 | 12 |
| 277 | Microwaves | 103 | 6.4K | 130 | 34 |
| 278 | Agricultural systems | 121 | 6.4K | 2 | 2 |
| 279 | Organizational Behavior | 65 | 6.4K | 25 | 26 |
| 280 | Light | 44 | 6.4K | 109 | 71 |
| 281 | Medical Laboratory Science | 160 | 6.4K | 66 | 114 |
| 282 | Cognitive neuroscience | 88 | 6.3K | 87 | 92 |
| 283 | Biogeochemistry | 91 | 6.3K | 72 | 65 |
| 284 | food technology | 177 | 6.1K | 114 | 113 |
| 285 | Business | 95 | 6.1K | 141 | 182 |
| 286 | Photonics | 74 | 6.0K | 276 | 160 |
| 287 | Atomic spectroscopy | 178 | 6.0K | 5 | 9 |
| 288 | Research Design | 140 | 6.0K | 37 | 61 |
| 289 | Health promotion | 208 | 5.9K | 33 | 53 |
| 290 | mass transfer | 164 | 5.9K | 62 | 74 |
| 291 | Hearing | 140 | 5.9K | 24 | 15 |
| 292 | Geochemistry | 130 | 5.9K | 224 | 227 |
| 293 | Plant tissue culture | 181 | 5.7K | 1 | 2 |
| 294 | older people | 409 | 5.7K | 28 | 32 |
| 295 | Biomechanics | 128 | 5.7K | 61 | 69 |
| 296 | Plant cell culture | 142 | 5.6K | 1 | 2 |
| 297 | Anthropology | 344 | 5.6K | 28 | 52 |
| 298 | Animal breeding | 120 | 5.6K | 29 | 12 |
| 299 | Perception | 281 | 5.5K | 58 | 126 |
| 300 | Production Management | 111 | 5.5K | 39 | 71 |
| 301 | Fluid Mechanics | 118 | 5.5K | 81 | 54 |
| 302 | Embryology | 116 | 5.5K | 132 | 170 |
| 303 | Building | 121 | 5.4K | 13 | 6 |
| 304 | Chemical Ecology | 120 | 5.4K | 11 | 10 |
| 305 | Quality Control | 178 | 5.4K | 9 | 22 |
| 306 | free radicals | 68 | 5.4K | 105 | 79 |
| 307 | Cytogenetics | 83 | 5.4K | 122 | 148 |
| 308 | Language Disorders | 134 | 5.3K | 37 | 26 |
| 309 | Paleoclimatology | 107 | 5.3K | 39 | 39 |
| 310 | Optical materials | 68 | 5.3K | 426 | 253 |
| 311 | Attention | 263 | 5.3K | 47 | 99 |
| 312 | Ornithology | 268 | 5.3K | 2 | 10 |
| 313 | Computer Graphics | 169 | 5.2K | 73 | 93 |
| 314 | Substance Abuse | 225 | 5.2K | 44 | 63 |
| 315 | Learning disabilities | 157 | 5.2K | 11 | 12 |
| 316 | Parasitic Diseases | 218 | 5.2K | 24 | 73 |
| 317 | China | 150 | 5.2K | 163 | 94 |
| 318 | Structural optimization | 66 | 5.2K | 15 | 8 |
| 318 | Cell differentiation | 102 | 5.2K | 157 | 230 |
| 320 | Clinical Psychology | 170 | 5.2K | 53 | 119 |
| 321 | Mental illness | 96 | 5.2K | 175 | 195 |
| 322 | Hemodynamics | 78 | 5.2K | 45 | 40 |
| 323 | Public Relations | 100 | 5.1K | 1 | 1 |
| 324 | Molecular Microbiology | 63 | 5.1K | 83 | 89 |
| 325 | Plant genetic engineering | 116 | 5.1K | 22 | 32 |
| 326 | pheromones | 108 | 5.0K | 11 | 10 |
| 327 | Visual Perception | 251 | 5.0K | 48 | 96 |
| 328 | Ecological Engineering | 109 | 5.0K | 3 | 3 |
| 329 | Solar Energy | 122 | 4.9K | 35 | 47 |
| 330 | Schizophrenia | 24 | 4.9K | 267 | 77 |
| 331 | health behavior | 166 | 4.9K | 36 | 44 |
| 332 | Orthopedics | 143 | 4.8K | 69 | 67 |
| 333 | Mobile Computing | 111 | 4.8K | 29 | 27 |
| 334 | Paleoecology | 98 | 4.8K | 39 | 32 |
| 335 | Atmospheric Chemistry | 25 | 4.7K | 283 | 136 |
| 336 | Hydraulic Engineering | 191 | 4.7K | 25 | 35 |
| 337 | Political Science | 192 | 4.7K | 86 | 108 |
| 338 | Criminology | 121 | 4.7K | 46 | 36 |
| 339 | Paleogeography | 96 | 4.7K | 27 | 25 |
| 340 | Computer Vision | 61 | 4.7K | 103 | 94 |
| 341 | Solid State Chemistry | 188 | 4.6K | 112 | 100 |
| 342 | Developing countries | 116 | 4.6K | 123 | 105 |
| 343 | Fungi | 75 | 4.6K | 76 | 43 |
| 344 | Cerebral cortex | 69 | 4.6K | 81 | 69 |
| 345 | Adolescent Psychology | 65 | 4.6K | 61 | 22 |
| 346 | Primates | 85 | 4.5K | 30 | 19 |
| 347 | Industrial Microbiology | 91 | 4.5K | 89 | 104 |
| 348 | Psycholinguistics | 107 | 4.5K | 59 | 73 |
| 349 | Soil ecology | 96 | 4.5K | 11 | 17 |
| 350 | Audiology | 96 | 4.5K | 46 | 36 |
| 351 | violence | 83 | 4.4K | 47 | 33 |
| 352 | Plant Biotechnology | 96 | 4.4K | 21 | 13 |
| 353 | Radiography | 69 | 4.4K | 75 | 75 |
| 354 | mammals | 193 | 4.4K | 8 | 13 |
| 355 | Histology | 89 | 4.4K | 175 | 135 |
| 355 | Nanostructures | 46 | 4.4K | 255 | 155 |
| 357 | Radio | 93 | 4.4K | 153 | 156 |
| 358 | Health Policy | 129 | 4.4K | 150 | 132 |
| 359 | disease vectors | 97 | 4.4K | 26 | 17 |
| 360 | Sustainable Development | 84 | 4.3K | 69 | 90 |
| 361 | Biogeochemical cycles | 18 | 4.3K | 106 | 37 |
| 362 | Chronic diseases | 34 | 4.3K | 121 | 80 |
| 363 | Economic Development | 83 | 4.3K | 108 | 110 |
| 364 | Microbial Genetics | 80 | 4.3K | 5 | 7 |
| 365 | drugs | 166 | 4.2K | 67 | 102 |
| 366 | Data Mining | 76 | 4.2K | 58 | 81 |
| 367 | Informatics | 42 | 4.2K | 51 | 19 |
| 368 | consumer behavior | 52 | 4.2K | 17 | 19 |
| 369 | School Psychology | 138 | 4.2K | 12 | 20 |
| 369 | phytopathogenic bacteria | 72 | 4.2K | 5 | 8 |
| 371 | energy conservation | 62 | 4.1K | 245 | 228 |
| 372 | Paleontology | 163 | 4.1K | 46 | 45 |
| 373 | Control Theory | 109 | 4.0K | 142 | 101 |
| 374 | Roads | 271 | 4.0K | 17 | 28 |
| 375 | data collection | 64 | 4.0K | 27 | 51 |
| 376 | Water quality management | 168 | 4.0K | 28 | 39 |
| 377 | Mass Spectrometry | 110 | 4.0K | 33 | 38 |
| 378 | Fishery management | 180 | 4.0K | 5 | 14 |
| 379 | Developmental Psychology | 72 | 4.0K | 103 | 99 |
| 380 | Family | 127 | 3.9K | 37 | 39 |
| 381 | commerce | 59 | 3.9K | 92 | 114 |
| 382 | Plastics | 43 | 3.9K | 250 | 42 |
| 383 | Systems Biology | 115 | 3.9K | 40 | 43 |
| 384 | Nutrition physiology | 42 | 3.9K | 49 | 17 |
| 385 | Learning | 151 | 3.9K | 48 | 134 |
| 386 | United Kingdom | 105 | 3.9K | 109 | 144 |
| 387 | Psychosomatic Medicine | 86 | 3.9K | 36 | 53 |
| 388 | Parasites | 154 | 3.8K | 30 | 55 |
| 389 | Energy Policy | 69 | 3.8K | 325 | 301 |
| 390 | drug development | 46 | 3.8K | 90 | 103 |
| 391 | Horticulture | 260 | 3.8K | 2 | 7 |
| 392 | Magnetic Resonance Spectroscopy | 229 | 3.8K | 9 | 52 |
| 393 | Intellectual disability | 89 | 3.8K | 46 | 34 |
| 394 | Anxiety Disorders | 43 | 3.8K | 53 | 42 |
| 394 | Anxiety | 43 | 3.8K | 53 | 41 |
| 396 | Meteorites | 46 | 3.7K | 207 | 164 |
| 397 | Microorganisms | 56 | 3.7K | 57 | 93 |
| 397 | drug addiction | 157 | 3.7K | 48 | 94 |
| 397 | Disease | 9 | 3.7K | 103 | 100 |
| 400 | Space telescopes | 12 | 3.7K | 50 | 10 |
| 401 | Diagnostic microbiology | 50 | 3.7K | 147 | 162 |
| 402 | Allergy | 44 | 3.7K | 191 | 198 |
| 403 | Adolescent Medicine | 70 | 3.7K | 48 | 59 |
| 404 | Economic History | 145 | 3.7K | 220 | 199 |
| 405 | biological factors | 88 | 3.6K | 86 | 85 |
| 406 | Growth | 63 | 3.6K | 154 | 205 |
| 407 | Neurotransmitters | 71 | 3.6K | 26 | 15 |
| 408 | families | 126 | 3.6K | 23 | 28 |
| 409 | Structural Engineering | 124 | 3.6K | 131 | 134 |
| 410 | Medical Anthropology | 103 | 3.5K | 83 | 140 |
| 411 | diseases | 4 | 3.5K | 232 | 110 |
| 412 | Medical innovations | 43 | 3.5K | 92 | 115 |
| 413 | Green Chemistry | 55 | 3.5K | 252 | 203 |
| 413 | Electromagnetic compatibility | 79 | 3.5K | 8 | 5 |
| 415 | Educational Technology | 136 | 3.5K | 19 | 39 |
| 416 | Emergency Medicine | 215 | 3.5K | 43 | 69 |
| 417 | preventive medicine | 109 | 3.5K | 63 | 113 |
| 418 | Rheumatology | 52 | 3.5K | 149 | 122 |
| 419 | Food Microbiology | 59 | 3.4K | 96 | 88 |
| 420 | Oncogenes | 52 | 3.4K | 164 | 186 |
| 421 | locomotion | 58 | 3.4K | 22 | 21 |
| 421 | posture | 58 | 3.4K | 22 | 21 |
| 421 | gait | 58 | 3.4K | 22 | 21 |
| 421 | walking | 58 | 3.4K | 22 | 21 |
| 425 | Quantum Chemistry | 80 | 3.4K | 1 | 1 |
| 426 | System analysis | 173 | 3.4K | 60 | 135 |
| 427 | Immunopathology | 88 | 3.4K | 96 | 93 |
| 428 | Drug delivery systems | 105 | 3.4K | 35 | 121 |
| 429 | Hazardous waste | 82 | 3.4K | 9 | 22 |
| 430 | Alzheimer's disease | 250 | 3.4K | 58 | 107 |
| 431 | Hormones | 62 | 3.4K | 135 | 96 |
| 432 | Pharmacognosy | 67 | 3.4K | 189 | 139 |
| 433 | Experimental Design | 92 | 3.4K | 6 | 14 |
| 434 | Criminal psychology | 83 | 3.4K | 46 | 49 |
| 435 | Aquaculture | 178 | 3.4K | 47 | 109 |
| 436 | natural products | 78 | 3.4K | 106 | 81 |
| 437 | Geodynamics | 36 | 3.4K | 190 | 74 |
| 438 | plasticity | 27 | 3.4K | 57 | 25 |
| 439 | Molecular structure | 118 | 3.4K | 120 | 197 |
| 440 | Proteome | 59 | 3.3K | 98 | 84 |
| 441 | Radiation effects | 75 | 3.3K | 3 | 9 |
| 442 | environmental exposure | 62 | 3.3K | 150 | 87 |
| 443 | radioactive waste | 70 | 3.3K | 11 | 24 |
| 444 | Pesticides | 126 | 3.3K | 5 | 4 |
| 445 | Quality of life | 66 | 3.3K | 91 | 90 |
| 446 | biological invasions | 101 | 3.3K | 2 | 5 |
| 447 | Manufacturing Processes | 91 | 3.2K | 237 | 202 |
| 448 | language | 96 | 3.2K | 35 | 47 |
| 449 | enzymes | 98 | 3.2K | 68 | 92 |
| 450 | Wetland ecology | 122 | 3.2K | 3 | 4 |
| 451 | Mental Health | 101 | 3.2K | 105 | 77 |
| 452 | Environmental Law | 39 | 3.2K | 146 | 113 |
| 453 | Numerical Analysis | 106 | 3.2K | 152 | 104 |
| 454 | Signal Transduction | 78 | 3.1K | 86 | 156 |
| 455 | Molecules | 121 | 3.1K | 84 | 121 |
| 456 | Elderly | 307 | 3.1K | 25 | 20 |
| 457 | nuclear magnetic resonance | 192 | 3.1K | 21 | 67 |
| 458 | cell physiology | 77 | 3.1K | 148 | 219 |
| 459 | Aggression | 34 | 3.1K | 34 | 10 |
| 460 | Developmental Genetics | 37 | 3.1K | 84 | 100 |
| 461 | Groundwater | 92 | 3.1K | 13 | 17 |
| 462 | Comparative Physiology | 76 | 3.1K | 53 | 48 |
| 462 | Regional Planning | 104 | 3.1K | 72 | 95 |
| 464 | North America | 136 | 3.1K | 18 | 17 |
| 465 | Bones | 51 | 3.1K | 62 | 69 |
| 466 | industrial waste | 66 | 3.1K | 14 | 26 |
| 467 | bees | 68 | 3.1K | 8 | 6 |
| 468 | health services | 90 | 3.0K | 67 | 54 |
| 469 | Mental Health Services | 94 | 3.0K | 71 | 56 |
| 470 | Clinical Immunology | 78 | 3.0K | 75 | 68 |
| 470 | Malaria | 68 | 3.0K | 44 | 28 |
| 472 | Dietetics | 68 | 3.0K | 45 | 23 |
| 473 | visualization | 208 | 3.0K | 20 | 41 |
| 474 | Combinatorial optimization | 141 | 3.0K | 1 | 1 |
| 475 | Mites | 127 | 3.0K | 3 | 3 |
| 476 | Parallel Processing | 70 | 3.0K | 18 | 21 |
| 477 | irrigation | 100 | 3.0K | 5 | 6 |
| 478 | internet | 89 | 3.0K | 78 | 104 |
| 479 | Neural circuitry | 83 | 3.0K | 125 | 136 |
| 480 | adolescence | 85 | 2.9K | 62 | 84 |
| 481 | Vaccines | 100 | 2.9K | 119 | 139 |
| 482 | Climatology | 106 | 2.9K | 158 | 246 |
| 483 | Mechanical Engineering | 132 | 2.9K | 150 | 130 |
| 484 | world | 71 | 2.9K | 36 | 57 |
| 485 | Energy Conversion | 16 | 2.9K | 477 | 258 |
| 486 | Nanoparticles | 59 | 2.9K | 205 | 172 |
| 486 | fertility | 55 | 2.9K | 131 | 117 |
| 488 | Parenteral nutrition | 75 | 2.9K | 54 | 116 |
| 489 | Lung Transplantation | 62 | 2.9K | 38 | 40 |
| 489 | Heart transplantation | 62 | 2.9K | 38 | 40 |
| 491 | Industrial Engineering | 102 | 2.9K | 118 | 157 |
| 492 | Radiation | 119 | 2.8K | 88 | 109 |
| 493 | crime | 71 | 2.8K | 36 | 31 |
| 494 | phase diagrams | 75 | 2.8K | 9 | 4 |
| 495 | Proteomics | 74 | 2.8K | 37 | 78 |
| 496 | Neurolinguistics | 58 | 2.8K | 17 | 22 |
| 497 | Astrocytes | 22 | 2.8K | 76 | 30 |
| 498 | Information Technology | 83 | 2.8K | 143 | 206 |
| 499 | infection | 72 | 2.8K | 152 | 162 |
| 500 | Landscape Ecology | 63 | 2.8K | 9 | 17 |
| 501 | Stem cells | 79 | 2.8K | 128 | 173 |
| 502 | Agricultural Science | 32 | 2.8K | 28 | 19 |
| 503 | Acarology | 102 | 2.7K | 3 | 3 |
| 503 | Ticks | 102 | 2.7K | 3 | 3 |
| 503 | Acari | 102 | 2.7K | 3 | 3 |
| 506 | Heterocyclic compounds | 116 | 2.7K | 19 | 4 |
| 507 | Autoimmunity | 61 | 2.7K | 43 | 62 |
| 508 | Power Electronics | 70 | 2.7K | 134 | 157 |
| 509 | Recycling | 27 | 2.7K | 69 | 34 |
| 510 | Cognitive Science | 60 | 2.7K | 145 | 199 |
| 511 | Engineering Mathematics | 73 | 2.7K | 168 | 94 |
| 512 | Emotions | 59 | 2.7K | 41 | 61 |
| 513 | Cybernetics | 82 | 2.7K | 117 | 215 |
| 514 | Wetland conservation | 97 | 2.7K | 2 | 2 |
| 514 | Wetlands | 97 | 2.7K | 2 | 2 |
| 516 | Bacteria | 33 | 2.7K | 27 | 22 |
| 517 | Eating Disorders | 50 | 2.6K | 97 | 69 |
| 518 | Information Systems | 167 | 2.6K | 2 | 59 |
| 519 | Genetic regulation | 57 | 2.6K | 97 | 160 |
| 520 | Morphology | 64 | 2.6K | 49 | 25 |
| 521 | Insect biochemistry | 77 | 2.6K | 13 | 21 |
| 522 | Feeding and Eating Disorders | 49 | 2.6K | 94 | 65 |
| 522 | energy resources | 39 | 2.6K | 193 | 208 |
| 524 | International Finance | 40 | 2.6K | 285 | 99 |
| 525 | Biomass | 64 | 2.6K | 8 | 24 |
| 526 | Analytical Biochemistry | 74 | 2.6K | 95 | 114 |
| 526 | Electrophoresis | 79 | 2.6K | 100 | 89 |
| 528 | histological techniques | 38 | 2.6K | 69 | 41 |
| 528 | water supply | 103 | 2.6K | 55 | 130 |
| 530 | Music | 97 | 2.6K | 24 | 14 |
| 531 | Advertising | 71 | 2.6K | 6 | 9 |
| 532 | Quantum electronics | 89 | 2.6K | 153 | 113 |
| 533 | Pediatric Neurology | 30 | 2.6K | 215 | 208 |
| 534 | Diagnostic Imaging | 71 | 2.6K | 215 | 209 |
| 535 | Immune system | 36 | 2.6K | 161 | 240 |
| 536 | Family Therapy | 68 | 2.6K | 46 | 21 |
| 537 | Leisure | 41 | 2.5K | 21 | 14 |
| 538 | Europe | 102 | 2.5K | 328 | 313 |
| 539 | Zoonoses | 32 | 2.5K | 12 | 3 |
| 540 | Scandinavia | 56 | 2.5K | 46 | 30 |
| 541 | freshwater biology | 40 | 2.5K | 88 | 50 |
| 542 | Recombinant DNA | 54 | 2.5K | 139 | 105 |
| 543 | Photochemistry | 51 | 2.5K | 183 | 101 |
| 544 | Otolaryngology | 60 | 2.5K | 62 | 36 |
| 545 | exobiology | 57 | 2.5K | 7 | 15 |
| 546 | Water Microbiology | 21 | 2.5K | 25 | 9 |
| 547 | Ocean Engineering | 128 | 2.5K | 118 | 204 |
| 548 | Muscles | 78 | 2.5K | 41 | 67 |
| 549 | Pharmaceutical Technology | 119 | 2.4K | 31 | 116 |
| 550 | Dermatology | 230 | 2.4K | 71 | 202 |
| 551 | human development | 41 | 2.4K | 107 | 85 |
| 552 | Women's health | 95 | 2.4K | 58 | 64 |
| 553 | Econometrics | 75 | 2.4K | 126 | 167 |
| 554 | actuators | 63 | 2.4K | 289 | 282 |
| 554 | transducers | 63 | 2.4K | 289 | 282 |
| 556 | Photography | 460 | 2.4K | 43 | 30 |
| 557 | Biodegradation | 19 | 2.4K | 87 | 13 |
| 558 | drug abuse | 99 | 2.4K | 24 | 21 |
| 559 | Social Networks | 27 | 2.4K | 22 | 22 |
| 560 | Fluid Dynamics | 68 | 2.4K | 107 | 92 |
| 560 | Personality Assessment | 42 | 2.4K | 52 | 56 |
| 562 | Environmental Geology | 79 | 2.4K | 70 | 106 |
| 563 | voice | 63 | 2.4K | 17 | 11 |
| 564 | Plant breeding | 86 | 2.4K | 25 | 27 |
| 565 | environmental indicators | 71 | 2.4K | 29 | 46 |
| 566 | mathematical analysis | 158 | 2.4K | 138 | 151 |
| 567 | drainage | 89 | 2.4K | 6 | 6 |
| 568 | Structuralism | 21 | 2.4K | 24 | 22 |
| 569 | Human-Computer Interaction | 52 | 2.4K | 118 | 88 |
| 570 | Nursing | 135 | 2.4K | 76 | 97 |
| 571 | Production Engineering | 66 | 2.3K | 242 | 137 |
| 572 | Digestive system diseases | 65 | 2.3K | 79 | 52 |
| 573 | Membranes | 69 | 2.3K | 245 | 336 |
| 574 | Enteral nutrition | 46 | 2.3K | 58 | 106 |
| 575 | Communication in medicine | 75 | 2.3K | 35 | 30 |
| 576 | Urban Economics | 59 | 2.3K | 15 | 28 |
| 577 | Information Science | 113 | 2.3K | 140 | 290 |
| 578 | Population | 66 | 2.3K | 51 | 58 |
| 579 | Nanoelectronics | 136 | 2.3K | 8 | 9 |
| 580 | Cell metabolism | 14 | 2.3K | 192 | 172 |
| 581 | Homeostasis | 13 | 2.3K | 134 | 166 |
| 582 | Auditing | 41 | 2.3K | 5 | 11 |
| 583 | Youth | 65 | 2.3K | 36 | 54 |
| 584 | Environmental Education | 38 | 2.3K | 9 | 6 |
| 585 | medical education | 91 | 2.3K | 183 | 189 |
| 586 | Fouling | 16 | 2.3K | 22 | 9 |
| 587 | calcification | 24 | 2.3K | 82 | 28 |
| 588 | Occupational Therapy | 237 | 2.3K | 15 | 34 |
| 589 | Systems Engineering | 73 | 2.3K | 190 | 183 |
| 590 | Robotics | 71 | 2.3K | 172 | 184 |
| 591 | epilepsy | 58 | 2.3K | 70 | 51 |
| 592 | Medical Technology | 105 | 2.3K | 37 | 91 |
| 593 | Mineralogy | 88 | 2.2K | 154 | 225 |
| 594 | Neurosurgery | 72 | 2.2K | 51 | 93 |
| 595 | Veterinary Immunology | 88 | 2.2K | 16 | 19 |
| 596 | Renewable Energy Sources | 30 | 2.2K | 686 | 643 |
| 597 | hazard mitigation | 59 | 2.2K | 25 | 22 |
| 598 | Genes | 95 | 2.2K | 31 | 55 |
| 599 | Bacterial infections | 39 | 2.2K | 74 | 131 |
| 599 | Tropical Medicine | 97 | 2.2K | 81 | 95 |
| 601 | psychotherapy | 61 | 2.2K | 191 | 229 |
| 602 | Waterways | 84 | 2.2K | 5 | 3 |
| 602 | Harbors | 84 | 2.2K | 5 | 3 |
| 604 | mycoses | 26 | 2.2K | 112 | 123 |
| 605 | school psychologists | 49 | 2.2K | 12 | 19 |
| 606 | Building Materials | 72 | 2.2K | 218 | 323 |
| 607 | Linguistics | 102 | 2.2K | 101 | 134 |
| 608 | Clinical Pharmacology | 77 | 2.2K | 85 | 109 |
| 609 | natural disasters | 63 | 2.1K | 49 | 68 |
| 610 | Computer-Aided Design | 104 | 2.1K | 36 | 90 |
| 611 | Organometallic compounds | 66 | 2.1K | 101 | 108 |
| 612 | Human evolution | 45 | 2.1K | 51 | 54 |
| 613 | Dementia | 216 | 2.1K | 60 | 125 |
| 614 | economic policy | 92 | 2.1K | 186 | 176 |
| 615 | Database Management | 75 | 2.1K | 62 | 91 |
| 616 | Leadership | 65 | 2.1K | 9 | 62 |
| 617 | Solar System | 59 | 2.1K | 118 | 117 |
| 618 | Land use | 79 | 2.1K | 33 | 62 |
| 619 | Smoking | 84 | 2.1K | 58 | 77 |
| 620 | Australia | 89 | 2.1K | 114 | 104 |
| 621 | Infections | 43 | 2.1K | 157 | 158 |
| 622 | Internet of Things | 53 | 2.1K | 124 | 124 |
| 623 | Sustainable Engineering | 46 | 2.1K | 221 | 230 |
| 624 | Food additives | 35 | 2.1K | 153 | 132 |
| 625 | California | 91 | 2.1K | 16 | 23 |
| 626 | Primary health care | 73 | 2.1K | 169 | 168 |
| 627 | Gene expression regulation | 45 | 2.0K | 102 | 141 |
| 628 | Agricultural Engineering | 41 | 2.0K | 30 | 24 |
| 629 | probabilities | 158 | 2.0K | 32 | 64 |
| 630 | Sites | 33 | 2.0K | 80 | 56 |
| 631 | General Surgery | 95 | 2.0K | 49 | 42 |
| 632 | Soil fertility | 33 | 2.0K | 21 | 17 |
| 633 | Paleoceanography | 19 | 2.0K | 44 | 29 |
| 634 | Transgenic plants | 43 | 2.0K | 18 | 19 |
| 635 | Kidney diseases | 45 | 2.0K | 107 | 91 |
| 636 | Demography | 29 | 2.0K | 101 | 61 |
| 637 | Autoimmune diseases | 50 | 2.0K | 33 | 46 |
| 638 | Chemical analysis | 34 | 2.0K | 135 | 52 |
| 639 | Reading | 53 | 2.0K | 52 | 44 |
| 640 | Depression | 18 | 2.0K | 67 | 44 |
| 641 | Capital market | 8 | 2.0K | 178 | 7 |
| 642 | Geotechnical Engineering | 64 | 1.9K | 45 | 62 |
| 643 | Plant Genetics | 48 | 1.9K | 50 | 103 |
| 644 | Geomorphology | 61 | 1.9K | 154 | 227 |
| 645 | Plant Taxonomy | 75 | 1.9K | 8 | 11 |
| 646 | lasers | 78 | 1.9K | 246 | 224 |
| 647 | sustainability | 24 | 1.9K | 139 | 112 |
| 648 | fuel cells | 19 | 1.9K | 424 | 264 |
| 649 | Molecular cloning | 48 | 1.9K | 140 | 135 |
| 650 | food contamination | 62 | 1.9K | 29 | 25 |
| 651 | Lipids | 32 | 1.9K | 232 | 189 |
| 652 | Drug design | 68 | 1.9K | 68 | 130 |
| 653 | Autoantibodies | 48 | 1.9K | 31 | 40 |
| 654 | Animal genetics | 51 | 1.9K | 69 | 56 |
| 655 | Continental shelf | 58 | 1.9K | 18 | 36 |
| 656 | Pharmacogenetics | 64 | 1.9K | 55 | 95 |
| 657 | Genetic recombination | 47 | 1.9K | 135 | 133 |
| 658 | Nuclear Engineering | 219 | 1.9K | 59 | 101 |
| 659 | Alloys | 63 | 1.9K | 7 | 3 |
| 660 | Multiphase Flow | 27 | 1.9K | 45 | 27 |
| 661 | Wildlife management | 88 | 1.8K | 26 | 30 |
| 662 | Public Policy | 77 | 1.8K | 157 | 223 |
| 663 | Estuaries | 29 | 1.8K | 20 | 19 |
| 664 | Health Services Research | 57 | 1.8K | 217 | 203 |
| 665 | Chromatographic analysis | 81 | 1.8K | 121 | 113 |
| 666 | Nephrology | 37 | 1.8K | 84 | 81 |
| 667 | Information Theory | 42 | 1.8K | 239 | 199 |
| 668 | Traffic Engineering | 37 | 1.8K | 27 | 29 |
| 669 | Molecular Pharmacology | 38 | 1.8K | 88 | 92 |
| 670 | Geriatric Psychiatry | 52 | 1.8K | 76 | 79 |
| 671 | Microscopy | 55 | 1.8K | 119 | 112 |
| 672 | feeding behavior | 45 | 1.8K | 73 | 82 |
| 672 | Vision | 34 | 1.8K | 142 | 122 |
| 674 | Functional Genomics | 45 | 1.8K | 6 | 11 |
| 675 | Africa | 107 | 1.8K | 60 | 57 |
| 676 | Asia | 94 | 1.8K | 162 | 161 |
| 677 | Psychometrics | 49 | 1.8K | 48 | 75 |
| 678 | Vocational Education | 106 | 1.8K | 5 | 16 |
| 679 | Food Policy | 34 | 1.8K | 22 | 20 |
| 680 | Soil Mechanics | 74 | 1.7K | 122 | 180 |
| 681 | Geobiology | 56 | 1.7K | 12 | 20 |
| 682 | Waste management | 75 | 1.7K | 56 | 67 |
| 682 | agricultural policy | 32 | 1.7K | 13 | 13 |
| 684 | Chromatography | 73 | 1.7K | 107 | 101 |
| 685 | Restoration Ecology | 76 | 1.7K | 5 | 24 |
| 686 | forest policy | 99 | 1.7K | 12 | 15 |
| 687 | city planning | 109 | 1.7K | 83 | 189 |
| 688 | global environmental change | 42 | 1.7K | 66 | 123 |
| 689 | Microwave devices | 62 | 1.7K | 34 | 37 |
| 690 | organization | 21 | 1.7K | 215 | 208 |
| 691 | deviant behavior | 42 | 1.7K | 8 | 3 |
| 692 | Juvenile delinquency | 40 | 1.7K | 26 | 14 |
| 692 | Pharmacokinetics | 84 | 1.7K | 16 | 65 |
| 694 | Immunotherapy | 42 | 1.7K | 318 | 370 |
| 695 | soil management | 43 | 1.7K | 37 | 55 |
| 696 | forestry | 23 | 1.7K | 36 | 14 |
| 697 | food handling | 58 | 1.7K | 33 | 61 |
| 698 | Industrial Safety | 52 | 1.7K | 92 | 97 |
| 698 | Physical organic chemistry | 71 | 1.7K | 73 | 108 |
| 700 | Mortgages | 34 | 1.7K | 9 | 4 |
| 701 | Algal blooms | 22 | 1.6K | 33 | 29 |
| 701 | Cyanobacteria | 22 | 1.6K | 33 | 29 |
| 701 | Exercise | 63 | 1.6K | 127 | 139 |
| 701 | microalgae | 22 | 1.6K | 33 | 29 |
| 705 | Ceramic materials | 49 | 1.6K | 151 | 130 |
| 706 | Socioeconomic Factors | 40 | 1.6K | 62 | 46 |
| 707 | prostaglandins | 25 | 1.6K | 65 | 14 |
| 708 | Clinical Biochemistry | 41 | 1.6K | 153 | 139 |
| 708 | Antibacterial agents | 52 | 1.6K | 17 | 37 |
| 710 | Neuromuscular diseases | 57 | 1.6K | 44 | 66 |
| 711 | Sales management | 12 | 1.6K | 65 | 54 |
| 711 | selling | 12 | 1.6K | 65 | 54 |
| 713 | Thrombosis | 37 | 1.6K | 194 | 189 |
| 714 | micromechanics | 38 | 1.6K | 64 | 52 |
| 715 | cloning | 27 | 1.6K | 83 | 118 |
| 716 | Marine Pollution | 32 | 1.6K | 221 | 176 |
| 717 | brain mapping | 30 | 1.6K | 123 | 120 |
| 718 | Documentation | 33 | 1.6K | 26 | 25 |
| 719 | Aerosols | 49 | 1.5K | 61 | 63 |
| 720 | child behavior | 31 | 1.5K | 40 | 40 |
| 721 | sexual behavior | 42 | 1.5K | 68 | 74 |
| 722 | Natural resources | 55 | 1.5K | 47 | 109 |
| 723 | Steroids | 41 | 1.5K | 129 | 104 |
| 724 | machinery | 45 | 1.5K | 55 | 37 |
| 725 | Development | 51 | 1.5K | 58 | 127 |
| 726 | Detectors | 43 | 1.5K | 201 | 136 |
| 727 | Coral reef biology | 39 | 1.5K | 24 | 29 |
| 728 | Community Psychiatry | 44 | 1.4K | 122 | 143 |
| 729 | Evolutionary Genetics | 37 | 1.4K | 23 | 19 |
| 729 | Molecular Epidemiology | 37 | 1.4K | 23 | 19 |
| 731 | Ecological Genetics | 55 | 1.4K | 11 | 12 |
| 732 | Forest genetics | 57 | 1.4K | 2 | 6 |
| 733 | Law | 57 | 1.4K | 146 | 62 |
| 733 | Sustainable agriculture | 52 | 1.4K | 30 | 54 |
| 735 | Oxidation-reduction | 30 | 1.4K | 112 | 198 |
| 736 | Cardiovascular diseases | 82 | 1.4K | 165 | 286 |
| 737 | Multivariate Analysis | 61 | 1.4K | 14 | 41 |
| 738 | Combinatorial chemistry | 30 | 1.4K | 116 | 138 |
| 738 | scientific societies | 40 | 1.4K | 76 | 67 |
| 740 | Public opinion | 27 | 1.4K | 46 | 32 |
| 741 | health planning | 52 | 1.4K | 282 | 223 |
| 742 | Soft Condensed Matter | 39 | 1.4K | 222 | 205 |
| 743 | biopolymers | 39 | 1.4K | 228 | 211 |
| 744 | Cell death | 27 | 1.4K | 290 | 332 |
| 745 | International Relations | 83 | 1.4K | 81 | 125 |
| 746 | Industrial Policy | 55 | 1.4K | 4 | 32 |
| 747 | Medicinal plants | 24 | 1.4K | 299 | 250 |
| 748 | DNA polymerases | 22 | 1.4K | 70 | 142 |
| 749 | livestock | 81 | 1.4K | 25 | 28 |
| 750 | Reservoirs | 65 | 1.4K | 1 | 1 |
| 751 | Molecular Spectroscopy | 32 | 1.4K | 378 | 186 |
| 752 | Radiology | 86 | 1.4K | 96 | 130 |
| 753 | Biosensors | 20 | 1.4K | 381 | 322 |
| 754 | Business Ethics | 17 | 1.4K | 296 | 262 |
| 755 | tillage | 30 | 1.3K | 51 | 60 |
| 756 | Remote Sensing | 46 | 1.3K | 152 | 103 |
| 756 | radiative transfer | 51 | 1.3K | 62 | 74 |
| 756 | Memory disorders | 17 | 1.3K | 37 | 18 |
| 759 | Political Sociology | 23 | 1.3K | 88 | 47 |
| 760 | rural health | 31 | 1.3K | 15 | 10 |
| 761 | Animal Nutrition | 41 | 1.3K | 84 | 71 |
| 762 | Electrophysiology | 53 | 1.3K | 106 | 94 |
| 763 | Political Psychology | 22 | 1.3K | 63 | 50 |
| 764 | Aquatic ecology | 67 | 1.3K | 29 | 71 |
| 765 | Southern states | 127 | 1.3K | 3 | 4 |
| 766 | Career development | 41 | 1.3K | 11 | 6 |
| 767 | Financial management | 21 | 1.3K | 62 | 59 |
| 768 | Marine resources | 42 | 1.3K | 38 | 43 |
| 769 | carcinogens | 32 | 1.3K | 145 | 157 |
| 770 | Securities | 5 | 1.3K | 183 | 5 |
| 771 | Risk Management | 29 | 1.3K | 68 | 62 |
| 771 | Economic Assistance | 40 | 1.3K | 63 | 129 |
| 773 | sports administration | 44 | 1.3K | 9 | 7 |
| 774 | Food service management | 33 | 1.3K | 40 | 60 |
| 774 | embryonic development | 39 | 1.3K | 21 | 28 |
| 776 | Telecommunications | 33 | 1.3K | 40 | 16 |
| 776 | Electrochemical Analysis | 44 | 1.3K | 247 | 244 |
| 778 | Human Geography | 57 | 1.3K | 133 | 177 |
| 779 | drug evaluation | 54 | 1.3K | 78 | 109 |
| 780 | Reproductive toxicology | 9 | 1.3K | 142 | 44 |
| 780 | educational innovations | 57 | 1.3K | 7 | 29 |
| 782 | Neuropsychiatry | 77 | 1.3K | 37 | 121 |
| 783 | Child welfare | 66 | 1.3K | 93 | 130 |
| 784 | Global Health | 55 | 1.3K | 80 | 76 |
| 785 | Clinical Trials | 81 | 1.2K | 29 | 58 |
| 786 | Petrology | 26 | 1.2K | 330 | 301 |
| 787 | microwave communication systems | 41 | 1.2K | 34 | 38 |
| 788 | Neuroimmunology | 30 | 1.2K | 103 | 149 |
| 789 | Health insurance | 36 | 1.2K | 65 | 94 |
| 790 | recreation | 101 | 1.2K | 22 | 54 |
| 791 | nucleotides | 9 | 1.2K | 147 | 4 |
| 792 | Socialization | 31 | 1.2K | 65 | 89 |
| 793 | Entrepreneurship | 12 | 1.2K | 362 | 300 |
| 794 | Criminal Law | 14 | 1.2K | 66 | 21 |
| 795 | healthcare disparities | 59 | 1.2K | 21 | 30 |
| 796 | Thorax | 29 | 1.2K | 81 | 76 |
| 797 | Algebra | 130 | 1.2K | 58 | 94 |
| 798 | Magnetic Materials | 35 | 1.2K | 323 | 274 |
| 799 | Infertility | 29 | 1.2K | 211 | 241 |
| 800 | Chromosomes | 16 | 1.2K | 271 | 162 |
| 801 | Patient education | 47 | 1.2K | 57 | 109 |
| 802 | Plant hormones | 20 | 1.2K | 34 | 16 |
| 803 | Endocrine glands | 7 | 1.2K | 114 | 59 |
| 804 | foreign exchange | 12 | 1.2K | 75 | 25 |
| 805 | Neuroimaging | 9 | 1.2K | 119 | 18 |
| 806 | Ethnology | 97 | 1.2K | 78 | 124 |
| 807 | Biopharmaceutics | 50 | 1.1K | 79 | 185 |
| 807 | Sound | 61 | 1.1K | 94 | 130 |
| 809 | mental processes | 9 | 1.1K | 164 | 24 |
| 810 | Software Engineering | 28 | 1.1K | 215 | 187 |
| 811 | Phonetics | 35 | 1.1K | 29 | 33 |
| 812 | animal diseases | 37 | 1.1K | 62 | 45 |
| 813 | animals | 57 | 1.1K | 100 | 119 |
| 814 | Psychoneuroimmunology | 25 | 1.1K | 105 | 145 |
| 815 | chronic disease | 23 | 1.1K | 52 | 42 |
| 816 | Intelligent Transportation Systems | 45 | 1.1K | 131 | 232 |
| 816 | Marriage | 42 | 1.1K | 47 | 54 |
| 818 | Comparative Advertising | 26 | 1.1K | 2 | 5 |
| 819 | Engineering Geology | 38 | 1.1K | 271 | 302 |
| 819 | Literacy | 30 | 1.1K | 21 | 7 |
| 821 | children | 26 | 1.1K | 60 | 67 |
| 822 | Fishery resources | 32 | 1.1K | 70 | 64 |
| 823 | Fisheries Law | 40 | 1.1K | 7 | 13 |
| 823 | fisheries management | 40 | 1.1K | 7 | 13 |
| 825 | role | 27 | 1.1K | 42 | 59 |
| 826 | Crystallography | 60 | 1.1K | 228 | 173 |
| 827 | Communication in marketing | 27 | 1.1K | 2 | 1 |
| 827 | clay | 29 | 1.1K | 97 | 122 |
| 829 | Appetite | 27 | 1.1K | 101 | 115 |
| 830 | Ergonomics | 134 | 1.1K | 52 | 138 |
| 831 | Pesticide residues | 13 | 1.1K | 6 | 4 |
| 832 | toxicity testing | 37 | 1.1K | 23 | 32 |
| 833 | Functional Analysis | 55 | 1.1K | 167 | 180 |
| 833 | Carbon | 24 | 1.1K | 335 | 421 |
| 835 | Computational Chemistry | 25 | 1.1K | 93 | 147 |
| 836 | Algae | 36 | 1.1K | 123 | 145 |
| 837 | cell interaction | 28 | 1.1K | 181 | 209 |
| 838 | soil pollution | 35 | 1.0K | 17 | 21 |
| 839 | Artificial Organs | 29 | 1.0K | 117 | 46 |
| 840 | Antioxidants | 23 | 1.0K | 117 | 211 |
| 841 | Small Business | 9 | 1.0K | 371 | 284 |
| 842 | Combinatorial analysis | 91 | 1.0K | 62 | 81 |
| 843 | child mental health | 33 | 1.0K | 48 | 40 |
| 844 | Japan | 39 | 1.0K | 263 | 183 |
| 845 | soil conservation | 33 | 1.0K | 55 | 51 |
| 846 | Spine | 19 | 1.0K | 195 | 168 |
| 847 | Parkinson's disease | 32 | 1.0K | 4 | 15 |
| 848 | Latin America | 92 | 1.0K | 84 | 62 |
| 849 | Surface properties | 27 | 1.0K | 186 | 204 |
| 850 | technical education | 43 | 1.0K | 30 | 30 |
| 851 | Nuclear Energy | 89 | 999 | 85 | 122 |
| 851 | Water Purification | 33 | 999 | 163 | 120 |
| 853 | student | 15 | 996 | 4 | 1 |
| 854 | Contraception | 24 | 995 | 124 | 89 |
| 855 | atmosphere | 18 | 991 | 191 | 97 |
| 856 | Bioelectronics | 15 | 985 | 387 | 376 |
| 857 | Dentistry | 43 | 982 | 102 | 82 |
| 857 | Fiber Optics | 21 | 982 | 286 | 171 |
| 859 | Combustion | 55 | 980 | 194 | 287 |
| 860 | Psychiatric Nursing | 33 | 977 | 69 | 38 |
| 861 | vascular diseases | 22 | 972 | 176 | 209 |
| 862 | Multimedia Systems | 40 | 967 | 266 | 252 |
| 863 | Earthquake Engineering | 44 | 965 | 298 | 376 |
| 864 | psychopathology | 17 | 964 | 92 | 96 |
| 865 | Algorithms | 43 | 962 | 27 | 43 |
| 866 | Computer Science | 65 | 961 | 151 | 228 |
| 867 | Inflammation | 29 | 954 | 187 | 273 |
| 868 | sex crimes | 30 | 949 | 83 | 79 |
| 869 | Cheminformatics | 12 | 946 | 45 | 81 |
| 870 | ports | 45 | 940 | 9 | 20 |
| 870 | economic conditions | 10 | 940 | 209 | 101 |
| 872 | Marine Ecology | 55 | 937 | 47 | 93 |
| 872 | mutagens | 21 | 937 | 188 | 211 |
| 874 | Economic Thought | 7 | 935 | 157 | 91 |
| 875 | Seaweed | 30 | 933 | 93 | 122 |
| 876 | ethanol | 39 | 932 | 41 | 66 |
| 877 | particles | 55 | 930 | 50 | 97 |
| 878 | Herpetology | 60 | 927 | 4 | 4 |
| 879 | child abuse | 30 | 926 | 153 | 206 |
| 880 | Probability | 24 | 925 | 95 | 87 |
| 880 | nuclear magnetic resonance spectroscopy | 54 | 925 | 41 | 102 |
| 880 | cardiac catheterization | 65 | 925 | 57 | 86 |
| 883 | pain management | 31 | 924 | 79 | 78 |
| 884 | Surface-Active Agents | 19 | 922 | 246 | 208 |
| 884 | Carcinogenesis | 23 | 922 | 205 | 224 |
| 886 | solar cells | 20 | 914 | 188 | 206 |
| 887 | Telecommunication Systems | 42 | 912 | 206 | 199 |
| 888 | air quality management | 24 | 908 | 39 | 52 |
| 888 | Bacterial diseases | 14 | 908 | 27 | 20 |
| 890 | Stochastic Processes | 38 | 905 | 76 | 64 |
| 890 | impact | 17 | 905 | 77 | 69 |
| 892 | Quantitative Research | 15 | 900 | 68 | 50 |
| 892 | complementary therapies | 42 | 900 | 159 | 219 |
| 894 | Genetic disorders | 22 | 894 | 108 | 86 |
| 895 | Animal husbandry | 21 | 890 | 32 | 23 |
| 895 | ecotourism | 24 | 890 | 12 | 18 |
| 897 | Geographic information systems | 60 | 887 | 52 | 91 |
| 897 | Freezing | 25 | 887 | 46 | 22 |
| 899 | Journalism | 52 | 885 | 29 | 47 |
| 900 | Fish diseases | 37 | 883 | 6 | 9 |
| 901 | Distance Education | 35 | 877 | 11 | 36 |
| 901 | Brain damage | 27 | 877 | 52 | 50 |
| 903 | Feminism | 16 | 873 | 167 | 43 |
| 904 | Risk | 13 | 870 | 177 | 110 |
| 905 | DNA | 14 | 865 | 134 | 37 |
| 906 | Ethnoarchaeology | 27 | 863 | 6 | 15 |
| 906 | Oxidative stress | 21 | 863 | 133 | 264 |
| 908 | Economic planning | 23 | 860 | 47 | 44 |
| 909 | Transport | 29 | 856 | 83 | 111 |
| 909 | cytokines | 35 | 856 | 156 | 289 |
| 911 | poverty | 24 | 854 | 23 | 24 |
| 912 | Solutions | 48 | 852 | 6 | 16 |
| 913 | Sarcopenia | 21 | 841 | 35 | 83 |
| 913 | primary prevention | 21 | 841 | 67 | 34 |
| 915 | Philosophy | 103 | 838 | 198 | 222 |
| 915 | Cosmochemistry | 30 | 838 | 155 | 224 |
| 917 | Developmental Immunology | 24 | 837 | 80 | 102 |
| 918 | Social work | 69 | 836 | 177 | 248 |
| 919 | Computer Engineering | 53 | 834 | 24 | 51 |
| 920 | Marine mammals | 33 | 832 | 22 | 28 |
| 921 | Environmental risk assessment | 29 | 830 | 11 | 18 |
| 922 | viral genetics | 10 | 829 | 122 | 177 |
| 923 | Cognitive Therapy | 27 | 828 | 106 | 115 |
| 924 | Graph Theory | 34 | 822 | 108 | 59 |
| 924 | Sea | 28 | 822 | 70 | 82 |
| 926 | clay minerals | 17 | 821 | 53 | 43 |
| 927 | Palliative Care | 53 | 820 | 72 | 120 |
| 928 | solar power | 17 | 813 | 192 | 202 |
| 929 | Urban Policy | 45 | 812 | 53 | 141 |
| 930 | magnetic resonance | 47 | 811 | 15 | 24 |
| 931 | Telemedicine | 21 | 810 | 44 | 40 |
| 932 | Energy Storage | 14 | 808 | 484 | 347 |
| 932 | international trade | 24 | 808 | 86 | 106 |
| 934 | Reptiles | 47 | 803 | 6 | 6 |
| 935 | health services accessibility | 30 | 802 | 169 | 164 |
| 936 | Highway Engineering | 39 | 801 | 33 | 38 |
| 937 | Antigens | 34 | 799 | 116 | 175 |
| 938 | Game Theory | 8 | 798 | 309 | 92 |
| 938 | transport vesicles | 7 | 798 | 81 | 204 |
| 940 | Transportation Engineering | 39 | 793 | 37 | 54 |
| 941 | Superconductors | 47 | 792 | 162 | 147 |
| 942 | Developmental Neurobiology | 8 | 790 | 233 | 55 |
| 943 | X-ray crystallography | 38 | 788 | 59 | 62 |
| 944 | Organ transplantation | 50 | 785 | 29 | 33 |
| 945 | Physical fitness | 26 | 784 | 203 | 255 |
| 946 | Alternative Medicine | 31 | 780 | 219 | 253 |
| 947 | Antibodies | 30 | 766 | 77 | 118 |
| 948 | speech therapy | 26 | 762 | 81 | 65 |
| 948 | Toxins | 33 | 762 | 88 | 124 |
| 950 | Herbal medicine | 9 | 761 | 302 | 140 |
| 950 | Food preferences | 19 | 761 | 75 | 75 |
| 952 | NMR | 44 | 759 | 19 | 26 |
| 953 | Dynamics | 42 | 753 | 226 | 238 |
| 954 | Hospitals | 78 | 750 | 35 | 70 |
| 955 | Neurotoxicology | 24 | 746 | 63 | 94 |
| 955 | Longevity | 10 | 746 | 35 | 6 |
| 957 | Geometry | 57 | 744 | 134 | 113 |
| 957 | Experimental Psychology | 37 | 744 | 83 | 188 |
| 957 | venom | 31 | 744 | 86 | 115 |
| 960 | Randomized Controlled Trials | 31 | 743 | 183 | 125 |
| 961 | peace | 21 | 742 | 110 | 126 |
| 962 | Hydrodynamics | 32 | 741 | 87 | 151 |
| 963 | dietary supplements | 15 | 733 | 204 | 136 |
| 964 | Regional Economics | 15 | 731 | 99 | 54 |
| 965 | Amphibians | 46 | 729 | 2 | 1 |
| 966 | Feminist Economics | 5 | 728 | 28 | 6 |
| 967 | Arthropods | 58 | 722 | 1 | 4 |
| 967 | rejuvenation | 9 | 722 | 21 | 6 |
| 969 | Agricultural Education | 79 | 719 | 4 | 3 |
| 969 | Technological Innovations | 34 | 719 | 99 | 209 |
| 969 | Autism | 26 | 719 | 139 | 206 |
| 972 | aerosol | 18 | 712 | 89 | 71 |
| 973 | Human biology | 17 | 708 | 170 | 87 |
| 974 | Enzyme | 13 | 704 | 146 | 115 |
| 975 | Quality Assurance | 13 | 700 | 59 | 11 |
| 975 | disabilities | 35 | 700 | 99 | 124 |
| 977 | synthesis | 52 | 699 | 50 | 70 |
| 978 | Regionalism | 11 | 698 | 47 | 11 |
| 979 | eugenics | 39 | 697 | 44 | 80 |
| 980 | Coastal zone management | 38 | 695 | 35 | 97 |
| 981 | investigative techniques | 4 | 693 | 73 | 14 |
| 982 | DNA methylation | 12 | 692 | 59 | 45 |
| 983 | correctional psychology | 22 | 691 | 28 | 44 |
| 984 | Phytochemistry | 23 | 690 | 8 | 16 |
| 984 | Hemostasis | 21 | 690 | 178 | 138 |
| 984 | Phytoremediation | 23 | 690 | 8 | 16 |
| 984 | environmental remediation | 23 | 690 | 8 | 19 |
| 984 | Bioreactors | 23 | 690 | 8 | 16 |
| 989 | Health Services Administration | 33 | 686 | 136 | 190 |
| 990 | Sports Psychology | 17 | 684 | 13 | 24 |
| 991 | Organometallic chemistry | 23 | 682 | 675 | 436 |
| 992 | atmospheric models | 10 | 680 | 325 | 246 |
| 993 | RNA | 17 | 678 | 126 | 158 |
| 994 | place marketing | 16 | 672 | 8 | 8 |
| 995 | Community Psychology | 23 | 669 | 121 | 186 |
| 996 | Behavioral research | 18 | 667 | 62 | 32 |
| 997 | movement | 25 | 666 | 26 | 53 |
| 998 | DNS | 9 | 662 | 177 | 60 |
| 998 | Aquatic animals | 37 | 662 | 6 | 9 |
| 1000 | Adult Education | 44 | 661 | 45 | 44 |