| 1 | Chemistry | 1,852 | 166.5K | 198 | 111 |
| 2 | Biology | 1,442 | 146.2K | 194 | 175 |
| 3 | Physics | 1,334 | 131.0K | 319 | 225 |
| 4 | Science | 1,222 | 126.3K | 248 | 195 |
| 5 | Astronomy | 1,751 | 100.5K | 62 | 81 |
| 6 | Astrophysics | 1,539 | 99.9K | 82 | 106 |
| 7 | Natural history | 389 | 73.5K | 126 | 159 |
| 8 | Ecology | 853 | 65.0K | 143 | 127 |
| 9 | Spectrum analysis | 709 | 54.1K | 121 | 102 |
| 10 | Materials | 411 | 51.3K | 414 | 143 |
| 11 | Molecular Biology | 437 | 37.4K | 534 | 347 |
| 12 | Animal Behavior | 564 | 36.1K | 12 | 12 |
| 13 | Materials Science | 208 | 35.7K | 402 | 111 |
| 14 | Biochemistry | 765 | 30.1K | 495 | 472 |
| 15 | Medicine | 627 | 28.9K | 470 | 437 |
| 16 | Neurology | 292 | 27.6K | 461 | 288 |
| 17 | Ethology | 431 | 24.6K | 10 | 19 |
| 18 | Optics | 465 | 22.5K | 205 | 78 |
| 19 | Geology | 435 | 22.4K | 105 | 89 |
| 20 | Research | 518 | 22.4K | 442 | 365 |
| 21 | Microbiology | 237 | 20.0K | 596 | 390 |
| 22 | Evolution | 246 | 19.5K | 53 | 55 |
| 23 | biological evolution | 208 | 18.6K | 87 | 86 |
| 24 | Neurophysiology | 159 | 18.4K | 292 | 153 |
| 25 | Virology | 195 | 17.2K | 221 | 219 |
| 26 | Behavior | 175 | 16.7K | 251 | 121 |
| 27 | Psychology | 307 | 16.3K | 295 | 214 |
| 28 | human behavior | 124 | 16.2K | 196 | 84 |
| 29 | Psychophysiology | 215 | 15.5K | 238 | 157 |
| 30 | Cognition | 188 | 15.2K | 93 | 51 |
| 31 | Cell Biology | 145 | 14.2K | 450 | 359 |
| 32 | Photonics | 200 | 13.4K | 105 | 66 |
| 33 | Cytology | 194 | 12.4K | 404 | 398 |
| 34 | Meteorology | 156 | 12.2K | 174 | 126 |
| 35 | Environment | 193 | 12.0K | 405 | 449 |
| 36 | Learning | 138 | 11.8K | 58 | 27 |
| 37 | Condensed Matter | 351 | 11.6K | 297 | 313 |
| 38 | Social Psychology | 154 | 11.2K | 172 | 122 |
| 39 | Neurobiology | 87 | 11.2K | 205 | 106 |
| 40 | Bioorganic chemistry | 185 | 10.9K | 108 | 58 |
| 41 | Solid State Physics | 365 | 10.8K | 311 | 326 |
| 42 | Animal ecology | 207 | 10.7K | 11 | 11 |
| 43 | Organic Chemistry | 178 | 10.4K | 214 | 94 |
| 44 | Catalysis | 305 | 10.4K | 241 | 325 |
| 45 | Economics | 371 | 10.2K | 182 | 195 |
| 46 | Molecular Genetics | 98 | 9.8K | 151 | 77 |
| 47 | Public Health | 224 | 9.8K | 392 | 324 |
| 48 | Population Genetics | 98 | 9.3K | 75 | 46 |
| 49 | Geophysics | 236 | 9.3K | 323 | 318 |
| 50 | Sun | 226 | 8.8K | 7 | 9 |
| 51 | Molecular ecology | 81 | 8.7K | 76 | 47 |
| 52 | genome | 19 | 8.7K | 455 | 111 |
| 53 | Solar System | 231 | 8.6K | 23 | 30 |
| 54 | Brain | 109 | 8.2K | 374 | 217 |
| 55 | Botany | 181 | 8.0K | 413 | 406 |
| 56 | Computational Biology | 44 | 7.9K | 464 | 160 |
| 57 | Bioinformatics | 27 | 7.5K | 552 | 130 |
| 58 | Marine Biology | 173 | 7.4K | 161 | 136 |
| 59 | Physical Chemistry | 61 | 7.4K | 385 | 121 |
| 60 | Pollution | 125 | 7.3K | 671 | 614 |
| 61 | Physiology | 193 | 7.3K | 380 | 384 |
| 62 | animals | 112 | 7.1K | 40 | 3 |
| 63 | Biotechnology | 74 | 7.1K | 1084 | 636 |
| 64 | Nuclear Physics | 175 | 7.0K | 729 | 625 |
| 65 | Light | 35 | 7.0K | 151 | 59 |
| 66 | Electrochemistry | 276 | 6.8K | 294 | 289 |
| 67 | Biocompatible Materials | 120 | 6.7K | 501 | 464 |
| 68 | Mathematics | 433 | 6.7K | 394 | 351 |
| 69 | Genetics | 121 | 6.6K | 391 | 431 |
| 70 | Neuropsychology | 107 | 6.5K | 240 | 145 |
| 71 | Geography | 180 | 6.5K | 110 | 115 |
| 72 | Zoology | 152 | 6.5K | 162 | 83 |
| 73 | Nanotechnology | 124 | 6.4K | 735 | 659 |
| 74 | Earth Sciences | 111 | 6.4K | 349 | 226 |
| 75 | Philosophy | 404 | 6.3K | 10 | 22 |
| 76 | viruses | 86 | 6.2K | 168 | 140 |
| 77 | Optical materials | 135 | 6.1K | 206 | 219 |
| 78 | Comparative Psychology | 46 | 5.9K | 2 | 1 |
| 79 | Geochemistry | 126 | 5.9K | 230 | 226 |
| 80 | Statistics | 101 | 5.5K | 347 | 167 |
| 81 | behavioral medicine | 24 | 5.4K | 334 | 85 |
| 82 | Social Sciences | 143 | 5.4K | 233 | 156 |
| 83 | Sociology | 91 | 5.3K | 374 | 229 |
| 84 | Solid State Chemistry | 166 | 5.3K | 139 | 81 |
| 85 | Agriculture | 68 | 5.1K | 240 | 107 |
| 86 | Social behavior | 107 | 5.0K | 53 | 72 |
| 87 | Cognitive neuroscience | 42 | 5.0K | 186 | 122 |
| 88 | Statistical physics | 149 | 4.9K | 497 | 427 |
| 89 | Planets | 81 | 4.9K | 254 | 212 |
| 90 | Primates | 111 | 4.8K | 24 | 18 |
| 91 | Human genetics | 15 | 4.8K | 760 | 532 |
| 92 | Europe | 249 | 4.8K | 130 | 166 |
| 93 | nucleic acids | 66 | 4.6K | 255 | 271 |
| 94 | Marine mammals | 119 | 4.5K | 4 | 4 |
| 95 | Environmental Management | 69 | 4.5K | 355 | 233 |
| 96 | Perception | 71 | 4.5K | 268 | 154 |
| 97 | Agricultural Ecology | 44 | 4.4K | 115 | 64 |
| 98 | Biodiversity conservation | 74 | 4.4K | 167 | 290 |
| 99 | Medical Anthropology | 58 | 4.2K | 159 | 122 |
| 100 | Biodiversity | 79 | 4.2K | 199 | 194 |
| 101 | environmental pollution | 68 | 4.2K | 783 | 588 |
| 102 | management | 89 | 4.1K | 462 | 505 |
| 103 | Organometallic compounds | 80 | 4.1K | 67 | 41 |
| 104 | personality | 36 | 4.0K | 370 | 193 |
| 105 | Electronics | 88 | 3.9K | 535 | 320 |
| 106 | Petrology | 70 | 3.9K | 148 | 120 |
| 107 | Nervous system | 71 | 3.9K | 352 | 311 |
| 108 | Wildlife conservation | 70 | 3.9K | 81 | 88 |
| 109 | Oceanography | 82 | 3.8K | 238 | 213 |
| 110 | Pharmaceutical Chemistry | 101 | 3.8K | 483 | 463 |
| 111 | Polymers | 75 | 3.7K | 960 | 657 |
| 112 | Chemical Engineering | 47 | 3.7K | 1291 | 817 |
| 112 | Environmental Policy | 59 | 3.7K | 521 | 404 |
| 114 | Crystallography | 571 | 3.6K | 1 | 54 |
| 115 | polymerization | 65 | 3.6K | 860 | 546 |
| 116 | Animal welfare | 17 | 3.5K | 34 | 2 |
| 117 | Physical organic chemistry | 102 | 3.5K | 29 | 19 |
| 118 | Mineralogy | 62 | 3.5K | 239 | 153 |
| 119 | Epidemiology | 99 | 3.4K | 426 | 395 |
| 120 | Molecular structure | 78 | 3.4K | 228 | 192 |
| 121 | Cognitive Science | 43 | 3.3K | 231 | 162 |
| 122 | Biophysics | 109 | 3.3K | 910 | 923 |
| 123 | Human Geography | 66 | 3.2K | 110 | 86 |
| 124 | Meteorites | 62 | 3.2K | 165 | 188 |
| 125 | Green Chemistry | 49 | 3.2K | 280 | 225 |
| 126 | Quantum electronics | 97 | 3.2K | 139 | 90 |
| 127 | Birds | 123 | 3.2K | 53 | 40 |
| 128 | Mycology | 15 | 3.2K | 643 | 140 |
| 129 | International Relations | 185 | 3.1K | 17 | 40 |
| 130 | Fungi | 12 | 3.1K | 440 | 92 |
| 131 | lasers | 100 | 3.1K | 195 | 130 |
| 132 | Endocrinology | 69 | 3.0K | 520 | 547 |
| 133 | nanoscience | 57 | 3.0K | 573 | 525 |
| 134 | Regional Planning | 67 | 3.0K | 155 | 98 |
| 135 | Energy Policy | 24 | 2.9K | 887 | 379 |
| 136 | Conservation Biology | 57 | 2.9K | 101 | 107 |
| 137 | Nanostructured Materials | 103 | 2.9K | 437 | 542 |
| 138 | Psychiatry | 63 | 2.8K | 791 | 691 |
| 139 | Ornithology | 98 | 2.8K | 43 | 32 |
| 140 | energy resources | 21 | 2.8K | 376 | 198 |
| 141 | Business Ethics | 17 | 2.8K | 296 | 101 |
| 142 | Neurons | 23 | 2.7K | 154 | 233 |
| 143 | Engineering | 73 | 2.7K | 640 | 373 |
| 144 | United States | 74 | 2.7K | 809 | 640 |
| 145 | Energy Conversion | 23 | 2.7K | 362 | 276 |
| 146 | organization | 42 | 2.6K | 91 | 160 |
| 147 | Bioengineering | 41 | 2.6K | 1049 | 866 |
| 148 | Paleontology | 62 | 2.6K | 182 | 88 |
| 149 | Plant Ecology | 50 | 2.6K | 311 | 289 |
| 150 | motivation | 2 | 2.5K | 445 | 11 |
| 151 | Child psychology | 48 | 2.5K | 288 | 284 |
| 152 | Paleoclimatology | 61 | 2.5K | 131 | 127 |
| 153 | Renewable Energy Sources | 14 | 2.5K | 1234 | 584 |
| 154 | Environmental Chemistry | 15 | 2.5K | 790 | 360 |
| 154 | Climate change | 38 | 2.5K | 166 | 362 |
| 154 | Eutrophication | 38 | 2.5K | 162 | 358 |
| 157 | Cancer | 45 | 2.5K | 720 | 654 |
| 158 | Surface Chemistry | 88 | 2.4K | 668 | 749 |
| 159 | finance | 68 | 2.4K | 323 | 251 |
| 160 | Comparative Physiology | 47 | 2.4K | 87 | 63 |
| 161 | city planning | 51 | 2.4K | 218 | 130 |
| 162 | Child | 26 | 2.3K | 677 | 258 |
| 163 | Biometrics | 47 | 2.3K | 173 | 115 |
| 164 | Pharmacology | 63 | 2.3K | 1100 | 988 |
| 164 | Analytical Chemistry | 63 | 2.3K | 1017 | 911 |
| 166 | Environmental Health | 61 | 2.3K | 1021 | 1066 |
| 167 | Economic History | 150 | 2.2K | 212 | 327 |
| 168 | Small Business | 25 | 2.2K | 114 | 138 |
| 169 | Econometrics | 33 | 2.2K | 318 | 174 |
| 169 | fuel cells | 41 | 2.2K | 211 | 238 |
| 171 | Child Development | 31 | 2.2K | 503 | 321 |
| 172 | Host-parasite interactions | 26 | 2.2K | 286 | 281 |
| 172 | Immunity | 26 | 2.2K | 513 | 493 |
| 174 | Health Policy | 65 | 2.1K | 306 | 266 |
| 175 | exobiology | 22 | 2.1K | 38 | 22 |
| 176 | Aquatic ecology | 82 | 2.1K | 18 | 25 |
| 177 | Virulence | 28 | 2.1K | 277 | 261 |
| 178 | Neurochemistry | 61 | 2.1K | 453 | 477 |
| 179 | Molecular evolution | 38 | 2.1K | 261 | 252 |
| 180 | Water pollution | 55 | 2.0K | 488 | 554 |
| 181 | cryosphere | 34 | 2.0K | 64 | 55 |
| 182 | Medical Laboratory Science | 28 | 2.0K | 520 | 354 |
| 183 | Medical Microbiology | 34 | 2.0K | 527 | 452 |
| 184 | infection | 23 | 2.0K | 456 | 236 |
| 184 | United Kingdom | 121 | 2.0K | 87 | 268 |
| 184 | Fisheries | 55 | 2.0K | 207 | 181 |
| 187 | International Finance | 62 | 1.9K | 167 | 160 |
| 188 | Organometallic chemistry | 80 | 1.9K | 131 | 111 |
| 189 | Vision | 41 | 1.9K | 122 | 117 |
| 190 | Scotland | 117 | 1.9K | 4 | 3 |
| 191 | Geomorphology | 42 | 1.9K | 236 | 236 |
| 192 | Bacteriology | 54 | 1.9K | 331 | 428 |
| 192 | miniaturization | 26 | 1.9K | 509 | 438 |
| 194 | Anthropology | 90 | 1.9K | 162 | 154 |
| 195 | Industrial Microbiology | 6 | 1.8K | 1296 | 320 |
| 196 | Genomics | 49 | 1.8K | 601 | 559 |
| 197 | Developmental Biology | 40 | 1.8K | 423 | 465 |
| 198 | Ophthalmology | 43 | 1.8K | 403 | 325 |
| 199 | Quantum Gravity | 27 | 1.8K | 887 | 606 |
| 200 | Health Services Research | 28 | 1.8K | 371 | 208 |
| 201 | Memory | 46 | 1.8K | 348 | 333 |
| 202 | Infections | 19 | 1.8K | 319 | 194 |
| 203 | Magnetic Resonance Spectroscopy | 63 | 1.8K | 142 | 141 |
| 204 | Entomology | 40 | 1.7K | 496 | 261 |
| 205 | Nutrition | 18 | 1.7K | 1577 | 859 |
| 206 | Growth | 35 | 1.7K | 259 | 321 |
| 207 | Clinical Chemistry | 38 | 1.7K | 638 | 548 |
| 208 | Biomedical Engineering | 62 | 1.7K | 1009 | 1100 |
| 209 | Human-Computer Interaction | 23 | 1.6K | 358 | 139 |
| 210 | Psycholinguistics | 31 | 1.6K | 222 | 189 |
| 211 | Anatomy | 43 | 1.6K | 415 | 378 |
| 212 | economic policy | 93 | 1.6K | 183 | 236 |
| 213 | Histology | 42 | 1.6K | 366 | 342 |
| 214 | Aquaculture | 20 | 1.6K | 470 | 214 |
| 215 | Bioinorganic chemistry | 66 | 1.6K | 144 | 180 |
| 216 | Molecules | 32 | 1.6K | 415 | 254 |
| 217 | Zeolites | 30 | 1.6K | 143 | 90 |
| 218 | Information Theory | 15 | 1.6K | 573 | 218 |
| 219 | Parasitic Diseases | 19 | 1.6K | 630 | 276 |
| 220 | Genetic engineering | 28 | 1.5K | 533 | 431 |
| 221 | Microelectronics | 21 | 1.5K | 615 | 423 |
| 222 | Metabolism | 15 | 1.5K | 966 | 693 |
| 223 | Immunology | 43 | 1.5K | 738 | 810 |
| 224 | Biochemical Engineering | 27 | 1.5K | 1094 | 1101 |
| 225 | Microbial Ecology | 41 | 1.5K | 478 | 623 |
| 226 | sexual behavior | 18 | 1.5K | 175 | 78 |
| 227 | Marine Pollution | 35 | 1.5K | 195 | 187 |
| 228 | Magnetic Materials | 46 | 1.4K | 241 | 228 |
| 229 | Technology | 31 | 1.4K | 1115 | 731 |
| 230 | Housing | 26 | 1.4K | 58 | 37 |
| 231 | energy development | 4 | 1.4K | 676 | 183 |
| 232 | History | 393 | 1.4K | 17 | 17 |
| 233 | Algebra | 102 | 1.4K | 95 | 70 |
| 234 | Demography | 43 | 1.4K | 73 | 82 |
| 235 | Cell differentiation | 30 | 1.4K | 408 | 484 |
| 236 | Computer Graphics | 24 | 1.4K | 516 | 284 |
| 237 | Business | 37 | 1.4K | 507 | 653 |
| 238 | Embryology | 27 | 1.4K | 435 | 405 |
| 239 | Population | 54 | 1.4K | 62 | 107 |
| 240 | medical education | 43 | 1.4K | 311 | 259 |
| 241 | Telecommunication | 10 | 1.3K | 1431 | 549 |
| 242 | Human evolution | 17 | 1.3K | 123 | 86 |
| 243 | Cerebral cortex | 24 | 1.3K | 255 | 232 |
| 244 | gene mapping | 28 | 1.3K | 478 | 464 |
| 245 | Oncology | 16 | 1.3K | 742 | 835 |
| 246 | Leadership | 6 | 1.3K | 317 | 108 |
| 247 | Plant physiology | 20 | 1.3K | 804 | 647 |
| 248 | Developing countries | 55 | 1.3K | 293 | 376 |
| 249 | Radiobiology | 25 | 1.3K | 350 | 269 |
| 250 | Archaeology | 57 | 1.3K | 212 | 206 |
| 251 | Quantum Optics | 35 | 1.2K | 133 | 83 |
| 252 | Surgery | 41 | 1.2K | 326 | 497 |
| 253 | terrorism | 59 | 1.2K | 2 | 5 |
| 254 | Health Education | 43 | 1.2K | 360 | 318 |
| 255 | Visual Perception | 29 | 1.2K | 405 | 348 |
| 256 | Immunochemistry | 6 | 1.2K | 635 | 107 |
| 257 | Public opinion | 10 | 1.2K | 180 | 45 |
| 258 | Crystallization | 65 | 1.2K | 6 | 24 |
| 259 | Developmental Immunology | 16 | 1.2K | 132 | 63 |
| 260 | nuclear magnetic resonance | 37 | 1.2K | 233 | 184 |
| 261 | peace | 17 | 1.1K | 136 | 89 |
| 262 | Developmental Psychology | 18 | 1.1K | 351 | 282 |
| 263 | Electrochemical Analysis | 21 | 1.1K | 518 | 272 |
| 264 | Chromosomes | 29 | 1.1K | 152 | 173 |
| 265 | industrial relations | 33 | 1.1K | 154 | 93 |
| 266 | violence | 54 | 1.1K | 102 | 201 |
| 267 | Public Administration | 35 | 1.1K | 290 | 240 |
| 268 | Mobile Computing | 19 | 1.1K | 316 | 177 |
| 269 | Membranes | 24 | 1.1K | 584 | 578 |
| 270 | Wireless Communication Systems | 21 | 1.1K | 898 | 542 |
| 271 | Sustainable Engineering | 19 | 1.1K | 536 | 425 |
| 271 | population geography | 44 | 1.1K | 9 | 26 |
| 273 | Natural resources | 25 | 1.1K | 141 | 150 |
| 274 | energy conservation | 12 | 1.1K | 948 | 653 |
| 275 | Political Psychology | 15 | 1.1K | 105 | 75 |
| 276 | counseling | 34 | 1.0K | 301 | 260 |
| 277 | intergroup relations | 10 | 1.0K | 53 | 23 |
| 278 | Attention | 21 | 1.0K | 524 | 386 |
| 279 | Logic | 42 | 1.0K | 25 | 13 |
| 280 | China | 25 | 1.0K | 829 | 487 |
| 281 | Plants | 33 | 1.0K | 478 | 633 |
| 282 | ecosystem | 25 | 1.0K | 347 | 384 |
| 283 | Artificial Intelligence | 52 | 1.0K | 819 | 1055 |
| 284 | Linguistics | 25 | 1.0K | 394 | 242 |
| 285 | Continental shelf | 15 | 1.0K | 113 | 64 |
| 286 | Colloids | 35 | 1.0K | 1199 | 1301 |
| 287 | Quantum theory | 28 | 999 | 231 | 159 |
| 288 | Chromosome mapping | 24 | 989 | 473 | 463 |
| 289 | disarmament | 13 | 987 | 34 | 11 |
| 290 | Patient education | 30 | 986 | 102 | 133 |
| 291 | Human Rights | 14 | 983 | 156 | 33 |
| 292 | Oncogenes | 6 | 975 | 650 | 437 |
| 293 | Recombinant DNA | 19 | 964 | 448 | 291 |
| 294 | Molecular cloning | 18 | 949 | 431 | 267 |
| 294 | Genetic recombination | 18 | 949 | 422 | 262 |
| 296 | Psychopharmacology | 20 | 940 | 476 | 464 |
| 297 | Reproduction | 19 | 932 | 825 | 599 |
| 298 | plant molecular biology | 12 | 929 | 686 | 599 |
| 299 | Ethnology | 83 | 924 | 96 | 154 |
| 300 | Knowledge | 56 | 922 | 28 | 42 |
| 300 | Africa | 56 | 922 | 134 | 132 |
| 302 | Developmental Disabilities | 11 | 917 | 455 | 289 |
| 303 | Medical genetics | 19 | 913 | 843 | 853 |
| 304 | Education | 85 | 907 | 524 | 789 |
| 305 | Hydrology | 21 | 899 | 830 | 645 |
| 306 | Water | 18 | 890 | 955 | 931 |
| 307 | Land use | 13 | 886 | 420 | 207 |
| 308 | Food | 12 | 871 | 1532 | 1004 |
| 309 | enzymes | 17 | 865 | 551 | 401 |
| 310 | Social problems | 8 | 864 | 336 | 146 |
| 311 | Photochemistry | 18 | 846 | 578 | 391 |
| 312 | Fluid Dynamics | 46 | 842 | 160 | 246 |
| 313 | Biogeography | 19 | 841 | 327 | 386 |
| 314 | Quality of life | 10 | 829 | 653 | 351 |
| 315 | Radiology | 33 | 826 | 269 | 210 |
| 316 | Organizational Sociology | 17 | 825 | 72 | 46 |
| 317 | language | 19 | 823 | 236 | 209 |
| 318 | mammals | 19 | 819 | 288 | 172 |
| 319 | Psychosomatic Medicine | 11 | 814 | 321 | 214 |
| 320 | Paleoecology | 29 | 804 | 264 | 321 |
| 321 | Mental Disorders | 21 | 803 | 896 | 900 |
| 322 | X-ray crystallography | 29 | 800 | 89 | 61 |
| 323 | Australia | 26 | 797 | 390 | 284 |
| 324 | children | 9 | 786 | 214 | 113 |
| 325 | Pediatrics | 8 | 778 | 1153 | 715 |
| 326 | Cheminformatics | 13 | 773 | 38 | 90 |
| 327 | Paleogeography | 25 | 771 | 258 | 303 |
| 328 | Economic Development | 39 | 767 | 266 | 501 |
| 329 | Pharmaceutical Technology | 19 | 760 | 497 | 429 |
| 330 | Atomic spectroscopy | 30 | 759 | 241 | 244 |
| 330 | Laser Spectroscopy | 30 | 759 | 129 | 125 |
| 332 | Plant cells | 12 | 758 | 526 | 605 |
| 333 | Critical Care | 5 | 751 | 869 | 594 |
| 333 | Critical Care Medicine | 5 | 751 | 841 | 590 |
| 335 | Nonlinear Dynamics | 35 | 749 | 606 | 662 |
| 336 | Phylogeny | 9 | 747 | 432 | 272 |
| 337 | catalytic activity | 17 | 744 | 183 | 168 |
| 338 | Fiber Optics | 11 | 739 | 449 | 211 |
| 339 | magnetic resonance | 30 | 726 | 33 | 33 |
| 340 | Medical Oncology | 6 | 720 | 957 | 547 |
| 341 | mathematical analysis | 62 | 719 | 509 | 579 |
| 342 | natural products | 12 | 717 | 846 | 401 |
| 343 | human development | 12 | 716 | 340 | 240 |
| 344 | Mathematical Physics | 66 | 713 | 594 | 840 |
| 344 | Superconductors | 23 | 713 | 279 | 161 |
| 346 | Fluid Mechanics | 23 | 711 | 478 | 423 |
| 347 | nuclear magnetic resonance spectroscopy | 35 | 709 | 97 | 134 |
| 348 | Public Policy | 31 | 707 | 387 | 471 |
| 348 | Child welfare | 5 | 707 | 818 | 219 |
| 350 | Environmental Engineering | 14 | 703 | 1722 | 1302 |
| 350 | Climatology | 25 | 703 | 494 | 589 |
| 352 | Emotions | 11 | 701 | 270 | 223 |
| 353 | Political Science | 66 | 694 | 270 | 410 |
| 354 | Periglacial processes | 12 | 684 | 25 | 30 |
| 354 | Permafrost | 12 | 684 | 25 | 30 |
| 354 | Frozen ground | 12 | 684 | 25 | 30 |
| 357 | Sedimentary rocks | 6 | 675 | 402 | 138 |
| 358 | Metallurgy | 21 | 671 | 796 | 668 |
| 359 | Analytical Biochemistry | 15 | 668 | 661 | 453 |
| 360 | Diplomatic relations | 96 | 661 | 27 | 35 |
| 361 | Data Mining | 19 | 657 | 422 | 466 |
| 362 | biological factors | 10 | 652 | 1003 | 553 |
| 363 | computer networks | 16 | 647 | 1038 | 808 |
| 363 | Diabetes | 10 | 647 | 928 | 746 |
| 365 | NMR | 31 | 636 | 32 | 35 |
| 366 | health services accessibility | 37 | 635 | 138 | 206 |
| 367 | Environmental monitoring | 20 | 633 | 1485 | 1628 |
| 367 | Geodynamics | 8 | 633 | 535 | 351 |
| 367 | Information Science | 8 | 633 | 1578 | 868 |
| 370 | Coastal zone management | 9 | 623 | 289 | 112 |
| 370 | Mental illness | 18 | 623 | 650 | 752 |
| 372 | Aging | 24 | 622 | 820 | 859 |
| 373 | Nanoparticles | 11 | 618 | 928 | 667 |
| 374 | Sports Medicine | 12 | 614 | 1201 | 770 |
| 375 | Neurolinguistics | 7 | 612 | 265 | 145 |
| 375 | Speech Disorders | 7 | 612 | 660 | 326 |
| 375 | Speech | 7 | 612 | 585 | 311 |
| 378 | environmental protection | 18 | 608 | 1423 | 1386 |
| 379 | Land Use Planning | 24 | 603 | 40 | 105 |
| 380 | Diabetes mellitus | 8 | 599 | 982 | 749 |
| 381 | Marine Ecology | 34 | 595 | 107 | 154 |
| 382 | plant communities | 10 | 590 | 554 | 502 |
| 383 | polar regions | 24 | 584 | 121 | 138 |
| 384 | Toxicology | 20 | 573 | 1739 | 1824 |
| 385 | commerce | 26 | 570 | 318 | 518 |
| 386 | environmental indicators | 10 | 561 | 543 | 412 |
| 387 | cell physiology | 10 | 559 | 708 | 671 |
| 388 | Transport | 20 | 557 | 129 | 178 |
| 388 | Sea | 20 | 557 | 103 | 130 |
| 388 | Fishery resources | 20 | 557 | 119 | 147 |
| 391 | Diagnostic Imaging | 15 | 555 | 701 | 587 |
| 391 | drug therapy | 9 | 555 | 987 | 718 |
| 393 | Industrial Policy | 13 | 553 | 151 | 136 |
| 394 | Neuropsychiatry | 17 | 551 | 240 | 248 |
| 395 | Randomized Controlled Trials | 8 | 550 | 518 | 181 |
| 395 | Crystal growth | 26 | 550 | 217 | 289 |
| 397 | Ethnic relations | 30 | 544 | 55 | 70 |
| 398 | Obesity | 10 | 541 | 903 | 781 |
| 399 | Nanostructures | 18 | 532 | 679 | 812 |
| 400 | Respiration | 9 | 528 | 759 | 566 |
| 401 | Molecular Microbiology | 14 | 523 | 356 | 473 |
| 401 | Antibacterial agents | 10 | 523 | 261 | 183 |
| 403 | Pathology | 23 | 516 | 644 | 802 |
| 403 | Informatics | 15 | 516 | 252 | 234 |
| 405 | Industrial Sociology | 10 | 511 | 65 | 47 |
| 405 | gene therapy | 7 | 511 | 559 | 428 |
| 407 | Plant Taxonomy | 4 | 507 | 322 | 95 |
| 408 | proteins | 15 | 495 | 819 | 718 |
| 409 | water supply | 9 | 492 | 424 | 383 |
| 410 | Nonlinear Optics | 5 | 487 | 80 | 17 |
| 411 | Plant Morphology | 14 | 481 | 163 | 109 |
| 412 | visualization | 21 | 475 | 453 | 298 |
| 413 | Marine resources | 6 | 471 | 402 | 166 |
| 413 | Therapeutics | 8 | 471 | 846 | 674 |
| 415 | Biogeochemistry | 19 | 464 | 363 | 554 |
| 415 | Ore deposits | 9 | 464 | 260 | 184 |
| 417 | Urban Geography | 6 | 457 | 139 | 50 |
| 418 | Clinical Psychology | 15 | 455 | 515 | 573 |
| 418 | Numerical Analysis | 38 | 455 | 569 | 739 |
| 420 | Computational Chemistry | 25 | 453 | 93 | 263 |
| 421 | Breeding | 16 | 450 | 427 | 453 |
| 422 | Sedimentology | 10 | 449 | 245 | 213 |
| 422 | data collection | 14 | 449 | 318 | 396 |
| 424 | Hippocampus | 4 | 448 | 242 | 142 |
| 425 | Youth | 7 | 446 | 406 | 299 |
| 426 | sanitation | 11 | 443 | 698 | 926 |
| 426 | feeding behavior | 9 | 443 | 356 | 305 |
| 428 | Urban Policy | 11 | 437 | 333 | 276 |
| 428 | Sites | 12 | 437 | 223 | 248 |
| 430 | Biogeochemical cycles | 7 | 430 | 229 | 284 |
| 430 | Appetite | 8 | 430 | 327 | 273 |
| 432 | internet | 5 | 429 | 1198 | 625 |
| 433 | foreign policy | 78 | 428 | 15 | 14 |
| 434 | alcoholism | 11 | 422 | 633 | 589 |
| 435 | Luminescence | 21 | 421 | 357 | 336 |
| 436 | Sustainable Development | 16 | 418 | 689 | 902 |
| 437 | Cardiovascular system | 5 | 416 | 866 | 785 |
| 438 | Geriatrics | 17 | 414 | 1045 | 1017 |
| 439 | Plant diseases | 10 | 411 | 1026 | 749 |
| 440 | Proteomics | 11 | 408 | 469 | 483 |
| 441 | Systems Biology | 19 | 407 | 477 | 581 |
| 442 | health planning | 29 | 405 | 530 | 706 |
| 442 | race relations | 15 | 405 | 196 | 175 |
| 444 | Optical Communications | 8 | 402 | 413 | 175 |
| 445 | Intelligence | 6 | 400 | 163 | 115 |
| 446 | Health Services Administration | 13 | 398 | 316 | 302 |
| 447 | Ethnic Conflict | 14 | 397 | 64 | 73 |
| 447 | forced migration | 14 | 397 | 64 | 73 |
| 449 | Research Design | 10 | 396 | 544 | 492 |
| 450 | Medical Technology | 5 | 394 | 1097 | 585 |
| 450 | Coral reef biology | 12 | 394 | 108 | 129 |
| 452 | Environmental Microbiology | 8 | 393 | 741 | 763 |
| 453 | Oral Medicine | 8 | 391 | 415 | 127 |
| 454 | Biosensors | 4 | 389 | 1071 | 829 |
| 455 | Educational Psychology | 35 | 386 | 359 | 646 |
| 456 | Asia | 21 | 380 | 849 | 792 |
| 457 | Chemotherapy | 4 | 377 | 855 | 521 |
| 457 | Evolutionary Psychology | 10 | 377 | 41 | 23 |
| 459 | Genetic therapy | 8 | 376 | 543 | 490 |
| 460 | Infertility | 7 | 374 | 491 | 472 |
| 460 | fertility | 7 | 374 | 539 | 501 |
| 462 | Computer Vision | 5 | 373 | 860 | 585 |
| 462 | Metabolic diseases | 5 | 373 | 1328 | 1091 |
| 462 | Diagnostic microbiology | 11 | 373 | 481 | 698 |
| 462 | foreign exchange | 8 | 373 | 147 | 134 |
| 466 | Democracy | 14 | 370 | 65 | 40 |
| 466 | Democratization | 12 | 370 | 15 | 22 |
| 468 | Cell death | 2 | 365 | 1062 | 680 |
| 469 | Mathematical Economics | 9 | 364 | 139 | 158 |
| 470 | Bioelectronics | 3 | 363 | 1064 | 778 |
| 471 | Underwater Archaeology | 88 | 362 | 3 | 4 |
| 471 | protein | 8 | 362 | 666 | 499 |
| 471 | synthesis | 12 | 362 | 436 | 179 |
| 474 | mycoses | 2 | 361 | 831 | 459 |
| 474 | Bacterial infections | 2 | 361 | 842 | 455 |
| 476 | Statistical Mechanics | 19 | 360 | 188 | 206 |
| 477 | rehabilitation | 8 | 359 | 1202 | 913 |
| 478 | Environmental Toxicology | 4 | 356 | 1963 | 1263 |
| 479 | Energy Storage | 15 | 353 | 455 | 592 |
| 480 | Paleoceanography | 6 | 352 | 114 | 132 |
| 481 | Magnetohydrodynamics | 17 | 349 | 91 | 99 |
| 482 | preventive medicine | 4 | 347 | 860 | 548 |
| 483 | Educational Technology | 7 | 346 | 1041 | 656 |
| 484 | Sports | 9 | 342 | 1185 | 862 |
| 485 | probabilities | 20 | 339 | 514 | 432 |
| 486 | Semigroups | 41 | 338 | 4 | 6 |
| 487 | food technology | 4 | 337 | 2075 | 1336 |
| 488 | Information Technology | 8 | 336 | 1488 | 1089 |
| 489 | soil microbiology | 6 | 335 | 961 | 981 |
| 490 | Cultural Anthropology | 17 | 334 | 10 | 13 |
| 490 | Combinatorial chemistry | 6 | 334 | 455 | 425 |
| 492 | Ecological Genetics | 11 | 331 | 219 | 143 |
| 492 | Geographic information systems | 18 | 331 | 269 | 284 |
| 492 | Water Microbiology | 4 | 331 | 336 | 129 |
| 495 | Photobiology | 6 | 330 | 941 | 575 |
| 496 | Radiation | 17 | 328 | 827 | 799 |
| 497 | Food Microbiology | 4 | 325 | 957 | 732 |
| 498 | Wildlife management | 16 | 322 | 167 | 184 |
| 499 | Community Psychology | 14 | 321 | 189 | 295 |
| 500 | Europa | 5 | 320 | 375 | 199 |
| 501 | Geomagnetism | 5 | 318 | 435 | 300 |
| 501 | Diet | 6 | 318 | 1214 | 1153 |
| 503 | Agricultural Chemistry | 8 | 317 | 1306 | 1140 |
| 503 | sedimentary basins | 3 | 317 | 187 | 95 |
| 503 | Politics | 4 | 317 | 435 | 198 |
| 503 | government | 4 | 317 | 470 | 229 |
| 507 | Vaccines | 13 | 316 | 655 | 723 |
| 508 | Computer Science | 16 | 314 | 755 | 677 |
| 508 | Industrial Organization | 9 | 314 | 125 | 124 |
| 510 | Financial Institutions | 16 | 313 | 32 | 110 |
| 511 | drugs | 12 | 312 | 902 | 913 |
| 512 | social conflict | 15 | 311 | 28 | 36 |
| 513 | global environmental change | 9 | 308 | 370 | 493 |
| 514 | Intellectual disability | 17 | 307 | 265 | 330 |
| 515 | Stochastic Processes | 9 | 302 | 460 | 274 |
| 515 | Biodegradation | 3 | 302 | 736 | 329 |
| 515 | mutagens | 17 | 302 | 216 | 463 |
| 515 | DNA polymerases | 4 | 302 | 292 | 375 |
| 515 | Fouling | 3 | 302 | 210 | 89 |
| 520 | pain | 5 | 301 | 867 | 669 |
| 521 | Entrepreneurship | 7 | 300 | 593 | 675 |
| 522 | Memory disorders | 12 | 299 | 72 | 115 |
| 522 | Genetic regulation | 8 | 299 | 562 | 609 |
| 524 | Tourism | 4 | 298 | 1453 | 1050 |
| 525 | Atmospheric Physics | 12 | 296 | 702 | 819 |
| 525 | Nanophotonics | 3 | 296 | 330 | 157 |
| 527 | housing policy | 10 | 295 | 25 | 21 |
| 528 | Middle East | 29 | 294 | 145 | 234 |
| 529 | Anxiety Disorders | 3 | 293 | 454 | 368 |
| 529 | Anxiety | 3 | 293 | 454 | 371 |
| 529 | Gerontology | 11 | 293 | 905 | 752 |
| 532 | Rural Development | 7 | 290 | 271 | 227 |
| 533 | Epigenetics | 8 | 289 | 60 | 33 |
| 533 | Epigenomics | 8 | 289 | 57 | 31 |
| 535 | Genes | 14 | 286 | 393 | 477 |
| 536 | free radicals | 3 | 285 | 1170 | 906 |
| 537 | Semiconductors | 16 | 284 | 865 | 880 |
| 538 | Malaria | 7 | 281 | 336 | 285 |
| 538 | Consciousness | 7 | 281 | 278 | 215 |
| 540 | Mutagenesis | 15 | 278 | 66 | 108 |
| 541 | population trends | 7 | 276 | 23 | 74 |
| 542 | Economic Assistance | 19 | 275 | 160 | 433 |
| 543 | Ethics | 30 | 271 | 155 | 311 |
| 543 | body temperature | 11 | 271 | 135 | 149 |
| 543 | police | 10 | 271 | 153 | 95 |
| 546 | Transportation | 6 | 270 | 1103 | 862 |
| 547 | international cooperation | 10 | 266 | 250 | 271 |
| 548 | child behavior | 3 | 265 | 378 | 240 |
| 548 | Catalysts | 5 | 265 | 503 | 271 |
| 550 | Urology | 8 | 264 | 811 | 732 |
| 550 | Cytogenetics | 8 | 264 | 716 | 830 |
| 552 | Scandinavia | 12 | 263 | 199 | 226 |
| 552 | Demographic research | 13 | 263 | 31 | 93 |
| 554 | Information Systems | 3 | 260 | 1370 | 671 |
| 554 | Environmental Law | 3 | 260 | 982 | 857 |
| 554 | Marine Biotechnology | 1 | 260 | 405 | 84 |
| 557 | Social Change | 12 | 259 | 390 | 822 |
| 558 | Soil Science | 11 | 257 | 916 | 1105 |
| 558 | Functional Genomics | 4 | 257 | 188 | 165 |
| 560 | Macroeconomics | 10 | 254 | 115 | 116 |
| 561 | Regional Economics | 6 | 251 | 278 | 197 |
| 561 | Mass Spectrometry | 13 | 251 | 498 | 582 |
| 563 | Liposomes | 5 | 250 | 415 | 325 |
| 563 | Lipid bilayers | 5 | 250 | 355 | 294 |
| 565 | Marine Geology | 3 | 249 | 579 | 289 |
| 565 | Petroleum Geology | 3 | 249 | 490 | 280 |
| 567 | Holistic Health | 8 | 248 | 179 | 128 |
| 567 | allied health | 8 | 248 | 111 | 93 |
| 567 | Heterocyclic compounds | 51 | 248 | 71 | 255 |
| 570 | Documentation | 2 | 247 | 349 | 117 |
| 571 | international trade | 9 | 245 | 305 | 299 |
| 572 | Feminism | 8 | 244 | 320 | 201 |
| 572 | Primary health care | 9 | 244 | 827 | 753 |
| 572 | Nitric oxide | 7 | 244 | 78 | 107 |
| 575 | Cognitive Psychology | 10 | 243 | 161 | 155 |
| 575 | Ceramic materials | 10 | 243 | 682 | 669 |
| 577 | pain management | 3 | 242 | 536 | 271 |
| 578 | Telecommunication Systems | 3 | 241 | 1617 | 701 |
| 578 | Hypertension | 4 | 241 | 979 | 949 |
| 578 | Combinatorial analysis | 30 | 241 | 214 | 316 |
| 581 | Communication | 10 | 240 | 1105 | 1117 |
| 582 | Adolescent | 10 | 238 | 1012 | 1037 |
| 582 | atmospheric models | 4 | 238 | 485 | 441 |
| 584 | Physical Geography | 6 | 236 | 307 | 226 |
| 585 | drug development | 2 | 235 | 980 | 713 |
| 586 | Reading | 9 | 233 | 315 | 304 |
| 587 | Strategic planning | 3 | 230 | 792 | 428 |
| 588 | Nationalism | 15 | 228 | 67 | 74 |
| 588 | Synaptic Transmission | 5 | 228 | 326 | 280 |
| 590 | Chemical analysis | 6 | 227 | 767 | 673 |
| 591 | Neural circuitry | 6 | 226 | 1482 | 1326 |
| 591 | Learning disabilities | 14 | 226 | 315 | 419 |
| 591 | Medical innovations | 1 | 226 | 1246 | 799 |
| 594 | crime | 8 | 225 | 401 | 316 |
| 595 | adolescence | 6 | 222 | 615 | 552 |
| 596 | Geopolitics | 9 | 220 | 81 | 85 |
| 597 | Hormones | 9 | 219 | 656 | 765 |
| 598 | warfare | 5 | 218 | 189 | 184 |
| 599 | civilization | 89 | 216 | 51 | 117 |
| 600 | Political Sociology | 10 | 215 | 206 | 245 |
| 601 | Plant Genetics | 2 | 214 | 753 | 547 |
| 601 | Landscape Ecology | 6 | 214 | 294 | 313 |
| 601 | Sensor Networks | 3 | 214 | 263 | 81 |
| 604 | Plant breeding | 10 | 213 | 316 | 394 |
| 604 | Latin America | 73 | 213 | 112 | 334 |
| 606 | Global Health | 20 | 212 | 230 | 405 |
| 606 | War | 22 | 212 | 14 | 45 |
| 606 | Performance | 7 | 212 | 155 | 184 |
| 609 | Magnetic Resonance Imaging | 4 | 210 | 333 | 212 |
| 609 | population policy | 7 | 210 | 65 | 59 |
| 611 | drug addiction | 7 | 209 | 630 | 685 |
| 612 | Organizational Behavior | 8 | 208 | 317 | 488 |
| 612 | Signal Processing | 9 | 208 | 1488 | 1578 |
| 612 | Gene expression regulation | 4 | 208 | 738 | 579 |
| 615 | Lipids | 9 | 207 | 661 | 898 |
| 615 | Population Dynamics | 7 | 207 | 62 | 85 |
| 617 | national security | 14 | 206 | 87 | 58 |
| 617 | educational innovations | 2 | 206 | 676 | 290 |
| 619 | cosmic rays | 8 | 205 | 222 | 185 |
| 620 | Theology | 113 | 204 | 20 | 45 |
| 621 | mutation | 10 | 203 | 212 | 406 |
| 621 | Nonprofit organizations | 10 | 203 | 113 | 173 |
| 623 | Biotelemetry | 7 | 202 | 18 | 25 |
| 623 | Sovereignty | 8 | 202 | 25 | 47 |
| 623 | Gender identity | 9 | 202 | 90 | 68 |
| 623 | health services | 11 | 202 | 430 | 518 |
| 623 | women | 12 | 202 | 311 | 247 |
| 628 | Mechanical Engineering | 3 | 201 | 2287 | 1141 |
| 628 | Automation | 15 | 201 | 1017 | 1478 |
| 628 | Ecosystem management | 5 | 201 | 473 | 402 |
| 631 | behavior modification | 1 | 200 | 575 | 329 |
| 632 | eugenics | 10 | 199 | 208 | 264 |
| 633 | Language Disorders | 4 | 197 | 700 | 469 |
| 633 | Behavioral Genetics | 3 | 197 | 226 | 178 |
| 633 | Technological Innovations | 5 | 197 | 782 | 640 |
| 633 | Writing | 4 | 197 | 233 | 154 |
| 637 | Classical Philology | 25 | 196 | 27 | 23 |
| 637 | Morphology | 4 | 196 | 757 | 393 |
| 637 | Forecasting | 9 | 196 | 205 | 276 |
| 640 | Ceramics | 7 | 195 | 945 | 738 |
| 640 | Nuclear Chemistry | 13 | 195 | 447 | 434 |
| 640 | Heterocyclic chemistry | 46 | 195 | 24 | 84 |
| 640 | Glass | 7 | 195 | 638 | 627 |
| 640 | pottery | 7 | 195 | 612 | 614 |
| 645 | Research methodology | 1 | 194 | 205 | 66 |
| 645 | Radio | 11 | 194 | 699 | 915 |
| 647 | War and Society | 4 | 193 | 163 | 165 |
| 647 | innovation | 4 | 193 | 510 | 596 |
| 647 | California | 8 | 193 | 192 | 197 |
| 650 | RNA | 4 | 192 | 403 | 385 |
| 651 | Radioisotopes | 14 | 191 | 401 | 435 |
| 651 | Microscopy | 13 | 191 | 553 | 649 |
| 653 | soil conservation | 5 | 190 | 561 | 480 |
| 653 | Socialization | 4 | 190 | 455 | 422 |
| 653 | Composite Materials | 6 | 190 | 1824 | 1899 |
| 656 | thinking | 9 | 189 | 89 | 152 |
| 657 | Operations Research | 10 | 188 | 1268 | 1389 |
| 657 | Proteome | 6 | 188 | 708 | 779 |
| 657 | Oxidation-reduction | 3 | 188 | 739 | 759 |
| 660 | Oxidative stress | 4 | 187 | 685 | 844 |
| 661 | Electrical Engineering | 34 | 186 | 959 | 1458 |
| 661 | Environmental Economics | 9 | 186 | 119 | 179 |
| 661 | Human Resources | 3 | 186 | 460 | 384 |
| 664 | Social Networks | 1 | 184 | 647 | 180 |
| 664 | Online social networks | 1 | 184 | 623 | 116 |
| 666 | Ultrasonics | 3 | 183 | 1196 | 940 |
| 667 | Obstetrics | 8 | 182 | 1203 | 1202 |
| 667 | Carbohydrates | 7 | 182 | 222 | 295 |
| 667 | Developed countries | 3 | 182 | 215 | 150 |
| 670 | Risk Management | 4 | 181 | 521 | 374 |
| 671 | Demographic analysis | 5 | 180 | 4 | 11 |
| 672 | Sonochemistry | 2 | 179 | 815 | 624 |
| 673 | Prospecting | 5 | 177 | 35 | 14 |
| 674 | Economic Geography | 11 | 176 | 124 | 205 |
| 674 | Pharmacognosy | 6 | 176 | 1277 | 1399 |
| 674 | Development | 12 | 176 | 287 | 614 |
| 674 | Aggression | 9 | 176 | 219 | 379 |
| 678 | Multivariate Analysis | 13 | 175 | 192 | 310 |
| 678 | Plant genetic engineering | 4 | 175 | 688 | 671 |
| 680 | Game Theory | 5 | 174 | 411 | 293 |
| 680 | ethnicity | 13 | 174 | 236 | 269 |
| 680 | Geobiology | 7 | 174 | 241 | 283 |
| 683 | Music | 3 | 173 | 888 | 367 |
| 683 | mass transfer | 9 | 173 | 1026 | 1243 |
| 683 | Culture | 25 | 173 | 252 | 436 |
| 686 | Molecular Pharmacology | 3 | 172 | 754 | 650 |
| 687 | drug resistance | 3 | 171 | 659 | 458 |
| 687 | pollutants | 3 | 171 | 1748 | 1464 |
| 687 | Environmental pollutants | 3 | 171 | 2047 | 1665 |
| 690 | Environmental Geology | 4 | 170 | 1376 | 1134 |
| 690 | marketing | 12 | 170 | 992 | 1416 |
| 690 | Decision making | 13 | 170 | 566 | 914 |
| 693 | Social Ethics | 17 | 168 | 15 | 38 |
| 693 | Microwaves | 7 | 168 | 870 | 698 |
| 695 | Criminal psychology | 7 | 167 | 491 | 491 |
| 696 | radar | 6 | 166 | 89 | 65 |
| 696 | Sonar | 6 | 166 | 78 | 57 |
| 696 | Work | 2 | 166 | 448 | 195 |
| 696 | Navigation | 9 | 166 | 108 | 84 |
| 700 | Criminology | 11 | 165 | 485 | 527 |
| 700 | Ocean Engineering | 5 | 165 | 1246 | 1146 |
| 700 | Investment analysis | 8 | 165 | 480 | 552 |
| 703 | Political Geography | 12 | 164 | 103 | 194 |
| 703 | Palliative Care | 5 | 164 | 538 | 399 |
| 703 | Job satisfaction | 1 | 164 | 225 | 134 |
| 703 | job stress | 1 | 164 | 225 | 134 |
| 707 | civil service | 10 | 163 | 149 | 244 |
| 708 | older people | 9 | 161 | 840 | 710 |
| 709 | Climate Change Mitigation | 2 | 160 | 51 | 70 |
| 709 | Global warming | 2 | 160 | 191 | 77 |
| 709 | heredity | 8 | 160 | 345 | 368 |
| 709 | sea level | 2 | 160 | 51 | 70 |
| 713 | Cytoskeleton | 8 | 158 | 126 | 198 |
| 714 | Drug delivery systems | 2 | 157 | 1735 | 1234 |
| 715 | glycoproteins | 5 | 156 | 304 | 330 |
| 715 | cell movement | 7 | 156 | 109 | 212 |
| 715 | Glycoconjugates | 5 | 156 | 304 | 330 |
| 715 | glycolipids | 5 | 156 | 304 | 330 |
| 719 | auditory perception | 1 | 155 | 691 | 326 |
| 719 | Social welfare | 4 | 155 | 473 | 300 |
| 721 | Ecohydrology | 2 | 154 | 473 | 194 |
| 722 | Social work | 3 | 153 | 1292 | 735 |
| 723 | Feminist theory | 8 | 152 | 78 | 91 |
| 724 | Radiopharmaceuticals | 11 | 151 | 109 | 78 |
| 725 | Fishery management | 7 | 149 | 441 | 457 |
| 725 | urban forestry | 1 | 149 | 553 | 141 |
| 727 | economic conditions | 11 | 147 | 188 | 383 |
| 728 | Experimental Psychology | 8 | 145 | 343 | 434 |
| 728 | Quantum Computing | 3 | 145 | 171 | 141 |
| 728 | Nuclear Fusion | 4 | 145 | 458 | 321 |
| 731 | Computer-Aided Design | 5 | 144 | 917 | 789 |
| 731 | Minerals | 10 | 144 | 278 | 509 |
| 733 | Behavioral research | 7 | 142 | 278 | 217 |
| 733 | Volcanoes | 5 | 142 | 203 | 219 |
| 733 | Japan | 8 | 142 | 991 | 1005 |
| 736 | preimplantation genetic diagnosis | 6 | 141 | 236 | 259 |
| 736 | embryo transfer | 6 | 141 | 250 | 270 |
| 736 | Optoelectronic devices | 14 | 141 | 307 | 403 |
| 736 | disease outbreaks | 2 | 141 | 537 | 418 |
| 736 | Epidemics | 2 | 141 | 523 | 415 |
| 741 | Reproductive health | 6 | 140 | 452 | 483 |
| 741 | Surface properties | 1 | 140 | 1741 | 1094 |
| 741 | world | 9 | 140 | 329 | 728 |
| 744 | Physical Therapy | 3 | 139 | 1154 | 897 |
| 744 | Histochemistry | 5 | 139 | 745 | 678 |
| 744 | Pregnancy | 5 | 139 | 574 | 524 |
| 747 | Oligosaccharide | 4 | 138 | 225 | 283 |
| 748 | Biological Systems | 5 | 137 | 349 | 387 |
| 748 | Yeast | 2 | 137 | 500 | 350 |
| 750 | Health | 8 | 136 | 1167 | 1364 |
| 751 | Marine Meteorology | 6 | 135 | 215 | 246 |
| 752 | Ergonomics | 2 | 134 | 1039 | 593 |
| 752 | Health insurance | 4 | 134 | 317 | 290 |
| 752 | Physical fitness | 3 | 134 | 980 | 774 |
| 752 | Information society | 2 | 134 | 199 | 74 |
| 752 | Autism | 5 | 134 | 482 | 590 |
| 757 | social science | 1 | 133 | 321 | 186 |
| 757 | Liver diseases | 1 | 133 | 1364 | 1034 |
| 759 | cell membrane | 6 | 131 | 380 | 506 |
| 760 | sustainability | 4 | 130 | 717 | 810 |
| 761 | Bioenergetics | 5 | 129 | 599 | 728 |
| 761 | Energy metabolism | 5 | 129 | 419 | 528 |
| 763 | particles | 3 | 128 | 1026 | 723 |
| 764 | Crime prevention | 4 | 127 | 200 | 132 |
| 765 | Internet of Things | 1 | 126 | 1578 | 966 |
| 765 | psychopathology | 6 | 126 | 207 | 294 |
| 767 | Graph Theory | 9 | 125 | 372 | 336 |
| 767 | Neurosurgery | 3 | 125 | 810 | 707 |
| 767 | Applied Linguistics | 3 | 125 | 642 | 347 |
| 767 | Identity | 2 | 125 | 172 | 118 |
| 767 | Detectors | 4 | 125 | 1308 | 1137 |
| 767 | Self | 2 | 125 | 242 | 148 |
| 773 | Number Theory | 11 | 124 | 377 | 276 |
| 774 | Probability | 4 | 123 | 477 | 430 |
| 774 | Steroids | 3 | 123 | 836 | 702 |
| 776 | Lipid metabolism | 5 | 122 | 257 | 412 |
| 776 | regional security | 9 | 122 | 8 | 19 |
| 776 | European integration | 8 | 122 | 106 | 172 |
| 776 | Lipid | 5 | 122 | 257 | 413 |
| 776 | regional cooperation | 9 | 122 | 8 | 19 |
| 776 | European Economic Community | 8 | 122 | 106 | 172 |
| 782 | Higher Education | 5 | 121 | 451 | 396 |
| 782 | Antioxidants | 3 | 121 | 694 | 801 |
| 782 | Parasitology | 8 | 121 | 1361 | 1564 |
| 785 | Database Management | 3 | 120 | 743 | 605 |
| 785 | Cartography | 1 | 120 | 828 | 200 |
| 785 | Substance Abuse | 14 | 120 | 560 | 958 |
| 788 | police psychology | 1 | 119 | 218 | 25 |
| 789 | Literature | 69 | 118 | 61 | 59 |
| 789 | Migration | 4 | 118 | 120 | 50 |
| 789 | Dementia | 12 | 118 | 634 | 704 |
| 789 | Alzheimer's disease | 12 | 118 | 627 | 754 |
| 793 | Kinetics | 6 | 117 | 287 | 308 |
| 793 | Databases | 1 | 117 | 579 | 292 |
| 793 | Structural biology | 2 | 117 | 79 | 57 |
| 793 | Chemical kinetics | 7 | 117 | 431 | 320 |
| 793 | Financial management | 3 | 117 | 449 | 471 |
| 793 | Risk | 3 | 117 | 493 | 464 |
| 793 | Renaissance | 24 | 117 | 16 | 17 |
| 800 | Fire ecology | 1 | 116 | 133 | 65 |
| 800 | Teaching | 26 | 116 | 467 | 1205 |
| 802 | Socioeconomic Factors | 4 | 115 | 617 | 645 |
| 803 | economic forecasting | 4 | 114 | 243 | 285 |
| 804 | Chemical Oceanography | 2 | 113 | 325 | 315 |
| 805 | Differential Equations | 3 | 112 | 1068 | 700 |
| 805 | local government | 2 | 112 | 433 | 291 |
| 805 | Astrocytes | 1 | 112 | 634 | 528 |
| 808 | Social History | 19 | 110 | 122 | 222 |
| 809 | Cloud Computing | 5 | 109 | 191 | 300 |
| 809 | Raman spectroscopy | 8 | 109 | 420 | 642 |
| 809 | Germany | 52 | 109 | 61 | 188 |
| 812 | Image Processing | 5 | 108 | 1671 | 1762 |
| 812 | Feasibility studies | 13 | 108 | 72 | 91 |
| 812 | Culture techniques | 2 | 108 | 336 | 204 |
| 815 | Happiness | 3 | 107 | 434 | 430 |
| 816 | Industrial Engineering | 2 | 106 | 1956 | 1490 |
| 816 | Military History | 7 | 106 | 6 | 2 |
| 816 | Social Movements | 2 | 106 | 197 | 66 |
| 816 | Collective behavior | 2 | 106 | 109 | 62 |
| 816 | food contamination | 4 | 106 | 843 | 705 |
| 821 | infrared radiation | 10 | 105 | 234 | 340 |
| 822 | World History | 6 | 104 | 75 | 15 |
| 822 | Bipolar Disorder | 1 | 104 | 477 | 306 |
| 822 | Eastern Europe | 15 | 104 | 222 | 391 |
| 822 | Invertebrates | 9 | 104 | 260 | 457 |
| 822 | psychotherapy | 5 | 104 | 910 | 949 |
| 827 | Sound | 9 | 103 | 540 | 694 |
| 827 | land degradation | 3 | 103 | 480 | 486 |
| 827 | arthritis | 5 | 103 | 698 | 968 |
| 827 | degradation | 3 | 103 | 480 | 486 |
| 831 | Urban Areas | 1 | 102 | 466 | 147 |
| 831 | plankton | 3 | 102 | 180 | 167 |
| 833 | Retina | 1 | 101 | 282 | 356 |
| 833 | eye | 1 | 101 | 339 | 371 |
| 833 | Chemical structure | 9 | 101 | 176 | 250 |
| 833 | child abuse | 2 | 101 | 916 | 792 |
| 833 | Metals | 5 | 101 | 1533 | 1567 |
| 838 | Middle Ages | 27 | 100 | 7 | 30 |
| 839 | Biotransformation | 2 | 99 | 160 | 53 |
| 839 | Radio waves | 4 | 99 | 710 | 772 |
| 839 | biological invasions | 3 | 99 | 590 | 582 |
| 842 | Medical Physics | 7 | 98 | 938 | 1263 |
| 842 | Biomolecules | 1 | 98 | 760 | 527 |
| 842 | strategy | 13 | 98 | 43 | 71 |
| 842 | Structure-activity relationship | 1 | 98 | 485 | 229 |
| 846 | Energy Harvesting | 3 | 97 | 430 | 627 |
| 847 | Economic Thought | 3 | 95 | 299 | 401 |
| 847 | Waste management | 3 | 95 | 1379 | 1115 |
| 847 | isomerism | 2 | 95 | 420 | 228 |
| 847 | Chirality | 2 | 95 | 420 | 228 |
| 851 | Flexible electronics | 2 | 94 | 94 | 119 |
| 851 | Mental Health Services | 8 | 94 | 606 | 940 |
| 853 | Computational Complexity | 7 | 93 | 643 | 691 |
| 854 | Psychoanalysis | 6 | 92 | 224 | 140 |
| 854 | infrared technology | 8 | 92 | 91 | 70 |
| 856 | Labor Economics | 6 | 91 | 315 | 428 |
| 856 | Stem cells | 4 | 91 | 982 | 1155 |
| 856 | Cerebrospinal fluid | 1 | 91 | 230 | 138 |
| 856 | cloning | 4 | 91 | 470 | 697 |
| 860 | Electron Microscopy | 2 | 90 | 492 | 318 |
| 860 | Southern states | 1 | 90 | 535 | 125 |
| 860 | Money | 9 | 90 | 85 | 427 |
| 863 | Medicinal plants | 2 | 89 | 1587 | 1485 |
| 863 | blood transfusion | 3 | 89 | 499 | 413 |
| 863 | United Nations | 5 | 89 | 16 | 22 |
| 866 | Environmental Psychology | 6 | 87 | 200 | 515 |
| 866 | hospice care | 2 | 87 | 616 | 390 |
| 866 | Thin Films | 6 | 87 | 303 | 354 |
| 866 | soil pollution | 2 | 87 | 724 | 483 |
| 866 | Recycling | 1 | 87 | 1024 | 992 |
| 871 | Plant Biotechnology | 1 | 86 | 1208 | 751 |
| 871 | Social perception | 1 | 86 | 242 | 171 |
| 873 | Solitons | 3 | 85 | 1247 | 1098 |
| 873 | Fractals | 3 | 85 | 1254 | 1101 |
| 873 | Chaos | 3 | 85 | 1247 | 1098 |
| 873 | vitamin C | 1 | 85 | 702 | 503 |
| 873 | vitamin E | 1 | 85 | 702 | 503 |
| 873 | Birth control | 5 | 85 | 277 | 448 |
| 879 | Humanities | 13 | 84 | 669 | 1159 |
| 879 | Cybernetics | 2 | 84 | 1759 | 1471 |
| 879 | poverty | 4 | 84 | 290 | 363 |
| 879 | environmental exposure | 3 | 84 | 1783 | 1916 |
| 879 | Parasites | 5 | 84 | 1175 | 1319 |
| 884 | Historical Geography | 20 | 83 | 34 | 65 |
| 884 | History of Medicine | 19 | 83 | 121 | 163 |
| 884 | Schizophrenia | 1 | 83 | 1168 | 922 |
| 884 | Corporate Social Responsibility | 3 | 83 | 276 | 529 |
| 884 | environmental auditing | 3 | 83 | 289 | 533 |
| 889 | community development | 6 | 82 | 364 | 545 |
| 889 | Logic Programming | 8 | 82 | 154 | 198 |
| 889 | disease vectors | 2 | 82 | 1065 | 913 |
| 889 | Building | 2 | 82 | 671 | 416 |
| 893 | Political Ecology | 6 | 81 | 23 | 30 |
| 893 | Shock Waves | 4 | 81 | 130 | 126 |
| 893 | Mechanics | 10 | 81 | 670 | 1009 |
| 893 | freshwater biology | 5 | 81 | 652 | 859 |
| 897 | Interferons | 1 | 80 | 477 | 277 |
| 897 | cytokines | 1 | 80 | 1590 | 1228 |
| 897 | Approximation Theory | 7 | 80 | 272 | 303 |
| 897 | Cytokine | 1 | 80 | 625 | 525 |
| 901 | Pharmacy | 6 | 79 | 1356 | 1826 |
| 902 | Eating Disorders | 3 | 78 | 761 | 779 |
| 902 | brain mapping | 5 | 78 | 449 | 690 |
| 904 | Neuroplasticity | 1 | 77 | 504 | 338 |
| 904 | neuronal plasticity | 1 | 77 | 232 | 201 |
| 906 | Developmental Genetics | 1 | 76 | 633 | 618 |
| 906 | Classification | 4 | 76 | 191 | 243 |
| 906 | viral genetics | 1 | 76 | 387 | 491 |
| 909 | Functional equations | 8 | 75 | 70 | 86 |
| 909 | Risk assessment | 2 | 75 | 811 | 548 |
| 909 | Parallel Processing | 4 | 75 | 376 | 531 |
| 909 | ecological risk assessment | 2 | 75 | 322 | 253 |
| 909 | Health Risk Assessment | 2 | 75 | 592 | 409 |
| 909 | Insects | 3 | 75 | 1357 | 1172 |
| 915 | Soil biology | 1 | 73 | 1229 | 1108 |
| 915 | Calorimetry | 3 | 73 | 1256 | 1088 |
| 915 | Futures | 5 | 73 | 215 | 287 |
| 915 | Thermal analysis | 3 | 73 | 1256 | 1088 |
| 919 | Urban Economics | 1 | 72 | 589 | 447 |
| 919 | Computational Linguistics | 4 | 72 | 438 | 339 |
| 919 | Marine Geophysics | 2 | 72 | 323 | 205 |
| 919 | Applied Ethics | 7 | 72 | 52 | 83 |
| 919 | urban population | 1 | 72 | 380 | 338 |
| 924 | Sustainable agriculture | 3 | 71 | 690 | 749 |
| 924 | Plastics | 5 | 71 | 1284 | 1461 |
| 926 | Philosophy of Mind | 9 | 70 | 91 | 239 |
| 926 | Micropaleontology | 4 | 70 | 81 | 81 |
| 926 | Psychometrics | 3 | 70 | 434 | 449 |
| 926 | Corporate governance | 2 | 70 | 786 | 758 |
| 926 | software | 5 | 70 | 778 | 1236 |
| 931 | Transgenic plants | 2 | 69 | 496 | 557 |
| 931 | forestry | 2 | 69 | 269 | 238 |
| 931 | coal | 2 | 69 | 1802 | 1873 |
| 934 | Thrombosis | 2 | 68 | 954 | 896 |
| 934 | sports administration | 2 | 68 | 408 | 312 |
| 934 | civil war | 11 | 68 | 5 | 21 |
| 934 | Chronic diseases | 3 | 68 | 533 | 683 |
| 938 | Development Economics | 3 | 67 | 418 | 415 |
| 938 | Ecophysiology | 1 | 67 | 461 | 261 |
| 938 | healthcare disparities | 2 | 67 | 586 | 497 |
| 938 | vascular diseases | 1 | 67 | 876 | 758 |
| 938 | Tropical Medicine | 4 | 67 | 1390 | 1500 |
| 943 | behavior therapy | 5 | 66 | 595 | 827 |
| 943 | mental processes | 7 | 66 | 197 | 320 |
| 945 | Hematology | 3 | 65 | 1437 | 1565 |
| 945 | Signal Transduction | 3 | 65 | 1242 | 1486 |
| 945 | insurgency | 6 | 65 | 13 | 22 |
| 945 | Antibodies | 5 | 65 | 389 | 548 |
| 945 | Antigens | 5 | 65 | 514 | 698 |
| 945 | electron paramagnetic resonance | 6 | 65 | 1 | 1 |
| 945 | Electron spin resonance spectroscopy | 6 | 65 | 1 | 1 |
| 952 | Rheumatology | 3 | 64 | 904 | 1001 |
| 952 | Psychoneuroimmunology | 1 | 64 | 853 | 810 |
| 952 | Neuroimmunology | 1 | 64 | 951 | 881 |
| 952 | Flood forecasting | 1 | 64 | 248 | 138 |
| 952 | International security | 2 | 64 | 259 | 327 |
| 952 | Flood control | 1 | 64 | 556 | 236 |
| 952 | Islam | 14 | 64 | 91 | 300 |
| 952 | Antarctica | 4 | 64 | 427 | 451 |
| 952 | environmental issues | 4 | 64 | 319 | 568 |
| 961 | Planetary Science | 5 | 63 | 354 | 429 |
| 961 | Bioacoustics | 7 | 63 | 23 | 83 |
| 961 | Cognitive Therapy | 3 | 63 | 606 | 646 |
| 961 | complementary therapies | 5 | 63 | 1244 | 1739 |
| 961 | Developmental Neurobiology | 2 | 63 | 667 | 554 |
| 961 | Social policy | 8 | 63 | 573 | 933 |
| 961 | Granular materials | 1 | 63 | 1056 | 781 |
| 968 | Geriatric Medicine | 1 | 62 | 322 | 200 |
| 968 | Immunohematology | 1 | 62 | 127 | 14 |
| 968 | Blood group antigens | 1 | 62 | 114 | 13 |
| 968 | Algal blooms | 3 | 62 | 261 | 402 |
| 968 | Cyanobacteria | 3 | 62 | 261 | 402 |
| 968 | microalgae | 3 | 62 | 261 | 402 |
| 974 | Clinical Trials | 2 | 61 | 548 | 422 |
| 974 | Quality Control | 3 | 61 | 1670 | 1876 |
| 974 | health behavior | 2 | 61 | 978 | 941 |
| 974 | Wetland ecology | 1 | 61 | 830 | 479 |
| 974 | Sociobiology | 5 | 61 | 142 | 239 |
| 974 | wetland management | 1 | 61 | 360 | 197 |
| 974 | Spain | 42 | 61 | 40 | 112 |
| 974 | Exercise | 5 | 61 | 1106 | 1344 |
| 982 | Biochemical Genetics | 2 | 60 | 582 | 296 |
| 982 | New Testament | 24 | 60 | 11 | 13 |
| 982 | Trace elements | 2 | 60 | 359 | 435 |
| 985 | Software Engineering | 5 | 59 | 774 | 998 |
| 985 | Counseling Psychology | 4 | 59 | 191 | 316 |
| 985 | Aesthetics | 15 | 59 | 26 | 68 |
| 985 | Solar Energy | 3 | 59 | 1683 | 2120 |
| 985 | Nuclear non-proliferation | 1 | 59 | 98 | 107 |
| 985 | Cell cycle | 6 | 59 | 155 | 363 |
| 985 | cell proliferation | 6 | 59 | 182 | 385 |
| 985 | Capitalism | 3 | 59 | 167 | 173 |
| 993 | Audiology | 1 | 58 | 997 | 742 |
| 993 | Communism | 5 | 58 | 70 | 125 |
| 993 | actuators | 2 | 58 | 2270 | 2348 |
| 993 | Elderly | 3 | 58 | 1132 | 760 |
| 993 | Mineral resources | 4 | 58 | 505 | 926 |
| 993 | Chemical processes | 3 | 58 | 561 | 576 |
| 993 | molecular design | 5 | 58 | 173 | 286 |
| 993 | transducers | 2 | 58 | 2270 | 2348 |