| 1 | Astrophysics | 630 | 35.4K | 320 | 338 |
| 2 | Spectrum analysis | 440 | 25.9K | 282 | 255 |
| 3 | Geophysics | 300 | 16.6K | 384 | 239 |
| 4 | Meteorology | 155 | 14.0K | 249 | 137 |
| 5 | Hydrometeorology | 24 | 12.1K | 43 | 3 |
| 6 | Physics | 136 | 12.0K | 2206 | 1614 |
| 7 | Astronomy | 314 | 10.4K | 443 | 533 |
| 8 | Ecology | 79 | 9.7K | 1494 | 715 |
| 9 | Biology | 157 | 8.9K | 1702 | 1726 |
| 10 | Climatology | 66 | 8.3K | 331 | 133 |
| 11 | Science | 108 | 8.3K | 2426 | 1903 |
| 12 | Atmospheric Physics | 154 | 8.0K | 187 | 146 |
| 13 | Planets | 125 | 7.8K | 264 | 169 |
| 14 | United States | 282 | 6.4K | 338 | 370 |
| 15 | Biochemistry | 191 | 6.3K | 1639 | 1547 |
| 16 | Atmospheric Chemistry | 87 | 5.5K | 172 | 164 |
| 17 | Environmental Health | 65 | 5.2K | 1224 | 674 |
| 18 | Wireless Communication Systems | 29 | 4.1K | 579 | 29 |
| 19 | Molecular Biology | 87 | 4.1K | 2137 | 1827 |
| 20 | Polymers | 41 | 4.1K | 1783 | 696 |
| 21 | Natural history | 21 | 4.0K | 1926 | 1746 |
| 22 | Psychology | 103 | 3.7K | 808 | 641 |
| 23 | Plastics | 32 | 3.4K | 399 | 39 |
| 24 | plasticity | 31 | 3.4K | 41 | 15 |
| 25 | Nuclear Physics | 111 | 3.4K | 1226 | 1040 |
| 26 | Chemistry | 102 | 3.3K | 2511 | 2401 |
| 27 | Evolution | 11 | 3.2K | 1176 | 325 |
| 28 | Medicine | 110 | 3.2K | 2420 | 2578 |
| 29 | Pollution | 40 | 3.1K | 1912 | 1220 |
| 30 | computer networks | 30 | 3.1K | 679 | 97 |
| 31 | Agriculture | 27 | 2.9K | 748 | 202 |
| 32 | biological evolution | 12 | 2.9K | 1217 | 448 |
| 33 | Statistical physics | 84 | 2.8K | 918 | 704 |
| 34 | air | 24 | 2.8K | 28 | 16 |
| 34 | Climate | 24 | 2.8K | 86 | 22 |
| 36 | Biotechnology | 69 | 2.7K | 1594 | 1461 |
| 37 | Microbiology | 65 | 2.7K | 1923 | 1810 |
| 38 | Social Psychology | 43 | 2.6K | 526 | 365 |
| 39 | Environmental Policy | 18 | 2.6K | 1480 | 536 |
| 40 | atmospheric models | 56 | 2.6K | 131 | 114 |
| 41 | Biocompatible Materials | 40 | 2.6K | 1300 | 965 |
| 42 | Environmental Engineering | 30 | 2.3K | 1366 | 731 |
| 43 | Economics | 42 | 2.2K | 1435 | 669 |
| 44 | Optics | 344 | 2.2K | 393 | 789 |
| 45 | Behavior | 51 | 2.2K | 746 | 705 |
| 46 | Technology | 53 | 2.1K | 1042 | 618 |
| 47 | Bioengineering | 53 | 2.1K | 1140 | 1218 |
| 48 | Research | 79 | 2.1K | 2360 | 2375 |
| 49 | Mathematics | 71 | 2.1K | 1818 | 955 |
| 50 | Environment | 37 | 2.0K | 1687 | 1683 |
| 51 | Child Development | 53 | 2.0K | 396 | 370 |
| 52 | Education | 62 | 1.9K | 817 | 483 |
| 53 | human behavior | 21 | 1.7K | 934 | 659 |
| 54 | Psychiatry | 50 | 1.7K | 1338 | 1276 |
| 55 | Statistics | 77 | 1.5K | 500 | 496 |
| 56 | vibration | 62 | 1.5K | 122 | 143 |
| 57 | Public Health | 44 | 1.4K | 1767 | 1542 |
| 58 | Sociology | 56 | 1.4K | 610 | 557 |
| 59 | Biophysics | 54 | 1.4K | 1938 | 1861 |
| 60 | Nanotechnology | 25 | 1.3K | 2349 | 1772 |
| 61 | ecosystem | 6 | 1.3K | 1136 | 363 |
| 62 | environmental pollution | 23 | 1.3K | 2067 | 1512 |
| 63 | sanitation | 16 | 1.3K | 773 | 636 |
| 64 | Immunology | 27 | 1.2K | 1768 | 1574 |
| 65 | Community Psychology | 31 | 1.2K | 95 | 111 |
| 66 | Geriatrics | 143 | 1.2K | 297 | 651 |
| 67 | Pharmaceutical Chemistry | 60 | 1.2K | 1010 | 1284 |
| 68 | Photography | 280 | 1.2K | 135 | 107 |
| 69 | Hydrology | 28 | 1.2K | 916 | 593 |
| 70 | Biogeography | 2 | 1.2K | 1375 | 328 |
| 71 | Schizophrenia | 40 | 1.1K | 260 | 322 |
| 72 | behavior modification | 51 | 1.1K | 55 | 104 |
| 73 | Neurology | 19 | 1.1K | 3014 | 2274 |
| 74 | Organic Chemistry | 56 | 1.1K | 884 | 1021 |
| 75 | Psychophysiology | 27 | 1.1K | 1167 | 1041 |
| 76 | Biomedical Engineering | 59 | 1.1K | 1192 | 1534 |
| 77 | Neurons | 3 | 1.1K | 801 | 539 |
| 78 | Gerontology | 129 | 1.1K | 180 | 333 |
| 79 | Substance Abuse | 27 | 1.1K | 455 | 283 |
| 80 | Community Psychiatry | 25 | 1.1K | 263 | 200 |
| 81 | Analytical Chemistry | 28 | 1.1K | 2010 | 1587 |
| 82 | Experimental Psychology | 3 | 1.0K | 635 | 134 |
| 83 | Bacteriology | 18 | 1.0K | 911 | 780 |
| 84 | Developmental Psychology | 28 | 1.0K | 293 | 315 |
| 85 | Information Technology | 26 | 1.0K | 705 | 368 |
| 86 | Aging | 125 | 1.0K | 323 | 784 |
| 87 | Cancer | 5 | 980 | 3719 | 1622 |
| 88 | Biometrics | 31 | 978 | 305 | 251 |
| 88 | Social behavior | 45 | 978 | 185 | 317 |
| 90 | Child psychology | 34 | 959 | 410 | 529 |
| 91 | Engineering | 18 | 943 | 2293 | 889 |
| 92 | Water | 18 | 941 | 1178 | 1062 |
| 93 | Genetics | 15 | 935 | 2315 | 1857 |
| 94 | Bioorganic chemistry | 46 | 930 | 753 | 977 |
| 95 | Materials Science | 18 | 906 | 2712 | 1874 |
| 96 | Public Administration | 19 | 903 | 548 | 237 |
| 97 | Public Policy | 35 | 895 | 395 | 390 |
| 98 | violence | 31 | 892 | 218 | 207 |
| 99 | Politics | 13 | 885 | 272 | 82 |
| 99 | government | 13 | 885 | 311 | 112 |
| 101 | brain mapping | 3 | 874 | 801 | 207 |
| 102 | Operations Research | 14 | 844 | 1252 | 675 |
| 103 | Biodiversity conservation | 8 | 828 | 1254 | 970 |
| 104 | Cytology | 20 | 823 | 2351 | 2381 |
| 104 | Cell Biology | 18 | 823 | 2366 | 2423 |
| 106 | Social Sciences | 49 | 822 | 809 | 650 |
| 107 | Neurophysiology | 14 | 816 | 1724 | 1404 |
| 108 | Health Policy | 36 | 791 | 610 | 631 |
| 108 | Environmental monitoring | 10 | 791 | 2772 | 1645 |
| 110 | water supply | 14 | 784 | 435 | 339 |
| 111 | Materials | 25 | 769 | 3065 | 2711 |
| 112 | behavior therapy | 41 | 753 | 187 | 265 |
| 113 | Social problems | 17 | 712 | 182 | 153 |
| 114 | Mental Disorders | 23 | 707 | 1370 | 1404 |
| 115 | Pediatrics | 13 | 706 | 1621 | 1271 |
| 115 | Structural dynamics | 29 | 706 | 269 | 352 |
| 117 | Animal Behavior | 21 | 698 | 768 | 843 |
| 118 | Geology | 13 | 695 | 1937 | 1204 |
| 119 | Hydraulic Engineering | 7 | 693 | 874 | 304 |
| 120 | Light | 11 | 674 | 562 | 637 |
| 121 | space environment | 15 | 665 | 89 | 49 |
| 122 | older people | 133 | 661 | 136 | 282 |
| 123 | Carbon | 2 | 659 | 1895 | 652 |
| 124 | Photonics | 9 | 658 | 1214 | 828 |
| 125 | Clinical Chemistry | 33 | 651 | 1010 | 1366 |
| 126 | Telecommunication Systems | 7 | 644 | 1238 | 278 |
| 127 | Sustainable Development | 10 | 643 | 1231 | 633 |
| 128 | Chemical structure | 73 | 640 | 8 | 22 |
| 129 | Differential Equations | 11 | 610 | 556 | 205 |
| 130 | Decision making | 10 | 601 | 841 | 428 |
| 131 | global environmental change | 9 | 600 | 508 | 345 |
| 132 | proteins | 12 | 588 | 1337 | 874 |
| 133 | Psychosomatic Medicine | 10 | 584 | 469 | 344 |
| 134 | Medical Anthropology | 18 | 581 | 465 | 562 |
| 135 | Growth | 18 | 573 | 574 | 780 |
| 136 | Clinical Psychology | 22 | 565 | 540 | 749 |
| 137 | Computational Biology | 20 | 562 | 1187 | 1168 |
| 138 | Teaching | 18 | 558 | 661 | 426 |
| 139 | miniaturization | 7 | 556 | 1494 | 1039 |
| 140 | Artificial Intelligence | 67 | 554 | 731 | 1443 |
| 141 | Microelectronics | 6 | 549 | 1646 | 919 |
| 142 | Ethology | 17 | 546 | 685 | 831 |
| 143 | Geography | 13 | 544 | 1323 | 875 |
| 143 | Reading | 1 | 544 | 1009 | 143 |
| 143 | Social work | 36 | 544 | 330 | 313 |
| 146 | Genetic engineering | 13 | 542 | 1217 | 1086 |
| 147 | Botany | 15 | 541 | 2401 | 2074 |
| 147 | intimate partner violence | 4 | 541 | 25 | 4 |
| 147 | spousal abuse | 4 | 541 | 25 | 4 |
| 150 | Natural resources | 5 | 535 | 655 | 270 |
| 151 | Agricultural Ecology | 7 | 527 | 849 | 576 |
| 152 | Hydrodynamics | 4 | 524 | 588 | 205 |
| 153 | Emergency Medicine | 8 | 520 | 1202 | 459 |
| 153 | Social policy | 15 | 520 | 399 | 206 |
| 155 | Robotics | 13 | 519 | 875 | 537 |
| 155 | Adolescent | 25 | 519 | 699 | 722 |
| 157 | environmental protection | 7 | 510 | 2993 | 1631 |
| 158 | nanoscience | 9 | 507 | 2110 | 1596 |
| 159 | Electronics | 17 | 490 | 1965 | 1336 |
| 159 | Virology | 11 | 490 | 2172 | 2404 |
| 161 | Earth Sciences | 23 | 488 | 1474 | 1493 |
| 162 | Plant physiology | 5 | 486 | 1993 | 1213 |
| 162 | child abuse | 15 | 486 | 325 | 348 |
| 164 | Signal Processing | 22 | 478 | 705 | 629 |
| 164 | Group decision making | 9 | 478 | 228 | 114 |
| 166 | Aquaculture | 1 | 476 | 2596 | 567 |
| 167 | Mechanical Engineering | 17 | 472 | 1321 | 707 |
| 168 | Freshwater invertebrates | 6 | 466 | 136 | 72 |
| 169 | Climate change | 3 | 465 | 1253 | 1035 |
| 169 | Eutrophication | 3 | 465 | 1190 | 1029 |
| 171 | Organizational Behavior | 3 | 464 | 652 | 291 |
| 172 | Educational Psychology | 10 | 452 | 822 | 573 |
| 173 | Quantum Gravity | 17 | 447 | 1284 | 1187 |
| 174 | Developmental Biology | 7 | 445 | 1700 | 1348 |
| 175 | behavioral medicine | 16 | 443 | 523 | 631 |
| 176 | Sleep | 8 | 442 | 1304 | 751 |
| 177 | alcoholism | 21 | 440 | 542 | 680 |
| 178 | Molecular Genetics | 12 | 438 | 1116 | 1122 |
| 179 | Animal ecology | 4 | 437 | 1215 | 543 |
| 180 | Neuropsychology | 11 | 436 | 1441 | 1167 |
| 181 | cryosphere | 9 | 435 | 239 | 192 |
| 182 | Zoology | 6 | 434 | 2384 | 1024 |
| 182 | Family | 21 | 434 | 295 | 312 |
| 184 | Information Science | 29 | 425 | 696 | 1115 |
| 185 | Environmental Law | 1 | 417 | 2268 | 771 |
| 186 | Molecular cloning | 11 | 407 | 830 | 626 |
| 186 | Genetic recombination | 11 | 407 | 818 | 617 |
| 186 | city planning | 12 | 407 | 873 | 586 |
| 186 | Recombinant DNA | 11 | 407 | 905 | 674 |
| 190 | Mental illness | 18 | 403 | 970 | 1327 |
| 191 | Social Issues | 9 | 392 | 100 | 78 |
| 192 | Hormones | 3 | 391 | 1637 | 744 |
| 193 | Radiation | 10 | 385 | 1477 | 885 |
| 194 | Bioinformatics | 15 | 383 | 1003 | 1102 |
| 195 | Developmental Genetics | 1 | 378 | 1046 | 532 |
| 195 | Environmental Management | 7 | 378 | 2367 | 1861 |
| 197 | Health | 8 | 373 | 1728 | 1081 |
| 198 | Health Education | 12 | 372 | 1055 | 771 |
| 199 | Population Genetics | 7 | 370 | 963 | 788 |
| 200 | Biomechanics | 9 | 360 | 928 | 714 |
| 201 | Dynamics | 20 | 357 | 733 | 579 |
| 201 | Molecular ecology | 6 | 357 | 919 | 801 |
| 203 | Numerical Analysis | 18 | 356 | 1139 | 910 |
| 204 | radiative transfer | 8 | 355 | 424 | 227 |
| 204 | Proteome | 6 | 355 | 1034 | 763 |
| 204 | Solar System | 16 | 355 | 459 | 530 |
| 207 | Plants | 7 | 350 | 1734 | 1275 |
| 208 | System analysis | 19 | 348 | 1065 | 1090 |
| 209 | China | 12 | 346 | 1752 | 1166 |
| 209 | Steroids | 2 | 346 | 1486 | 501 |
| 211 | Medical Laboratory Science | 11 | 344 | 1252 | 1260 |
| 212 | Socialization | 10 | 341 | 235 | 267 |
| 213 | mathematical analysis | 23 | 334 | 1197 | 974 |
| 214 | Political Science | 24 | 333 | 684 | 646 |
| 215 | Criminal psychology | 7 | 332 | 552 | 324 |
| 216 | Space telescopes | 24 | 329 | 27 | 53 |
| 216 | biological factors | 7 | 329 | 1540 | 998 |
| 218 | Sleep Disorders | 7 | 326 | 1384 | 891 |
| 219 | exobiology | 6 | 324 | 248 | 202 |
| 220 | drug development | 2 | 322 | 1684 | 1014 |
| 221 | Birds | 17 | 321 | 555 | 461 |
| 222 | Mental Health Services | 16 | 319 | 509 | 508 |
| 222 | Obesity | 7 | 319 | 1667 | 1432 |
| 222 | Geobiology | 3 | 319 | 565 | 188 |
| 225 | Plant cells | 6 | 318 | 957 | 1131 |
| 226 | sustainability | 7 | 316 | 500 | 464 |
| 227 | sex crimes | 18 | 315 | 177 | 210 |
| 227 | Metals | 5 | 315 | 2285 | 1248 |
| 229 | Medical innovations | 3 | 313 | 1336 | 1120 |
| 230 | pain | 9 | 312 | 959 | 926 |
| 231 | Catalysis | 13 | 310 | 2344 | 2570 |
| 231 | Economic Development | 12 | 310 | 923 | 1024 |
| 233 | nucleic acids | 18 | 309 | 854 | 1439 |
| 234 | drug addiction | 16 | 303 | 490 | 717 |
| 235 | Intelligent Transportation Systems | 16 | 302 | 218 | 208 |
| 236 | Solid State Physics | 15 | 301 | 2447 | 2304 |
| 237 | Soil Science | 2 | 300 | 2682 | 1153 |
| 238 | Urban Policy | 8 | 299 | 456 | 312 |
| 239 | Mental Health | 17 | 295 | 674 | 729 |
| 240 | Anthropology | 18 | 294 | 724 | 643 |
| 241 | Nanostructured Materials | 12 | 291 | 2100 | 2128 |
| 242 | Ornithology | 16 | 283 | 448 | 417 |
| 243 | Production Management | 3 | 280 | 1253 | 861 |
| 244 | Physiology | 5 | 277 | 4284 | 3067 |
| 244 | Brain | 9 | 277 | 1949 | 1965 |
| 246 | plant molecular biology | 5 | 276 | 1418 | 1258 |
| 247 | Biochemical Engineering | 8 | 275 | 2553 | 3094 |
| 247 | Quality of life | 4 | 275 | 1628 | 919 |
| 249 | Organizational change | 2 | 274 | 1056 | 288 |
| 250 | Oceanography | 8 | 269 | 1424 | 1199 |
| 250 | Nonlinear Dynamics | 11 | 269 | 1461 | 1345 |
| 252 | Marine Meteorology | 4 | 263 | 367 | 257 |
| 252 | Condensed Matter | 9 | 263 | 2740 | 2204 |
| 254 | Marine Biology | 9 | 261 | 1900 | 1740 |
| 255 | Chemical Engineering | 13 | 259 | 2988 | 3324 |
| 256 | Regional Planning | 10 | 258 | 973 | 786 |
| 257 | Thermodynamics | 29 | 257 | 238 | 389 |
| 258 | adolescence | 8 | 256 | 570 | 555 |
| 259 | Physical Chemistry | 11 | 255 | 1508 | 1544 |
| 260 | elder abuse | 12 | 253 | 104 | 132 |
| 260 | Optical materials | 4 | 253 | 2671 | 1956 |
| 260 | family violence | 12 | 253 | 163 | 200 |
| 260 | Cognition | 7 | 253 | 1302 | 1091 |
| 264 | genome | 7 | 251 | 1284 | 1460 |
| 265 | Health promotion | 7 | 249 | 1119 | 896 |
| 266 | Computer Science | 12 | 248 | 1184 | 844 |
| 266 | Medical genetics | 5 | 248 | 2819 | 2637 |
| 266 | Child welfare | 14 | 248 | 445 | 487 |
| 269 | Molecular structure | 13 | 244 | 1415 | 1574 |
| 270 | Pharmacology | 20 | 242 | 2958 | 4156 |
| 270 | Biodiversity | 5 | 242 | 2275 | 1565 |
| 272 | Toxicology | 19 | 240 | 2544 | 3745 |
| 273 | Human Geography | 10 | 234 | 635 | 522 |
| 274 | protein | 6 | 233 | 1097 | 881 |
| 275 | Mathematical Physics | 12 | 232 | 2026 | 1662 |
| 276 | Water pollution | 7 | 231 | 2227 | 2238 |
| 277 | Elderly | 103 | 230 | 131 | 348 |
| 278 | Mass Spectrometry | 11 | 228 | 729 | 795 |
| 278 | landscapes | 3 | 228 | 197 | 50 |
| 278 | polymerization | 5 | 228 | 3747 | 2644 |
| 281 | Image Processing | 4 | 227 | 2126 | 1317 |
| 282 | Hypertension | 1 | 225 | 3012 | 1713 |
| 282 | Hemodynamics | 1 | 225 | 1210 | 580 |
| 284 | economic policy | 14 | 223 | 1335 | 1065 |
| 285 | Perception | 6 | 222 | 1743 | 1452 |
| 286 | Geodesy | 4 | 219 | 782 | 339 |
| 287 | Genomics | 5 | 218 | 3368 | 2612 |
| 288 | Metallurgy | 5 | 217 | 2532 | 1570 |
| 288 | Happiness | 2 | 217 | 644 | 190 |
| 288 | urban forestry | 6 | 217 | 120 | 84 |
| 291 | Epidemiology | 11 | 215 | 2696 | 2918 |
| 292 | Nutrition | 4 | 212 | 5026 | 3585 |
| 292 | Human-Computer Interaction | 12 | 212 | 710 | 845 |
| 294 | Systems Engineering | 15 | 211 | 1009 | 1094 |
| 294 | Automation | 13 | 211 | 992 | 1203 |
| 294 | Physical organic chemistry | 13 | 211 | 734 | 869 |
| 297 | Nonlinear functional analysis | 9 | 210 | 739 | 632 |
| 298 | Linguistics | 10 | 209 | 948 | 650 |
| 298 | preventive medicine | 4 | 209 | 1447 | 1054 |
| 300 | Thermochemistry | 26 | 207 | 113 | 275 |
| 301 | race relations | 7 | 204 | 358 | 248 |
| 302 | internet | 9 | 202 | 688 | 584 |
| 302 | Aggression | 5 | 202 | 367 | 332 |
| 304 | Petroleum Engineering | 1 | 200 | 1459 | 433 |
| 304 | Microbial Ecology | 8 | 200 | 1744 | 2289 |
| 306 | Molecules | 14 | 199 | 875 | 962 |
| 306 | Breeding | 5 | 199 | 1118 | 879 |
| 308 | health services | 10 | 197 | 592 | 589 |
| 309 | Ophthalmology | 7 | 195 | 1518 | 1384 |
| 310 | Oncogenes | 1 | 192 | 2088 | 1429 |
| 310 | actuators | 5 | 192 | 2116 | 1880 |
| 310 | transducers | 5 | 192 | 2116 | 1880 |
| 313 | Wildlife conservation | 3 | 191 | 1451 | 1111 |
| 314 | Analytical Biochemistry | 3 | 190 | 2226 | 1284 |
| 314 | Bioinorganic chemistry | 7 | 190 | 1113 | 1021 |
| 316 | Social welfare | 8 | 189 | 327 | 247 |
| 317 | Economic History | 17 | 186 | 1876 | 1871 |
| 318 | Biosensors | 5 | 185 | 1169 | 1379 |
| 318 | Ocean Engineering | 11 | 185 | 1025 | 1198 |
| 320 | Mobile Computing | 14 | 184 | 400 | 499 |
| 320 | weather forecasting | 5 | 184 | 164 | 152 |
| 322 | Paleontology | 3 | 183 | 1562 | 830 |
| 323 | health behavior | 3 | 180 | 1188 | 684 |
| 324 | Engineering Mathematics | 7 | 179 | 2143 | 1284 |
| 324 | role | 4 | 179 | 366 | 335 |
| 326 | optical devices | 1 | 178 | 1008 | 220 |
| 327 | Electrophoresis | 3 | 177 | 2068 | 1284 |
| 328 | Special Education | 7 | 175 | 534 | 358 |
| 328 | plant communities | 4 | 175 | 1089 | 1056 |
| 330 | personality | 7 | 173 | 986 | 1181 |
| 331 | Emergency Medical Services | 6 | 169 | 608 | 370 |
| 331 | Control Theory | 5 | 169 | 1625 | 1048 |
| 333 | Structural optimization | 2 | 168 | 519 | 245 |
| 333 | machinery | 5 | 168 | 711 | 408 |
| 335 | Bioelectronics | 4 | 166 | 1128 | 1355 |
| 335 | Vision | 5 | 166 | 601 | 573 |
| 337 | Youth | 6 | 164 | 493 | 504 |
| 338 | School Psychology | 4 | 160 | 416 | 325 |
| 339 | management | 10 | 158 | 2272 | 2640 |
| 339 | enzymes | 7 | 158 | 1191 | 1411 |
| 341 | Computer Graphics | 11 | 157 | 958 | 1157 |
| 342 | Industrial Microbiology | 6 | 156 | 1683 | 1956 |
| 342 | Medical Physics | 6 | 156 | 1471 | 1346 |
| 344 | Geriatric Medicine | 2 | 154 | 216 | 86 |
| 344 | Developing countries | 9 | 154 | 1587 | 1740 |
| 346 | Comparative Physiology | 4 | 152 | 833 | 672 |
| 346 | Research Design | 5 | 152 | 1138 | 1002 |
| 348 | Smoking | 6 | 151 | 573 | 665 |
| 348 | Organelle biogenesis | 2 | 151 | 321 | 135 |
| 348 | Entomology | 4 | 151 | 2585 | 1525 |
| 351 | Geomorphology | 6 | 150 | 1171 | 1281 |
| 352 | Learning disabilities | 4 | 149 | 771 | 515 |
| 353 | Industry | 2 | 148 | 300 | 286 |
| 353 | Psychiatric hospitals | 6 | 148 | 237 | 227 |
| 355 | Clinical Trials | 4 | 146 | 555 | 364 |
| 355 | Ecosystem management | 3 | 146 | 801 | 586 |
| 355 | men | 2 | 146 | 455 | 135 |
| 355 | Radio | 2 | 146 | 1261 | 432 |
| 355 | Women's health | 8 | 146 | 865 | 931 |
| 360 | Tribology | 4 | 145 | 1273 | 873 |
| 360 | Mineralogy | 3 | 145 | 1661 | 1096 |
| 360 | Public Choice | 7 | 145 | 201 | 243 |
| 363 | Smart Materials | 8 | 141 | 590 | 647 |
| 363 | Post-traumatic stress disorder | 6 | 141 | 565 | 670 |
| 365 | drugs | 6 | 140 | 1999 | 1944 |
| 366 | Endocrinology | 4 | 138 | 3443 | 3338 |
| 366 | rehabilitation | 7 | 138 | 1784 | 1923 |
| 368 | Data Mining | 15 | 137 | 649 | 1423 |
| 368 | Sexuality | 4 | 137 | 262 | 122 |
| 370 | Origin of life | 1 | 136 | 336 | 93 |
| 371 | Artificial Organs | 2 | 135 | 1051 | 436 |
| 371 | Synthetic biology | 2 | 135 | 492 | 235 |
| 373 | data protection | 9 | 134 | 207 | 266 |
| 374 | Software Engineering | 7 | 133 | 776 | 642 |
| 374 | Physical Geography | 6 | 133 | 419 | 359 |
| 374 | Metabolism | 5 | 133 | 2871 | 3193 |
| 377 | health services accessibility | 3 | 131 | 1163 | 658 |
| 377 | Biomolecules | 1 | 131 | 994 | 513 |
| 377 | Structure-activity relationship | 1 | 131 | 1015 | 280 |
| 380 | school psychologists | 1 | 130 | 376 | 185 |
| 381 | Functional Analysis | 5 | 128 | 1220 | 911 |
| 381 | Information Systems | 15 | 128 | 551 | 1227 |
| 381 | Energy Policy | 6 | 128 | 2282 | 2965 |
| 381 | energy resources | 6 | 128 | 1096 | 1795 |
| 385 | counseling | 5 | 127 | 1191 | 1019 |
| 386 | Environmental Chemistry | 11 | 126 | 1284 | 2386 |
| 387 | Quantum Optics | 10 | 124 | 554 | 711 |
| 387 | Family Therapy | 6 | 124 | 551 | 478 |
| 387 | child mental health | 5 | 124 | 366 | 301 |
| 387 | libraries | 9 | 124 | 402 | 314 |
| 387 | Atomic spectroscopy | 10 | 124 | 745 | 963 |
| 387 | Laser Spectroscopy | 10 | 124 | 501 | 650 |
| 387 | Australia | 8 | 124 | 1361 | 1340 |
| 394 | environmental indicators | 3 | 123 | 1387 | 1248 |
| 395 | Urban Economics | 4 | 122 | 317 | 383 |
| 396 | Nervous system | 3 | 120 | 3122 | 2865 |
| 397 | Bifurcation Theory | 2 | 119 | 996 | 377 |
| 398 | psychotherapy | 6 | 118 | 1104 | 1221 |
| 399 | Molecular Microbiology | 4 | 116 | 895 | 1185 |
| 400 | Second Language Acquisition | 1 | 115 | 413 | 220 |
| 401 | Reproduction | 3 | 114 | 2891 | 2284 |
| 402 | natural disasters | 5 | 113 | 1229 | 1281 |
| 402 | environmental issues | 1 | 113 | 1002 | 415 |
| 404 | Detectors | 5 | 112 | 808 | 378 |
| 405 | Housing | 2 | 111 | 666 | 432 |
| 406 | Renewable Energy Sources | 2 | 110 | 3743 | 3436 |
| 407 | civil rights | 2 | 109 | 569 | 173 |
| 407 | Speech Disorders | 7 | 109 | 765 | 895 |
| 407 | sexual behavior | 2 | 109 | 975 | 632 |
| 410 | Plant Genetics | 1 | 108 | 1332 | 893 |
| 411 | Personality Assessment | 5 | 107 | 460 | 590 |
| 412 | Composite Materials | 7 | 106 | 2227 | 2919 |
| 412 | Public opinion | 2 | 106 | 603 | 389 |
| 412 | urban population | 2 | 106 | 335 | 340 |
| 415 | Sensor Networks | 6 | 105 | 126 | 149 |
| 415 | Business | 5 | 105 | 2080 | 2072 |
| 417 | Psychometrics | 1 | 104 | 806 | 416 |
| 417 | healthcare disparities | 8 | 104 | 272 | 375 |
| 417 | Electrochemistry | 11 | 104 | 2762 | 3436 |
| 417 | RNA | 4 | 104 | 522 | 649 |
| 421 | Cognitive neuroscience | 3 | 103 | 1100 | 1096 |
| 421 | biomedicine | 5 | 103 | 738 | 856 |
| 421 | Heterocyclic compounds | 5 | 103 | 963 | 601 |
| 424 | Learning | 4 | 100 | 1353 | 1336 |
| 425 | nuclear magnetic resonance spectroscopy | 4 | 99 | 814 | 634 |
| 425 | Sun | 4 | 99 | 445 | 422 |
| 425 | Immunity | 2 | 99 | 2830 | 2843 |
| 428 | Plant Ecology | 3 | 98 | 2059 | 2023 |
| 428 | Attention | 6 | 98 | 1622 | 2055 |
| 430 | Early Childhood Education | 7 | 97 | 368 | 382 |
| 430 | Molecular evolution | 5 | 97 | 1421 | 1864 |
| 430 | Nanostructures | 2 | 97 | 3259 | 2407 |
| 433 | Medical Technology | 6 | 96 | 1533 | 1942 |
| 433 | Biopharmaceutics | 4 | 96 | 1277 | 1387 |
| 433 | Pharmacokinetics | 6 | 96 | 752 | 1019 |
| 433 | Educational Anthropology | 2 | 96 | 154 | 65 |
| 433 | ethnicity | 7 | 96 | 434 | 419 |
| 433 | nucleotides | 11 | 96 | 156 | 170 |
| 439 | Biogeochemistry | 2 | 95 | 1585 | 1485 |
| 439 | feeding behavior | 6 | 95 | 586 | 862 |
| 439 | Intellectual disability | 7 | 95 | 593 | 760 |
| 442 | Green Chemistry | 2 | 94 | 2350 | 2195 |
| 442 | Sustainable Engineering | 2 | 94 | 2394 | 1895 |
| 442 | Development | 4 | 94 | 834 | 1003 |
| 442 | Economic Assistance | 4 | 94 | 719 | 909 |
| 446 | Political Psychology | 3 | 93 | 375 | 379 |
| 446 | analysis | 4 | 93 | 364 | 404 |
| 446 | Mechanics | 4 | 93 | 1460 | 1006 |
| 446 | health planning | 5 | 93 | 2096 | 2092 |
| 450 | Signal Transduction | 1 | 92 | 2673 | 1878 |
| 450 | Solid State Chemistry | 8 | 92 | 2001 | 2350 |
| 450 | Antioxidants | 1 | 92 | 1539 | 1212 |
| 450 | Hearing | 6 | 92 | 535 | 629 |
| 450 | Oxidation-reduction | 1 | 92 | 1549 | 1290 |
| 455 | Biomass Energy | 3 | 91 | 3025 | 3081 |
| 455 | Multivariate Analysis | 3 | 91 | 573 | 440 |
| 455 | nuclear magnetic resonance | 3 | 91 | 1347 | 1017 |
| 458 | Immunotherapy | 3 | 90 | 2405 | 2435 |
| 458 | Child | 8 | 90 | 1941 | 2536 |
| 458 | Adolescent Psychology | 4 | 90 | 824 | 869 |
| 461 | crime victims | 3 | 89 | 156 | 100 |
| 462 | Nanoparticles | 2 | 87 | 2715 | 2086 |
| 462 | Food | 6 | 87 | 2911 | 3685 |
| 462 | visualization | 13 | 87 | 773 | 738 |
| 465 | emergency management | 5 | 86 | 721 | 861 |
| 465 | Wetland ecology | 1 | 86 | 1054 | 448 |
| 465 | Wetland conservation | 1 | 86 | 765 | 307 |
| 465 | Wetlands | 1 | 86 | 778 | 308 |
| 469 | Marine Ecology | 5 | 85 | 682 | 712 |
| 469 | Continuing Education | 6 | 85 | 278 | 227 |
| 469 | Telecommunication | 9 | 85 | 1568 | 1813 |
| 469 | African Americans | 4 | 85 | 169 | 95 |
| 473 | Internet of Things | 5 | 84 | 568 | 524 |
| 473 | Cultural diversity | 4 | 84 | 148 | 214 |
| 473 | Appetite | 5 | 84 | 564 | 846 |
| 476 | Structural Engineering | 7 | 83 | 1392 | 1554 |
| 476 | Biogeochemical cycles | 2 | 83 | 648 | 794 |
| 478 | Neurobiology | 3 | 82 | 2141 | 2453 |
| 479 | Language Disorders | 5 | 81 | 752 | 795 |
| 479 | Structural design | 4 | 81 | 869 | 838 |
| 479 | Health Services Research | 7 | 81 | 1394 | 1824 |
| 479 | Urban Geography | 4 | 81 | 197 | 207 |
| 479 | Speech | 5 | 81 | 785 | 973 |
| 479 | African American | 3 | 81 | 140 | 80 |
| 485 | probabilities | 20 | 80 | 583 | 956 |
| 486 | drug abuse | 3 | 78 | 777 | 668 |
| 486 | extraterrestrial environment | 4 | 78 | 630 | 540 |
| 486 | astronomical phenomena | 4 | 78 | 570 | 492 |
| 489 | Philosophy | 11 | 76 | 1073 | 794 |
| 489 | Functional Genomics | 1 | 76 | 668 | 531 |
| 489 | Quantum theory | 4 | 76 | 1085 | 1003 |
| 492 | Occupational Therapy | 2 | 75 | 1622 | 710 |
| 492 | Occupational Health | 2 | 75 | 1865 | 1082 |
| 492 | Earthquake Engineering | 6 | 75 | 1060 | 1411 |
| 492 | Industrial Safety | 2 | 75 | 1859 | 1187 |
| 492 | industrial hygiene | 2 | 75 | 1858 | 869 |
| 492 | Psychoanalytic theory | 1 | 75 | 131 | 40 |
| 492 | Psychoanalysis | 1 | 75 | 802 | 211 |
| 492 | Social Media | 7 | 75 | 101 | 176 |
| 500 | medical education | 4 | 74 | 2167 | 1911 |
| 501 | Nuclear Engineering | 4 | 73 | 1359 | 987 |
| 501 | Nuclear Energy | 4 | 73 | 1200 | 937 |
| 501 | nuclear power | 4 | 73 | 533 | 340 |
| 504 | Engineering Geology | 1 | 72 | 2494 | 1640 |
| 504 | Distributed Databases | 1 | 72 | 364 | 161 |
| 504 | locomotion | 2 | 72 | 1020 | 779 |
| 504 | posture | 2 | 72 | 1020 | 779 |
| 504 | Porous materials | 1 | 72 | 1561 | 677 |
| 504 | radioactive waste | 1 | 72 | 1656 | 1506 |
| 504 | industrial waste | 1 | 72 | 1710 | 1511 |
| 504 | Hazardous waste | 1 | 72 | 1913 | 1595 |
| 504 | gait | 2 | 72 | 1020 | 779 |
| 504 | walking | 2 | 72 | 1020 | 779 |
| 514 | Technological Innovations | 5 | 70 | 873 | 1142 |
| 515 | peace | 4 | 69 | 451 | 544 |
| 515 | Sociobiology | 3 | 69 | 296 | 240 |
| 515 | language | 5 | 69 | 681 | 886 |
| 518 | Speech-Language Pathology | 1 | 68 | 623 | 296 |
| 518 | Transportation | 2 | 68 | 2334 | 1802 |
| 518 | automatic speech recognition | 1 | 68 | 363 | 184 |
| 521 | Patient education | 2 | 67 | 946 | 913 |
| 521 | world | 3 | 67 | 862 | 1228 |
| 523 | Conservation Biology | 3 | 66 | 1416 | 1599 |
| 523 | cardiac catheterization | 1 | 66 | 1533 | 899 |
| 523 | organization | 3 | 66 | 876 | 1004 |
| 523 | Trace elements | 1 | 66 | 651 | 454 |
| 527 | terrorism | 3 | 65 | 321 | 222 |
| 527 | viruses | 3 | 65 | 1850 | 2421 |
| 529 | Database Management | 6 | 64 | 646 | 954 |
| 529 | Nondestructive testing | 2 | 64 | 1062 | 729 |
| 529 | Information Retrieval | 5 | 64 | 381 | 619 |
| 529 | Diagnostic Imaging | 5 | 64 | 2144 | 2435 |
| 529 | Anxiety Disorders | 2 | 64 | 761 | 975 |
| 529 | Anxiety | 2 | 64 | 761 | 971 |
| 535 | Adolescent Medicine | 1 | 63 | 1373 | 1215 |
| 535 | Hospitals | 2 | 63 | 1098 | 863 |
| 537 | Public Health Administration | 1 | 62 | 867 | 351 |
| 537 | Labor Economics | 1 | 62 | 987 | 580 |
| 537 | Nanophotonics | 4 | 62 | 286 | 455 |
| 537 | Intelligent Control Systems | 4 | 62 | 1185 | 906 |
| 537 | Chromosome mapping | 2 | 62 | 2882 | 2875 |
| 537 | air quality | 1 | 62 | 672 | 284 |
| 537 | pollutants | 4 | 62 | 2066 | 2815 |
| 537 | Environmental pollutants | 4 | 62 | 2478 | 3218 |
| 537 | gene mapping | 2 | 62 | 3140 | 3203 |
| 546 | Computational Chemistry | 1 | 61 | 1347 | 960 |
| 546 | Freshwater Ecology | 2 | 61 | 429 | 188 |
| 546 | Psychopharmacology | 5 | 61 | 1562 | 2307 |
| 546 | Long-Term Care | 5 | 61 | 458 | 846 |
| 546 | Long-term care facilities | 5 | 61 | 452 | 837 |
| 546 | Sequential Analysis | 4 | 61 | 73 | 37 |
| 546 | Aquatic animals | 2 | 61 | 310 | 218 |
| 553 | Quantum Computing | 3 | 60 | 202 | 220 |
| 553 | Entropy | 8 | 60 | 629 | 1059 |
| 553 | Dementia | 16 | 60 | 782 | 1314 |
| 556 | Bioenergetics | 1 | 59 | 1696 | 1278 |
| 556 | Educational Leadership | 1 | 59 | 353 | 104 |
| 556 | Energy metabolism | 1 | 59 | 1177 | 916 |
| 556 | cell membrane | 1 | 59 | 1116 | 894 |
| 560 | Obstetrics | 3 | 58 | 3227 | 3186 |
| 560 | Manufacturing Processes | 1 | 58 | 4022 | 2681 |
| 560 | Applied Linguistics | 6 | 58 | 429 | 499 |
| 560 | Production Engineering | 1 | 58 | 3640 | 2068 |
| 560 | Adult Education | 10 | 58 | 247 | 460 |
| 560 | Alzheimer's disease | 15 | 58 | 834 | 1444 |
| 560 | software | 3 | 58 | 1164 | 1430 |
| 567 | health and race | 3 | 57 | 260 | 296 |
| 567 | Soil biology | 4 | 57 | 928 | 1517 |
| 569 | Enzyme | 1 | 56 | 1026 | 909 |
| 569 | System design | 8 | 56 | 126 | 340 |
| 571 | Hemostasis | 1 | 55 | 1626 | 1124 |
| 571 | Thrombosis | 1 | 55 | 2140 | 1668 |
| 571 | Cell differentiation | 3 | 55 | 2163 | 2947 |
| 571 | Africa | 1 | 55 | 3374 | 1460 |
| 571 | child behavior | 2 | 55 | 555 | 581 |
| 576 | social science | 1 | 54 | 356 | 330 |
| 576 | technical education | 1 | 54 | 1044 | 516 |
| 576 | Memory | 6 | 54 | 1695 | 2870 |
| 576 | Nonlinear mechanics | 7 | 54 | 240 | 525 |
| 580 | Architecture | 3 | 53 | 859 | 476 |
| 580 | Eating Disorders | 3 | 53 | 1018 | 1201 |
| 580 | Feeding and Eating Disorders | 3 | 53 | 975 | 1156 |
| 580 | construction | 3 | 53 | 197 | 311 |
| 584 | Neonatology | 2 | 52 | 1005 | 934 |
| 584 | Behavioral research | 4 | 52 | 431 | 375 |
| 584 | atmosphere | 3 | 52 | 991 | 1225 |
| 587 | Psycholinguistics | 3 | 51 | 1079 | 1276 |
| 587 | Synapses | 3 | 51 | 321 | 491 |
| 589 | Hematology | 4 | 50 | 3591 | 3909 |
| 589 | Organometallic chemistry | 4 | 50 | 2111 | 2159 |
| 589 | residential treatment | 4 | 50 | 124 | 171 |
| 589 | women | 7 | 50 | 532 | 732 |
| 589 | Europe | 6 | 50 | 2986 | 3836 |
| 594 | International Relations | 2 | 49 | 1728 | 936 |
| 594 | Environmental Economics | 2 | 49 | 657 | 570 |
| 594 | Organizational learning | 2 | 49 | 803 | 359 |
| 594 | sadness | 2 | 49 | 331 | 226 |
| 594 | organizational effectiveness | 2 | 49 | 629 | 548 |
| 594 | Transplantation | 1 | 49 | 2221 | 1953 |
| 594 | Performance | 2 | 49 | 392 | 403 |
| 594 | death | 2 | 49 | 452 | 273 |
| 594 | Suicide | 2 | 49 | 818 | 744 |
| 594 | antisocial personality disorder | 2 | 49 | 331 | 226 |
| 594 | eugenics | 3 | 49 | 730 | 857 |
| 605 | Plant breeding | 2 | 48 | 1253 | 1181 |
| 605 | hazard mitigation | 3 | 48 | 1192 | 1390 |
| 605 | Therapeutics | 3 | 48 | 2304 | 3017 |
| 605 | irreversible processes | 1 | 48 | 76 | 32 |
| 605 | Nonequilibrium thermodynamics | 1 | 48 | 76 | 32 |
| 610 | community development | 5 | 47 | 462 | 707 |
| 610 | elasticity | 3 | 47 | 269 | 291 |
| 610 | Investigations | 2 | 47 | 6 | 4 |
| 610 | Phylogeny | 3 | 47 | 1092 | 1535 |
| 610 | Bereavement | 1 | 47 | 450 | 189 |
| 615 | Pathology | 1 | 46 | 4491 | 3810 |
| 615 | finance | 5 | 46 | 2139 | 2432 |
| 617 | Semiconductors | 2 | 45 | 2968 | 2552 |
| 617 | Measurement | 7 | 45 | 898 | 1755 |
| 617 | gene therapy | 1 | 45 | 2316 | 2055 |
| 617 | ethnic groups | 2 | 45 | 464 | 431 |
| 617 | California | 2 | 45 | 615 | 548 |
| 617 | freshwater biology | 3 | 45 | 1134 | 1373 |
| 617 | rivers | 2 | 45 | 451 | 454 |
| 624 | Pharmacy | 2 | 44 | 3208 | 3239 |
| 624 | Experimental Design | 3 | 44 | 313 | 435 |
| 624 | Quality Control | 3 | 44 | 2294 | 2716 |
| 624 | Cognitive Science | 3 | 44 | 1840 | 2262 |
| 628 | Career development | 2 | 43 | 585 | 465 |
| 628 | Simulation Methods | 8 | 43 | 581 | 1385 |
| 628 | Neural circuitry | 4 | 43 | 2079 | 2968 |
| 628 | families | 5 | 43 | 714 | 985 |
| 628 | Microstructure | 1 | 43 | 1830 | 1052 |
| 628 | Relationships | 2 | 43 | 218 | 277 |
| 634 | Orthopedics | 1 | 42 | 3005 | 2292 |
| 634 | Orthopedic Surgery | 1 | 42 | 1738 | 1294 |
| 634 | Quality Assurance | 1 | 42 | 980 | 514 |
| 634 | International security | 1 | 42 | 440 | 453 |
| 634 | Sports | 2 | 42 | 2889 | 2282 |
| 634 | drug therapy | 4 | 42 | 2687 | 3750 |
| 634 | dissociative disorders | 1 | 42 | 255 | 186 |
| 634 | conflict management | 1 | 42 | 530 | 464 |
| 642 | Dentistry | 1 | 41 | 1531 | 822 |
| 642 | Energy Conversion | 2 | 41 | 1717 | 1972 |
| 642 | Energy Storage | 2 | 41 | 1854 | 1713 |
| 642 | Visual Perception | 5 | 41 | 1746 | 2882 |
| 642 | sports administration | 1 | 41 | 615 | 378 |
| 642 | United Kingdom | 5 | 41 | 1566 | 2659 |
| 648 | Remote Sensing | 7 | 40 | 1145 | 1640 |
| 648 | Land use | 3 | 40 | 1381 | 1875 |
| 648 | family studies | 2 | 40 | 49 | 104 |
| 648 | Parenting | 2 | 40 | 78 | 127 |
| 648 | Child rearing | 2 | 40 | 78 | 127 |
| 648 | North America | 2 | 40 | 1387 | 1214 |
| 654 | Mechatronics | 3 | 39 | 836 | 1023 |
| 654 | Histochemistry | 1 | 39 | 2274 | 1616 |
| 654 | Flexible manufacturing systems | 2 | 39 | 587 | 734 |
| 654 | histological techniques | 1 | 39 | 1417 | 1436 |
| 654 | Semantic web | 2 | 39 | 239 | 263 |
| 659 | Geochemistry | 4 | 38 | 2090 | 2983 |
| 659 | homosexuality | 3 | 38 | 434 | 604 |
| 659 | Budget | 6 | 38 | 87 | 167 |
| 662 | Computational Intelligence | 3 | 37 | 1209 | 1232 |
| 662 | Race | 2 | 37 | 87 | 94 |
| 662 | War and Society | 4 | 37 | 191 | 423 |
| 662 | Cell death | 1 | 37 | 2231 | 2328 |
| 666 | Epigenetics | 2 | 36 | 304 | 338 |
| 666 | Ocean-atmosphere interaction | 2 | 36 | 153 | 74 |
| 666 | Epigenomics | 2 | 36 | 299 | 330 |
| 666 | Health insurance | 2 | 36 | 685 | 730 |
| 666 | color | 1 | 36 | 613 | 365 |
| 671 | Food additives | 2 | 35 | 1811 | 2199 |
| 671 | civilization | 9 | 35 | 900 | 599 |
| 671 | innovation | 1 | 35 | 1217 | 1166 |
| 671 | immigration | 1 | 35 | 450 | 385 |
| 671 | migration policy | 1 | 35 | 463 | 389 |
| 671 | Asylum seeker | 1 | 35 | 368 | 373 |
| 671 | Educational evaluation | 1 | 35 | 413 | 213 |
| 678 | Demography | 2 | 34 | 1070 | 1186 |
| 678 | Quantum Chemistry | 4 | 34 | 949 | 1106 |
| 678 | Developmental Disabilities | 3 | 34 | 1185 | 1856 |
| 678 | France | 9 | 34 | 220 | 404 |
| 678 | Wind power | 1 | 34 | 715 | 479 |
| 678 | Documentation | 4 | 34 | 309 | 487 |
| 684 | Photochemistry | 7 | 33 | 1444 | 2956 |
| 684 | Electrochemical Analysis | 3 | 33 | 1810 | 2350 |
| 686 | Information Theory | 6 | 32 | 1037 | 1684 |
| 686 | Serology | 1 | 32 | 1179 | 937 |
| 686 | Computer Vision | 2 | 32 | 1675 | 2052 |
| 686 | Cryptography | 1 | 32 | 1342 | 722 |
| 686 | Maternal health services | 2 | 32 | 659 | 827 |
| 686 | school environment | 1 | 32 | 227 | 188 |
| 686 | children | 2 | 32 | 791 | 877 |
| 693 | Game Theory | 2 | 31 | 834 | 741 |
| 693 | Ergonomics | 6 | 31 | 860 | 1511 |
| 693 | Ecological Engineering | 1 | 31 | 1363 | 1505 |
| 693 | Psychiatric Nursing | 1 | 31 | 1377 | 1028 |
| 693 | Petrology | 1 | 31 | 1486 | 1392 |
| 693 | Radiochemistry | 2 | 31 | 1590 | 1329 |
| 693 | Radiobiology | 5 | 31 | 1653 | 2627 |
| 693 | Digital humanities | 1 | 31 | 247 | 154 |
| 693 | Futures | 1 | 31 | 665 | 514 |
| 693 | Nonprofit organizations | 1 | 31 | 672 | 592 |
| 693 | cell physiology | 2 | 31 | 2239 | 3029 |
| 693 | disease outbreaks | 1 | 31 | 1215 | 1252 |
| 693 | Epidemics | 1 | 31 | 1140 | 1232 |
| 693 | Population | 3 | 31 | 1261 | 1659 |
| 693 | biological monitoring | 5 | 31 | 401 | 1144 |
| 708 | Primary health care | 3 | 30 | 2362 | 3030 |
| 708 | Multilingualism | 1 | 30 | 591 | 432 |
| 708 | Data Warehousing | 6 | 30 | 3 | 47 |
| 708 | Chromatographic analysis | 4 | 30 | 2060 | 3007 |
| 708 | Fisheries | 3 | 30 | 2066 | 2565 |
| 713 | Fluid Mechanics | 3 | 29 | 2060 | 2481 |
| 713 | Clinical Pharmacology | 1 | 29 | 2920 | 2666 |
| 713 | Multicultural Education | 1 | 29 | 758 | 500 |
| 713 | income distribution | 1 | 29 | 338 | 334 |
| 713 | Machining | 1 | 29 | 352 | 232 |
| 713 | monitoring | 1 | 29 | 681 | 448 |
| 713 | Communication | 5 | 29 | 1871 | 2851 |
| 713 | India | 10 | 29 | 1000 | 1772 |
| 721 | Medical Microbiology | 1 | 28 | 4462 | 4633 |
| 721 | Small Business | 1 | 28 | 1372 | 1517 |
| 723 | Political Economy | 1 | 27 | 380 | 158 |
| 723 | Landscape Ecology | 2 | 27 | 699 | 1044 |
| 723 | warfare | 3 | 27 | 319 | 637 |
| 723 | mycoses | 1 | 27 | 1735 | 1895 |
| 723 | Iron | 1 | 27 | 808 | 665 |
| 723 | Bacterial infections | 1 | 27 | 1958 | 2108 |
| 723 | Host-parasite interactions | 1 | 27 | 2424 | 2837 |
| 723 | World Wide Web | 2 | 27 | 660 | 579 |
| 723 | international cooperation | 3 | 27 | 668 | 1181 |
| 732 | Migration | 1 | 26 | 460 | 225 |
| 732 | body temperature | 1 | 26 | 1112 | 961 |
| 734 | Genetic Counseling | 1 | 25 | 635 | 528 |
| 734 | Algebra | 1 | 25 | 2440 | 1479 |
| 734 | economic forecasting | 4 | 25 | 293 | 710 |
| 734 | Forecasting | 4 | 25 | 539 | 989 |
| 734 | Information society | 2 | 25 | 223 | 329 |
| 739 | Neurochemistry | 2 | 24 | 3284 | 4213 |
| 739 | Algorithms | 5 | 24 | 617 | 1094 |
| 739 | Pediatric Nursing | 1 | 24 | 1113 | 881 |
| 739 | Obstetric Nursing | 1 | 24 | 786 | 599 |
| 739 | Fracture mechanics | 3 | 24 | 1677 | 2261 |
| 739 | human development | 3 | 24 | 849 | 1437 |
| 745 | Probability | 2 | 23 | 928 | 1214 |
| 745 | biofuels | 1 | 23 | 646 | 1010 |
| 745 | Europa | 1 | 23 | 1053 | 928 |
| 745 | Autism | 2 | 23 | 1010 | 1511 |
| 745 | Economic planning | 3 | 23 | 548 | 1032 |
| 750 | Urban Planning | 1 | 22 | 843 | 852 |
| 750 | Health Services Administration | 3 | 22 | 1396 | 2310 |
| 750 | Systems Biology | 3 | 22 | 2107 | 3133 |
| 750 | Molecular recognition | 1 | 22 | 571 | 579 |
| 750 | Mass Media | 1 | 22 | 1852 | 924 |
| 750 | local government | 5 | 22 | 268 | 631 |
| 750 | Chromatography | 2 | 22 | 2481 | 3112 |
| 750 | fuel cells | 1 | 22 | 2214 | 2245 |
| 750 | Risk | 2 | 22 | 866 | 1248 |
| 750 | Sulfur | 1 | 22 | 274 | 157 |
| 750 | Fluorescence | 4 | 22 | 411 | 807 |
| 761 | Forest Ecology | 2 | 21 | 1506 | 2120 |
| 761 | dual diagnosis | 2 | 21 | 151 | 173 |
| 761 | national security | 2 | 21 | 567 | 439 |
| 761 | Vaccines | 1 | 21 | 3696 | 3836 |
| 765 | Environmental Microbiology | 1 | 20 | 2821 | 3284 |
| 765 | Risk Management | 1 | 20 | 1699 | 1605 |
| 765 | mental health policy | 2 | 20 | 288 | 443 |
| 765 | Cost control | 1 | 20 | 349 | 326 |
| 765 | Financial management | 1 | 20 | 1100 | 1286 |
| 765 | Transport | 2 | 20 | 933 | 1396 |
| 765 | Sea | 2 | 20 | 835 | 1201 |
| 765 | Fishery resources | 2 | 20 | 945 | 1318 |
| 765 | security measures | 1 | 20 | 122 | 131 |
| 765 | Student Health Services | 4 | 20 | 246 | 555 |
| 775 | Nanomedicine | 1 | 19 | 603 | 786 |
| 775 | energy conservation | 2 | 19 | 2900 | 4018 |
| 775 | Energy Harvesting | 1 | 19 | 849 | 1100 |
| 778 | Higher Education | 1 | 18 | 1180 | 978 |
| 778 | Chemical Ecology | 1 | 18 | 1024 | 1294 |
| 778 | Combustion | 2 | 18 | 1768 | 2331 |
| 778 | Crystallization | 5 | 18 | 473 | 896 |
| 778 | Neurotransmitters | 2 | 18 | 825 | 915 |
| 778 | mass transfer | 3 | 18 | 1950 | 2973 |
| 778 | Crystallography | 5 | 18 | 1677 | 2223 |
| 778 | pheromones | 1 | 18 | 957 | 1238 |
| 778 | Diplomatic relations | 2 | 18 | 1085 | 748 |
| 778 | Urban Areas | 1 | 18 | 548 | 510 |
| 788 | Geriatric Nursing | 3 | 17 | 536 | 867 |
| 788 | Semantics | 1 | 17 | 535 | 448 |
| 788 | Computational Fluid Dynamics | 2 | 17 | 1006 | 1378 |
| 788 | Regional Development | 2 | 17 | 373 | 622 |
| 788 | glycoproteins | 1 | 17 | 997 | 1240 |
| 788 | Development planning | 2 | 17 | 325 | 591 |
| 788 | Glycoconjugates | 1 | 17 | 997 | 1240 |
| 788 | Oligosaccharide | 1 | 17 | 691 | 925 |
| 788 | Carbohydrates | 1 | 17 | 974 | 1150 |
| 788 | glycolipids | 1 | 17 | 997 | 1240 |
| 798 | Electrical Engineering | 8 | 16 | 2796 | 4546 |
| 798 | Computer Engineering | 1 | 16 | 1879 | 1715 |
| 798 | Agricultural Engineering | 1 | 16 | 1112 | 1100 |
| 798 | Audiology | 1 | 16 | 1483 | 1570 |
| 798 | Surface Chemistry | 3 | 16 | 4359 | 6294 |
| 798 | Intercultural Communication | 1 | 16 | 824 | 795 |
| 798 | Ceramics | 2 | 16 | 2324 | 2705 |
| 798 | Social Networks | 3 | 16 | 333 | 781 |
| 798 | Cross-Cultural Studies | 1 | 16 | 1481 | 1496 |
| 798 | Gene expression regulation | 1 | 16 | 2095 | 2338 |
| 798 | Solitons | 2 | 16 | 1611 | 2106 |
| 798 | Hearing Aids | 1 | 16 | 455 | 395 |
| 798 | Genetic regulation | 1 | 16 | 2342 | 2725 |
| 798 | Fractals | 2 | 16 | 1847 | 2281 |
| 798 | Chaos | 2 | 16 | 1611 | 2106 |
| 798 | Body Image | 1 | 16 | 419 | 614 |
| 798 | Social support | 1 | 16 | 408 | 579 |
| 798 | disabilities | 1 | 16 | 1600 | 1689 |
| 798 | Social environment | 1 | 16 | 485 | 655 |
| 798 | Glass | 1 | 16 | 2082 | 2280 |
| 798 | pottery | 1 | 16 | 2000 | 2215 |
| 798 | Acarology | 1 | 16 | 660 | 736 |
| 798 | Mites | 1 | 16 | 913 | 862 |
| 798 | Ticks | 1 | 16 | 713 | 748 |
| 798 | Acari | 1 | 16 | 628 | 726 |
| 823 | Law | 3 | 15 | 1864 | 1528 |
| 823 | Cybernetics | 3 | 15 | 1614 | 2641 |
| 823 | Agricultural Chemistry | 1 | 15 | 4151 | 4417 |
| 823 | Clinical Biochemistry | 1 | 15 | 2726 | 2795 |
| 823 | Plant Morphology | 1 | 15 | 1184 | 1296 |
| 823 | Reproductive health | 2 | 15 | 1260 | 1947 |
| 823 | Cognitive Therapy | 2 | 15 | 915 | 1362 |
| 823 | Immunogenetics | 1 | 15 | 1523 | 1768 |
| 823 | Social stigma | 1 | 15 | 20 | 43 |
| 823 | Community Colleges | 2 | 15 | 328 | 340 |
| 823 | plant health | 1 | 15 | 89 | 129 |
| 823 | industrial relations | 2 | 15 | 1161 | 1467 |
| 823 | Employee rights | 2 | 15 | 121 | 173 |
| 823 | synthesis | 2 | 15 | 1584 | 1794 |
| 823 | Marine mammals | 2 | 15 | 427 | 641 |
| 838 | Political Geography | 3 | 14 | 322 | 608 |
| 838 | Oxidative stress | 1 | 14 | 2300 | 3057 |
| 838 | epilepsy | 1 | 14 | 1962 | 2255 |
| 838 | Combinatorial chemistry | 1 | 14 | 1797 | 2215 |
| 838 | Cellular senescence | 1 | 14 | 1583 | 2247 |
| 838 | Expert Systems | 1 | 14 | 552 | 586 |
| 838 | Drug design | 1 | 14 | 3529 | 3779 |
| 838 | Popular Music | 1 | 14 | 219 | 109 |
| 838 | Human-robot interaction | 1 | 14 | 120 | 161 |
| 838 | Invertebrates | 1 | 14 | 1320 | 1532 |
| 838 | Membranes | 3 | 14 | 2066 | 3775 |
| 838 | civil service | 2 | 14 | 536 | 750 |
| 838 | Capital asset pricing model | 1 | 14 | 148 | 174 |
| 851 | Ecological Genetics | 1 | 13 | 1384 | 1460 |
| 851 | Memory disorders | 1 | 13 | 522 | 609 |
| 851 | Aerosols | 2 | 13 | 860 | 1273 |
| 851 | big data | 2 | 13 | 824 | 1243 |
| 851 | Molecular Spectroscopy | 1 | 13 | 3217 | 3649 |
| 851 | Groundwater | 2 | 13 | 1041 | 1547 |
| 851 | Interactive multimedia | 1 | 13 | 753 | 772 |
| 851 | Microscopy | 1 | 13 | 3329 | 3177 |
| 851 | strategy | 1 | 13 | 484 | 346 |
| 851 | aerosol | 2 | 13 | 599 | 919 |
| 861 | Nursing | 3 | 12 | 2425 | 3576 |
| 861 | Systems Analysis | 2 | 12 | 1659 | 2505 |
| 861 | Socioeconomic Factors | 1 | 12 | 1715 | 2155 |
| 861 | complementary therapies | 3 | 12 | 2561 | 4560 |
| 861 | Knot Theory | 1 | 12 | 458 | 306 |
| 861 | Calorimetry | 1 | 12 | 2341 | 2423 |
| 861 | infection | 1 | 12 | 3398 | 4028 |
| 861 | Informatics | 1 | 12 | 1726 | 1942 |
| 861 | Thermal analysis | 1 | 12 | 2341 | 2423 |
| 870 | Industrial Engineering | 1 | 11 | 3590 | 3915 |
| 870 | Mathematics Education | 1 | 11 | 914 | 814 |
| 870 | Econometrics | 3 | 11 | 1604 | 2298 |
| 870 | Development Economics | 1 | 11 | 1020 | 1181 |
| 870 | Queuing Theory | 1 | 11 | 341 | 362 |
| 870 | Bioethics | 2 | 11 | 1426 | 1898 |
| 870 | Superconductors | 3 | 11 | 862 | 1270 |
| 870 | Medical Ethics | 2 | 11 | 1821 | 2421 |
| 870 | Neuromuscular diseases | 1 | 11 | 1353 | 1739 |
| 870 | nursing ethics | 1 | 11 | 554 | 752 |
| 870 | Forest Management | 1 | 11 | 1894 | 2321 |
| 870 | polar regions | 1 | 11 | 1346 | 1597 |
| 870 | disaster relief | 2 | 11 | 323 | 771 |
| 870 | Muscles | 1 | 11 | 1760 | 2256 |
| 870 | Consciousness | 1 | 11 | 947 | 1029 |
| 885 | Visual Arts | 1 | 10 | 184 | 210 |
| 885 | Embedded Systems | 3 | 10 | 223 | 498 |
| 885 | Gender Studies | 1 | 10 | 973 | 1161 |
| 885 | Queer Studies | 1 | 10 | 601 | 832 |
| 885 | Optical Communications | 3 | 10 | 758 | 1331 |
| 885 | Pharmaceutical Technology | 1 | 10 | 2840 | 3502 |
| 885 | Sociolinguistics | 2 | 10 | 614 | 878 |
| 885 | Welfare Economics | 1 | 10 | 801 | 926 |
| 885 | Restoration Ecology | 1 | 10 | 963 | 1184 |
| 885 | soil microbiology | 1 | 10 | 2768 | 3715 |
| 885 | Art | 1 | 10 | 926 | 380 |
| 885 | Drug delivery systems | 1 | 10 | 2935 | 3660 |
| 885 | Art and Society | 1 | 10 | 97 | 34 |
| 885 | Environmental risk assessment | 1 | 10 | 999 | 1244 |
| 885 | Government policy | 1 | 10 | 380 | 511 |
| 885 | Social interaction | 1 | 10 | 646 | 787 |
| 885 | Tropical Medicine | 1 | 10 | 3763 | 4269 |
| 885 | DNA repair | 1 | 10 | 655 | 951 |
| 885 | Scandinavia | 2 | 10 | 1113 | 1748 |
| 885 | Written communication | 1 | 10 | 228 | 279 |
| 905 | Genetic epidemiology | 1 | 9 | 628 | 879 |
| 905 | Quantum electronics | 1 | 9 | 2174 | 1988 |
| 905 | Educational Technology | 3 | 9 | 1814 | 3393 |
| 905 | Religion | 1 | 9 | 2046 | 1271 |
| 905 | Cognitive Behavioral Therapy | 1 | 9 | 498 | 691 |
| 905 | Spirituality | 1 | 9 | 182 | 157 |
| 905 | Communication in medicine | 1 | 9 | 1085 | 1439 |
| 905 | Renaissance | 5 | 9 | 219 | 258 |
| 905 | heredity | 1 | 9 | 1489 | 1829 |
| 905 | Combinatorial analysis | 2 | 9 | 1489 | 1547 |
| 905 | Protein engineering | 1 | 9 | 540 | 819 |
| 905 | molecular design | 1 | 9 | 600 | 832 |
| 905 | lasers | 2 | 9 | 2862 | 3476 |
| 918 | Structuralism | 1 | 8 | 326 | 542 |
| 918 | Hydrogeology | 2 | 8 | 1079 | 1706 |
| 918 | Distance Education | 1 | 8 | 1075 | 1303 |
| 918 | General Surgery | 2 | 8 | 1147 | 1766 |
| 918 | Databases | 1 | 8 | 727 | 840 |
| 918 | Combinatorial optimization | 2 | 8 | 758 | 1083 |
| 918 | Democracy | 7 | 8 | 169 | 623 |
| 918 | Computational neuroscience | 1 | 8 | 77 | 122 |
| 918 | Online social networks | 2 | 8 | 484 | 966 |
| 918 | Alternative Medicine | 2 | 8 | 2831 | 4643 |
| 918 | Magnetic Resonance Spectroscopy | 1 | 8 | 2183 | 2551 |
| 918 | Metallography | 1 | 8 | 1625 | 2035 |
| 918 | Chromosomes | 1 | 8 | 1920 | 2615 |
| 918 | telecommunication in education | 1 | 8 | 184 | 184 |
| 918 | NMR | 1 | 8 | 1098 | 1312 |
| 918 | educational innovations | 4 | 8 | 468 | 1251 |
| 918 | magnetic resonance | 1 | 8 | 1137 | 1353 |
| 918 | Liquid chromatography | 2 | 8 | 836 | 1356 |
| 918 | Birth control | 3 | 8 | 545 | 1512 |
| 937 | Molecular Pharmacology | 2 | 7 | 1192 | 2260 |
| 937 | Cloud Computing | 1 | 7 | 572 | 838 |
| 937 | Historical Geography | 8 | 7 | 113 | 320 |
| 937 | Software Maintenance | 2 | 7 | 281 | 579 |
| 937 | Logistics | 1 | 7 | 1129 | 1457 |
| 937 | Requirements Engineering | 1 | 7 | 175 | 346 |
| 937 | Geriatric Psychiatry | 1 | 7 | 2229 | 2934 |
| 937 | Stochastic Processes | 2 | 7 | 1383 | 2029 |
| 937 | Human Rights | 2 | 7 | 849 | 1363 |
| 937 | Intelligence | 1 | 7 | 489 | 689 |
| 937 | Bibliometrics | 1 | 7 | 321 | 544 |
| 937 | International Finance | 1 | 7 | 2680 | 3070 |
| 937 | educational statistics | 1 | 7 | 202 | 286 |
| 937 | Vocational guidance | 1 | 7 | 1618 | 2100 |
| 937 | Jurisprudence | 1 | 7 | 1894 | 2224 |
| 937 | Scotland | 2 | 7 | 188 | 351 |
| 937 | Culture techniques | 1 | 7 | 678 | 874 |
| 937 | Southern states | 1 | 7 | 684 | 755 |
| 937 | Meteorites | 1 | 7 | 1569 | 2136 |
| 956 | Environmental Toxicology | 1 | 6 | 4547 | 6030 |
| 956 | Process Control | 1 | 6 | 1650 | 2371 |
| 956 | Electromagnetism | 1 | 6 | 1543 | 1748 |
| 956 | Geographic information systems | 3 | 6 | 1358 | 2771 |
| 956 | Feminist theory | 1 | 6 | 435 | 477 |
| 956 | Magnetic Materials | 1 | 6 | 2440 | 2904 |
| 956 | Multimedia Systems | 3 | 6 | 2091 | 3585 |
| 956 | Gender identity | 1 | 6 | 659 | 701 |
| 956 | Latin America | 2 | 6 | 1922 | 2171 |
| 956 | population policy | 1 | 6 | 337 | 526 |
| 956 | community organization | 2 | 6 | 100 | 240 |
| 956 | Cerebellum | 1 | 6 | 672 | 971 |
| 956 | planning | 1 | 6 | 1614 | 2068 |
| 956 | Cerebellar ataxia | 1 | 6 | 672 | 971 |
| 970 | Histology | 1 | 5 | 3510 | 4707 |
| 970 | Materials Engineering | 1 | 5 | 1653 | 2101 |
| 970 | Fashion Design | 1 | 5 | 100 | 161 |
| 970 | Evolutionary Psychology | 1 | 5 | 337 | 521 |
| 970 | Economic Thought | 1 | 5 | 607 | 917 |
| 970 | poverty | 1 | 5 | 989 | 1556 |
| 970 | pain management | 1 | 5 | 1487 | 1906 |
| 970 | Executive Power | 1 | 5 | 211 | 224 |
| 970 | child sexual abuse | 1 | 5 | 342 | 593 |
| 970 | plant viruses | 1 | 5 | 432 | 677 |
| 970 | economic conditions | 1 | 5 | 1288 | 1402 |
| 970 | Plant diseases | 1 | 5 | 3362 | 4021 |
| 970 | Radicalism | 1 | 5 | 127 | 129 |
| 970 | Fashion | 1 | 5 | 331 | 453 |
| 970 | Textile industry | 1 | 5 | 1240 | 1355 |
| 985 | Public Relations | 1 | 4 | 1018 | 1305 |
| 985 | Political Sociology | 1 | 4 | 843 | 1082 |
| 985 | Virtual reality | 2 | 4 | 563 | 1176 |
| 985 | patient satisfaction | 2 | 4 | 201 | 481 |
| 985 | Contraception | 1 | 4 | 1342 | 2071 |
| 985 | Cognitive Radio Networks | 1 | 4 | 189 | 306 |
| 985 | Democratization | 1 | 4 | 329 | 536 |
| 985 | Cold War | 6 | 4 | 74 | 221 |
| 985 | foreign policy | 1 | 4 | 537 | 472 |
| 985 | Evidence-Based Medicine | 2 | 4 | 1997 | 3668 |
| 985 | micromechanics | 1 | 4 | 1251 | 1834 |
| 985 | Religion and Psychology | 1 | 4 | 1200 | 1643 |
| 985 | Reproductive toxicology | 1 | 4 | 1060 | 1618 |
| 985 | Educational Change | 1 | 4 | 157 | 315 |
| 985 | Portfolio Management | 1 | 4 | 645 | 783 |
| 985 | Malaria | 1 | 4 | 1536 | 2230 |