| 1 | Astronomy | 609 | 35.2K | 204 | 211 |
| 2 | Astrophysics | 347 | 28.0K | 320 | 276 |
| 3 | Science | 231 | 10.7K | 1064 | 1364 |
| 4 | Medicine | 298 | 10.4K | 928 | 1023 |
| 5 | Public Health | 293 | 9.7K | 317 | 346 |
| 6 | Biology | 109 | 7.0K | 1689 | 1718 |
| 7 | Spectrum analysis | 108 | 6.6K | 608 | 481 |
| 8 | Microbiology | 98 | 5.8K | 1185 | 988 |
| 9 | Virology | 45 | 5.4K | 757 | 596 |
| 10 | Research | 173 | 5.4K | 1054 | 1105 |
| 11 | Physics | 80 | 5.1K | 2274 | 2121 |
| 12 | Ecology | 110 | 5.0K | 989 | 1049 |
| 13 | Natural history | 15 | 4.8K | 1742 | 1315 |
| 14 | Africa | 434 | 4.1K | 12 | 17 |
| 15 | Biochemistry | 106 | 4.0K | 1896 | 1745 |
| 16 | Biotechnology | 96 | 4.0K | 1078 | 1114 |
| 17 | Environment | 73 | 3.9K | 890 | 1028 |
| 18 | Electrochemistry | 155 | 3.7K | 446 | 446 |
| 19 | Molecular Biology | 83 | 3.3K | 1783 | 1838 |
| 20 | Nuclear Physics | 154 | 3.2K | 836 | 895 |
| 21 | Chemistry | 138 | 3.0K | 1771 | 2281 |
| 22 | Microbial Ecology | 33 | 2.8K | 620 | 487 |
| 23 | Developing countries | 108 | 2.8K | 130 | 191 |
| 24 | Health Services Research | 83 | 2.7K | 159 | 154 |
| 25 | Epidemiology | 107 | 2.7K | 429 | 529 |
| 26 | Botany | 54 | 2.5K | 1005 | 899 |
| 27 | Psychology | 147 | 2.2K | 553 | 857 |
| 28 | Earth Sciences | 122 | 2.2K | 319 | 566 |
| 29 | Primary health care | 59 | 2.0K | 222 | 157 |
| 30 | Education | 164 | 2.0K | 324 | 468 |
| 30 | Health Policy | 75 | 2.0K | 272 | 294 |
| 32 | Geophysics | 103 | 2.0K | 633 | 850 |
| 33 | Cell Biology | 12 | 1.9K | 2239 | 1355 |
| 34 | Biochemical Engineering | 26 | 1.9K | 1111 | 1099 |
| 35 | Genetics | 28 | 1.8K | 1271 | 1155 |
| 36 | Obesity | 17 | 1.8K | 771 | 413 |
| 37 | biological evolution | 23 | 1.8K | 704 | 584 |
| 38 | Geochemistry | 85 | 1.8K | 327 | 521 |
| 39 | Marine Biology | 79 | 1.8K | 410 | 548 |
| 40 | Pollution | 40 | 1.8K | 1597 | 1676 |
| 41 | Reproduction | 25 | 1.7K | 736 | 415 |
| 42 | Analytical Chemistry | 77 | 1.6K | 934 | 1143 |
| 43 | Geodesy | 79 | 1.6K | 26 | 37 |
| 44 | Economic History | 69 | 1.6K | 549 | 428 |
| 45 | Social Sciences | 144 | 1.6K | 252 | 406 |
| 46 | Information Technology | 16 | 1.5K | 1043 | 377 |
| 47 | Geography | 63 | 1.5K | 360 | 413 |
| 48 | Human genetics | 7 | 1.5K | 1481 | 1361 |
| 49 | Pharmacognosy | 30 | 1.5K | 427 | 330 |
| 50 | health planning | 59 | 1.4K | 211 | 198 |
| 51 | Health Services Administration | 39 | 1.4K | 122 | 110 |
| 52 | Medicinal plants | 26 | 1.4K | 291 | 226 |
| 53 | Environmental Policy | 26 | 1.4K | 948 | 887 |
| 54 | Catalysis | 43 | 1.4K | 1173 | 1246 |
| 55 | Sociology | 108 | 1.4K | 310 | 545 |
| 56 | Socioeconomic Factors | 46 | 1.4K | 48 | 61 |
| 57 | Telecommunication | 16 | 1.4K | 1200 | 593 |
| 58 | Psychiatry | 39 | 1.4K | 1170 | 1217 |
| 59 | Cytology | 21 | 1.4K | 1766 | 1623 |
| 60 | Nutrition | 54 | 1.3K | 902 | 1139 |
| 61 | Materials | 41 | 1.3K | 2001 | 1920 |
| 62 | gene mapping | 20 | 1.2K | 693 | 593 |
| 63 | Global Health | 70 | 1.2K | 53 | 79 |
| 64 | Nanotechnology | 62 | 1.2K | 1230 | 1721 |
| 65 | Bioengineering | 39 | 1.2K | 1173 | 1560 |
| 66 | Plant Taxonomy | 6 | 1.2K | 284 | 46 |
| 67 | Communication | 16 | 1.1K | 841 | 481 |
| 68 | viruses | 15 | 1.1K | 626 | 553 |
| 69 | health services accessibility | 44 | 1.1K | 94 | 119 |
| 70 | health workforce | 23 | 1.1K | 13 | 15 |
| 71 | Geology | 73 | 1.1K | 648 | 857 |
| 72 | Industrial Microbiology | 19 | 1.1K | 625 | 533 |
| 73 | Environmental Chemistry | 6 | 1.1K | 1594 | 699 |
| 74 | Environmental Engineering | 38 | 1.1K | 982 | 1183 |
| 75 | Electrochemical Analysis | 58 | 1.0K | 157 | 276 |
| 76 | Oceanography | 19 | 1.0K | 742 | 558 |
| 77 | Molecular evolution | 22 | 1.0K | 452 | 472 |
| 77 | Virulence | 9 | 1.0K | 618 | 497 |
| 79 | Mathematics | 100 | 1.0K | 1272 | 1341 |
| 80 | Evolution | 12 | 996 | 919 | 667 |
| 81 | Medical genetics | 14 | 970 | 1358 | 1218 |
| 82 | Chemical Engineering | 25 | 941 | 1846 | 1768 |
| 83 | Zoology | 76 | 938 | 359 | 576 |
| 84 | Genomics | 30 | 922 | 942 | 1043 |
| 85 | Embryology | 8 | 889 | 945 | 598 |
| 86 | Technology | 20 | 887 | 1675 | 1093 |
| 87 | Immunity | 9 | 869 | 1103 | 1035 |
| 88 | enzymes | 15 | 864 | 621 | 404 |
| 89 | environmental pollution | 14 | 856 | 2263 | 1812 |
| 90 | Environmental Health | 36 | 845 | 1525 | 2057 |
| 91 | Mental Disorders | 19 | 836 | 1157 | 1127 |
| 92 | Remote Sensing | 41 | 826 | 187 | 172 |
| 93 | Diabetes mellitus | 5 | 808 | 1594 | 840 |
| 94 | Biomedical Engineering | 32 | 807 | 1630 | 1781 |
| 95 | United States | 54 | 805 | 1046 | 1447 |
| 96 | Molecular Genetics | 18 | 791 | 706 | 722 |
| 97 | Behavior | 27 | 788 | 958 | 1248 |
| 98 | complementary therapies | 28 | 785 | 414 | 352 |
| 99 | Quantum Gravity | 19 | 782 | 1025 | 843 |
| 100 | History | 86 | 780 | 124 | 49 |
| 101 | health behavior | 29 | 778 | 206 | 229 |
| 102 | Energy Policy | 5 | 774 | 2107 | 1096 |
| 103 | Child | 34 | 769 | 582 | 635 |
| 104 | medical education | 24 | 767 | 497 | 401 |
| 105 | Biophysics | 32 | 765 | 2018 | 2267 |
| 106 | Andrology | 14 | 754 | 215 | 98 |
| 107 | Agriculture | 25 | 751 | 643 | 597 |
| 108 | Endocrinology | 7 | 749 | 2068 | 1302 |
| 109 | nucleic acids | 9 | 746 | 1052 | 899 |
| 110 | Teaching | 23 | 739 | 474 | 362 |
| 111 | land tenure | 21 | 724 | 2 | 4 |
| 111 | Land reform | 21 | 724 | 2 | 4 |
| 113 | Alternative Medicine | 24 | 722 | 445 | 374 |
| 114 | energy resources | 2 | 721 | 1608 | 626 |
| 115 | Diabetes | 4 | 707 | 1873 | 942 |
| 116 | Genetic engineering | 7 | 699 | 1513 | 843 |
| 117 | Latin America | 68 | 696 | 184 | 102 |
| 118 | Reproductive health | 26 | 687 | 136 | 160 |
| 119 | Sociolinguistics | 18 | 655 | 92 | 71 |
| 120 | Algae | 25 | 621 | 178 | 253 |
| 121 | Environmental Microbiology | 6 | 612 | 958 | 626 |
| 122 | Pediatrics | 28 | 610 | 678 | 1038 |
| 123 | Chromosome mapping | 12 | 605 | 860 | 773 |
| 124 | Pharmacology | 34 | 600 | 1769 | 2389 |
| 125 | Urology | 5 | 599 | 1326 | 691 |
| 126 | Adolescent | 25 | 596 | 565 | 624 |
| 127 | Human Rights | 70 | 591 | 11 | 64 |
| 127 | DNA polymerases | 6 | 591 | 269 | 338 |
| 129 | Health promotion | 26 | 590 | 346 | 438 |
| 130 | Child welfare | 29 | 588 | 232 | 244 |
| 131 | Medical Anthropology | 22 | 587 | 337 | 522 |
| 132 | Environmental Management | 18 | 584 | 1126 | 1430 |
| 133 | Pharmaceutical Chemistry | 27 | 576 | 1413 | 1797 |
| 134 | Water pollution | 13 | 572 | 1373 | 1303 |
| 135 | educational planning | 15 | 549 | 74 | 83 |
| 136 | Human Geography | 26 | 545 | 282 | 299 |
| 137 | Computational Biology | 24 | 540 | 898 | 1147 |
| 138 | infection | 6 | 534 | 1196 | 727 |
| 139 | Surface Chemistry | 22 | 533 | 1575 | 1740 |
| 139 | Extreme environments | 10 | 533 | 54 | 41 |
| 141 | Phylogeny | 11 | 527 | 376 | 380 |
| 142 | Tropical Medicine | 20 | 522 | 599 | 510 |
| 143 | Culture | 22 | 519 | 275 | 187 |
| 144 | Economic Development | 32 | 517 | 337 | 692 |
| 145 | Infections | 4 | 505 | 997 | 587 |
| 146 | Diet | 14 | 504 | 931 | 1090 |
| 147 | Bacteriology | 8 | 493 | 1162 | 1043 |
| 148 | Decision making | 3 | 488 | 1548 | 476 |
| 149 | Enzyme | 6 | 487 | 289 | 157 |
| 150 | Forensic Genetics | 13 | 486 | 70 | 64 |
| 151 | Fisheries | 10 | 484 | 883 | 636 |
| 152 | Host-parasite interactions | 5 | 482 | 912 | 835 |
| 153 | Oxidative stress | 4 | 479 | 1060 | 593 |
| 154 | computer networks | 20 | 472 | 979 | 1006 |
| 155 | Food Security | 3 | 471 | 144 | 37 |
| 156 | Medical Laboratory Science | 16 | 467 | 918 | 1158 |
| 157 | Obstetrics | 23 | 464 | 738 | 907 |
| 158 | Anthropology | 51 | 461 | 270 | 440 |
| 159 | Asia | 53 | 459 | 328 | 655 |
| 160 | plant molecular biology | 8 | 458 | 908 | 946 |
| 161 | actuators | 5 | 455 | 1752 | 1064 |
| 161 | transducers | 5 | 455 | 1752 | 1064 |
| 163 | Cellular senescence | 3 | 454 | 829 | 326 |
| 164 | city planning | 30 | 443 | 365 | 551 |
| 165 | Toxicology | 20 | 441 | 1994 | 2444 |
| 165 | Globalization | 15 | 441 | 127 | 119 |
| 165 | Women's health | 30 | 441 | 217 | 345 |
| 168 | Health | 20 | 432 | 712 | 849 |
| 168 | Ethnology | 61 | 432 | 155 | 329 |
| 170 | civil rights | 41 | 431 | 10 | 42 |
| 171 | Plant physiology | 19 | 430 | 859 | 1222 |
| 172 | Solar Energy | 10 | 426 | 883 | 819 |
| 173 | China | 12 | 417 | 1516 | 1065 |
| 174 | nanoscience | 35 | 412 | 870 | 1655 |
| 175 | Wildlife conservation | 10 | 409 | 590 | 669 |
| 176 | Materials Science | 23 | 407 | 1961 | 2367 |
| 177 | international cooperation | 13 | 402 | 185 | 196 |
| 178 | Radiation | 12 | 397 | 1046 | 792 |
| 179 | Aquatic ecology | 21 | 394 | 212 | 332 |
| 180 | Pregnancy | 19 | 393 | 199 | 275 |
| 181 | Nanostructured Materials | 18 | 391 | 1477 | 1692 |
| 182 | Neurons | 1 | 382 | 917 | 762 |
| 183 | Child psychology | 5 | 379 | 1054 | 791 |
| 184 | Europe | 18 | 378 | 1245 | 1207 |
| 185 | Conservation Biology | 9 | 376 | 608 | 598 |
| 186 | Marine Pollution | 7 | 375 | 757 | 630 |
| 187 | Herpetology | 46 | 371 | 12 | 34 |
| 188 | Transport | 7 | 369 | 330 | 260 |
| 188 | Sea | 7 | 369 | 290 | 208 |
| 188 | Fishery resources | 7 | 369 | 334 | 230 |
| 191 | Urban Policy | 25 | 363 | 117 | 281 |
| 192 | Urban Planning | 24 | 357 | 33 | 131 |
| 193 | Biodiversity | 13 | 356 | 1031 | 1166 |
| 194 | Geographic information systems | 21 | 354 | 217 | 248 |
| 195 | Hydrology | 24 | 347 | 865 | 1215 |
| 195 | Organic Chemistry | 31 | 347 | 1137 | 1691 |
| 197 | Regional Planning | 11 | 345 | 783 | 646 |
| 198 | Educational Technology | 17 | 342 | 492 | 583 |
| 198 | Plants | 12 | 342 | 1095 | 1203 |
| 200 | environmental protection | 13 | 340 | 1698 | 1985 |
| 201 | Library Science | 37 | 335 | 153 | 164 |
| 202 | Polymers | 16 | 328 | 2277 | 2312 |
| 202 | Health Education | 20 | 328 | 590 | 732 |
| 204 | Optical materials | 7 | 327 | 1834 | 1586 |
| 204 | Information Science | 15 | 327 | 1064 | 1265 |
| 206 | Hydrogeology | 19 | 315 | 178 | 280 |
| 206 | Leisure | 10 | 315 | 138 | 123 |
| 208 | Economics | 31 | 312 | 1467 | 1831 |
| 209 | Organometallic chemistry | 18 | 311 | 730 | 766 |
| 210 | Child Development | 9 | 308 | 1077 | 1051 |
| 211 | food technology | 7 | 304 | 1664 | 1467 |
| 212 | Building Materials | 2 | 303 | 1901 | 1149 |
| 212 | Electrophoresis | 4 | 303 | 1506 | 861 |
| 214 | economic policy | 16 | 302 | 1027 | 853 |
| 215 | electrocatalysis | 16 | 301 | 4 | 8 |
| 216 | Public Administration | 18 | 300 | 489 | 510 |
| 217 | Environmental monitoring | 10 | 298 | 2241 | 2558 |
| 218 | polymerization | 13 | 297 | 2115 | 2050 |
| 219 | Physiology | 11 | 296 | 2345 | 2558 |
| 220 | Biocompatible Materials | 9 | 295 | 2308 | 2614 |
| 221 | Biogeography | 7 | 293 | 610 | 761 |
| 221 | Gender Studies | 10 | 293 | 178 | 167 |
| 221 | Solid State Physics | 15 | 293 | 2057 | 2022 |
| 221 | Aquaculture | 4 | 293 | 1235 | 715 |
| 225 | Bioorganic chemistry | 15 | 292 | 1389 | 1740 |
| 226 | Population Genetics | 5 | 286 | 942 | 792 |
| 227 | Environmental Toxicology | 5 | 285 | 1969 | 1631 |
| 228 | Water | 20 | 284 | 925 | 1809 |
| 228 | Plant cells | 3 | 284 | 1050 | 1042 |
| 230 | rehabilitation | 21 | 283 | 694 | 1215 |
| 231 | women | 13 | 282 | 266 | 169 |
| 232 | soil microbiology | 5 | 281 | 1128 | 1176 |
| 233 | Food Microbiology | 3 | 278 | 1230 | 888 |
| 233 | radiative transfer | 2 | 278 | 685 | 230 |
| 233 | Mental illness | 5 | 278 | 1551 | 1373 |
| 236 | Sports Medicine | 33 | 273 | 677 | 1193 |
| 237 | Colloids | 11 | 272 | 2073 | 2376 |
| 238 | Land use | 7 | 271 | 689 | 611 |
| 239 | Photochemistry | 3 | 270 | 1789 | 923 |
| 239 | Photobiology | 3 | 270 | 1480 | 698 |
| 241 | Biomass Energy | 11 | 268 | 1333 | 1769 |
| 242 | United Kingdom | 10 | 266 | 834 | 1019 |
| 243 | Sustainable Development | 14 | 260 | 775 | 1235 |
| 244 | breastfeeding | 11 | 259 | 151 | 195 |
| 245 | animals | 26 | 258 | 286 | 509 |
| 246 | Substance Abuse | 8 | 256 | 834 | 745 |
| 247 | Pharmacy | 12 | 255 | 1020 | 1234 |
| 247 | Social Psychology | 16 | 255 | 837 | 1225 |
| 247 | educational innovations | 5 | 255 | 325 | 201 |
| 250 | Systems Biology | 4 | 254 | 1360 | 882 |
| 250 | Language Policy | 10 | 254 | 15 | 18 |
| 252 | Ecosystem management | 18 | 252 | 160 | 387 |
| 252 | Qualitative Research | 11 | 252 | 197 | 216 |
| 254 | fuel cells | 12 | 251 | 652 | 939 |
| 255 | Biodiversity conservation | 8 | 250 | 1024 | 1458 |
| 256 | Cartography | 9 | 249 | 215 | 84 |
| 257 | Multilingualism | 10 | 248 | 74 | 84 |
| 257 | Urban Renewal | 22 | 248 | 8 | 14 |
| 257 | Urban society | 22 | 248 | 7 | 9 |
| 260 | Aquatic ecosystems | 17 | 247 | 21 | 20 |
| 260 | Phytotherapy | 11 | 247 | 287 | 419 |
| 262 | Peasants | 8 | 242 | 22 | 36 |
| 263 | Higher Education | 13 | 240 | 202 | 239 |
| 263 | Mineralogy | 15 | 240 | 608 | 780 |
| 265 | Solid State Chemistry | 13 | 239 | 1304 | 1356 |
| 266 | International Relations | 21 | 236 | 346 | 401 |
| 266 | Water quality management | 12 | 236 | 877 | 948 |
| 268 | Philosophy | 21 | 235 | 670 | 446 |
| 269 | Development | 9 | 234 | 371 | 548 |
| 270 | polar regions | 8 | 233 | 367 | 340 |
| 271 | Feminism | 15 | 230 | 185 | 193 |
| 271 | human behavior | 9 | 230 | 1339 | 1935 |
| 273 | Signal Transduction | 6 | 228 | 1029 | 1155 |
| 273 | Herbal medicine | 9 | 228 | 261 | 448 |
| 275 | Dentistry | 13 | 226 | 276 | 236 |
| 276 | Geomorphology | 10 | 225 | 755 | 1009 |
| 277 | Medical Technology | 7 | 224 | 1128 | 1037 |
| 278 | child abuse | 5 | 223 | 574 | 529 |
| 279 | Developmental Psychology | 3 | 222 | 993 | 691 |
| 279 | cultural pluralism | 6 | 222 | 210 | 101 |
| 279 | coal | 4 | 222 | 1398 | 1248 |
| 282 | Occupational Therapy | 34 | 221 | 166 | 265 |
| 282 | solar power | 4 | 221 | 716 | 633 |
| 282 | Nanoparticles | 10 | 221 | 1037 | 1297 |
| 282 | solar cells | 4 | 221 | 792 | 699 |
| 286 | drug addiction | 5 | 217 | 817 | 769 |
| 286 | alcoholism | 5 | 217 | 1078 | 912 |
| 288 | Infertility | 5 | 216 | 706 | 776 |
| 288 | Allergy | 1 | 216 | 1749 | 1131 |
| 288 | fertility | 5 | 216 | 763 | 820 |
| 291 | cell physiology | 3 | 214 | 1537 | 1267 |
| 292 | Sustainable Engineering | 7 | 213 | 1091 | 1186 |
| 293 | Automation | 5 | 211 | 1806 | 1531 |
| 294 | women's rights | 13 | 210 | 29 | 53 |
| 295 | Histology | 6 | 206 | 1350 | 1330 |
| 295 | Community Psychiatry | 3 | 206 | 973 | 648 |
| 297 | Learning | 9 | 205 | 705 | 812 |
| 298 | adolescence | 10 | 204 | 437 | 575 |
| 298 | Psychiatric Epidemiology | 2 | 204 | 631 | 379 |
| 300 | Green Chemistry | 6 | 203 | 1306 | 1478 |
| 300 | Semiotics | 9 | 203 | 135 | 41 |
| 300 | Microorganisms | 2 | 203 | 1303 | 932 |
| 303 | Political Science | 31 | 201 | 505 | 783 |
| 304 | Soil biology | 2 | 200 | 1066 | 847 |
| 305 | Critical theory | 6 | 199 | 69 | 35 |
| 306 | Agricultural Chemistry | 3 | 198 | 2409 | 1664 |
| 307 | Engineering | 13 | 192 | 2354 | 2559 |
| 307 | War | 5 | 192 | 121 | 58 |
| 307 | Animal ecology | 23 | 192 | 371 | 769 |
| 307 | technical education | 8 | 192 | 335 | 276 |
| 311 | refugees | 6 | 191 | 123 | 80 |
| 312 | Numerical Analysis | 15 | 189 | 1076 | 1207 |
| 312 | Clinical Chemistry | 7 | 189 | 2029 | 2236 |
| 314 | Small Business | 5 | 188 | 567 | 745 |
| 315 | Industrial Engineering | 6 | 186 | 1429 | 1255 |
| 315 | pollutants | 6 | 186 | 1388 | 1545 |
| 315 | Environmental pollutants | 6 | 186 | 1700 | 1772 |
| 315 | management | 19 | 186 | 1360 | 2259 |
| 319 | behavioral medicine | 10 | 185 | 611 | 1059 |
| 319 | Traditional medicine | 6 | 185 | 131 | 160 |
| 321 | Optics | 3 | 184 | 4577 | 2496 |
| 321 | warfare | 4 | 184 | 219 | 207 |
| 323 | Neuroimmunology | 3 | 183 | 648 | 658 |
| 324 | Economic Assistance | 7 | 182 | 373 | 562 |
| 325 | drugs | 12 | 181 | 1048 | 1473 |
| 326 | Nanostructures | 6 | 179 | 1690 | 1660 |
| 326 | Ultrasonics | 3 | 179 | 1233 | 955 |
| 328 | Wildlife management | 22 | 178 | 148 | 288 |
| 328 | Malaria | 4 | 178 | 643 | 514 |
| 330 | Occupational Health | 27 | 175 | 197 | 562 |
| 330 | Food | 10 | 175 | 1767 | 2439 |
| 332 | Cosmochemistry | 5 | 173 | 717 | 710 |
| 332 | environmental exposure | 6 | 173 | 1345 | 1469 |
| 332 | Birth control | 13 | 173 | 137 | 296 |
| 335 | Linguistics | 36 | 172 | 336 | 676 |
| 335 | Ecological Genetics | 3 | 172 | 673 | 294 |
| 337 | Photography | 1 | 171 | 3621 | 504 |
| 337 | Public Policy | 6 | 171 | 1200 | 1233 |
| 339 | Research Design | 8 | 170 | 642 | 837 |
| 340 | Proteomics | 2 | 169 | 1402 | 986 |
| 341 | Behavioral research | 5 | 168 | 306 | 175 |
| 341 | Population | 16 | 168 | 350 | 655 |
| 341 | Cancer | 7 | 168 | 2498 | 3010 |
| 344 | natural products | 11 | 164 | 919 | 1125 |
| 345 | Contraception | 13 | 163 | 195 | 368 |
| 345 | Language and Education | 4 | 163 | 98 | 41 |
| 345 | Waste management | 4 | 163 | 1336 | 854 |
| 345 | drug evaluation | 4 | 163 | 1228 | 939 |
| 349 | Electronics | 9 | 162 | 2329 | 2372 |
| 350 | Magnetic Materials | 2 | 159 | 1801 | 1138 |
| 351 | Adolescent Psychology | 6 | 158 | 535 | 585 |
| 352 | Vocational Education | 5 | 156 | 345 | 268 |
| 353 | Indigenous Peoples | 23 | 155 | 14 | 25 |
| 354 | Industrial Safety | 26 | 154 | 184 | 753 |
| 354 | industrial hygiene | 26 | 154 | 197 | 455 |
| 354 | Sonochemistry | 2 | 154 | 750 | 646 |
| 357 | tests | 5 | 153 | 112 | 141 |
| 358 | Oral Medicine | 16 | 151 | 165 | 302 |
| 358 | Vocational guidance | 8 | 151 | 463 | 659 |
| 358 | Diplomatic relations | 16 | 151 | 229 | 178 |
| 361 | Climatology | 4 | 150 | 1551 | 1431 |
| 361 | Developmental Biology | 4 | 150 | 1709 | 1891 |
| 363 | Psychoneuroimmunology | 2 | 149 | 749 | 685 |
| 363 | Cytogenetics | 4 | 149 | 1349 | 1506 |
| 363 | Mental Health Services | 7 | 149 | 796 | 846 |
| 363 | Social policy | 2 | 149 | 1292 | 548 |
| 367 | Physical Therapy | 10 | 148 | 644 | 1020 |
| 367 | Carbon | 1 | 148 | 1933 | 1358 |
| 369 | Plant Genetics | 4 | 147 | 584 | 726 |
| 369 | Climate change | 2 | 147 | 1259 | 1412 |
| 369 | Water Purification | 3 | 147 | 1247 | 718 |
| 369 | Eutrophication | 2 | 147 | 1174 | 1393 |
| 373 | Human-Computer Interaction | 3 | 146 | 1616 | 1162 |
| 374 | Wetland ecology | 12 | 144 | 103 | 298 |
| 374 | Middle East | 25 | 144 | 173 | 394 |
| 376 | Neonatology | 5 | 142 | 419 | 403 |
| 376 | Histochemistry | 3 | 142 | 1085 | 761 |
| 378 | community development | 7 | 141 | 316 | 361 |
| 378 | world | 9 | 141 | 323 | 774 |
| 380 | Gender identity | 4 | 138 | 238 | 92 |
| 381 | Oncology | 6 | 137 | 1669 | 2567 |
| 381 | Quality of life | 10 | 137 | 695 | 1366 |
| 383 | global environmental change | 6 | 136 | 528 | 895 |
| 383 | Seaweed | 12 | 136 | 230 | 509 |
| 385 | Evidence-Based Medicine | 3 | 135 | 1354 | 882 |
| 386 | Immunology | 4 | 134 | 3374 | 3479 |
| 387 | Semiconductors | 3 | 133 | 2096 | 1311 |
| 387 | Youth | 10 | 133 | 316 | 560 |
| 387 | food industry | 3 | 133 | 619 | 344 |
| 387 | freshwater biology | 6 | 133 | 645 | 730 |
| 391 | Environmental Education | 3 | 131 | 359 | 228 |
| 391 | Composite Materials | 2 | 131 | 2975 | 2431 |
| 393 | Genetic Toxicology | 1 | 130 | 892 | 511 |
| 393 | Chromosomes | 1 | 130 | 1542 | 933 |
| 393 | Solar System | 6 | 130 | 559 | 667 |
| 396 | Evolutionary Genetics | 4 | 127 | 568 | 547 |
| 396 | Petrology | 10 | 127 | 555 | 799 |
| 396 | Molecular Epidemiology | 4 | 127 | 568 | 547 |
| 396 | Renewable Energy Sources | 3 | 127 | 2657 | 2954 |
| 396 | Jurisprudence | 3 | 127 | 931 | 606 |
| 396 | plant communities | 3 | 127 | 1087 | 1116 |
| 402 | sexual orientation | 3 | 126 | 99 | 46 |
| 402 | Organometallic compounds | 6 | 126 | 916 | 962 |
| 404 | Adult Education | 10 | 125 | 227 | 273 |
| 404 | disabilities | 9 | 125 | 356 | 530 |
| 406 | Energy Storage | 5 | 124 | 1018 | 1055 |
| 406 | foreign policy | 6 | 124 | 141 | 56 |
| 408 | Clinical Pharmacology | 4 | 123 | 1285 | 1188 |
| 408 | Radioisotopes | 9 | 123 | 637 | 681 |
| 410 | Marine Geology | 6 | 122 | 414 | 502 |
| 411 | Bioinformatics | 11 | 119 | 1133 | 1877 |
| 412 | Biogeochemistry | 3 | 117 | 1100 | 1187 |
| 413 | Biosensors | 5 | 116 | 996 | 1647 |
| 413 | Theology | 46 | 116 | 88 | 91 |
| 413 | Cardiovascular system | 2 | 116 | 1791 | 1851 |
| 413 | Sports | 13 | 116 | 927 | 1335 |
| 417 | Petroleum Geology | 3 | 115 | 543 | 498 |
| 418 | Community Psychology | 6 | 114 | 359 | 486 |
| 418 | Periglacial processes | 6 | 114 | 69 | 130 |
| 418 | Molecular ecology | 2 | 114 | 1277 | 1349 |
| 418 | Permafrost | 6 | 114 | 69 | 130 |
| 418 | Frozen ground | 6 | 114 | 73 | 130 |
| 423 | Plant diseases | 5 | 112 | 1558 | 1546 |
| 424 | Structural biology | 3 | 111 | 51 | 66 |
| 424 | Coral reef biology | 1 | 111 | 508 | 320 |
| 424 | Japan | 5 | 111 | 1632 | 1350 |
| 424 | race relations | 5 | 111 | 420 | 393 |
| 428 | Algebra | 26 | 110 | 489 | 716 |
| 428 | Multicultural Education | 3 | 110 | 371 | 198 |
| 428 | Parasitology | 11 | 110 | 1327 | 1974 |
| 428 | synthesis | 19 | 110 | 231 | 596 |
| 432 | Discourse Analysis | 6 | 109 | 210 | 280 |
| 432 | Housing | 2 | 109 | 578 | 436 |
| 434 | Bioenergetics | 2 | 108 | 1016 | 866 |
| 434 | Plant Ecology | 7 | 108 | 1180 | 1812 |
| 434 | Atmospheric Physics | 6 | 108 | 1133 | 1450 |
| 434 | Immunochemistry | 6 | 108 | 684 | 861 |
| 434 | libraries | 25 | 108 | 135 | 324 |
| 434 | immunoassay | 6 | 108 | 89 | 66 |
| 440 | biobanks | 4 | 107 | 89 | 66 |
| 441 | Organizational Behavior | 9 | 106 | 311 | 611 |
| 441 | carbon monoxide | 1 | 106 | 643 | 400 |
| 443 | Ore deposits | 4 | 105 | 451 | 483 |
| 443 | Amphibians | 11 | 105 | 83 | 108 |
| 445 | Atmospheric Chemistry | 3 | 103 | 873 | 1024 |
| 446 | commerce | 10 | 102 | 797 | 1244 |
| 447 | counseling | 15 | 101 | 494 | 1018 |
| 447 | Reptiles | 11 | 101 | 108 | 159 |
| 449 | Energy Conversion | 4 | 100 | 1119 | 1459 |
| 449 | System analysis | 3 | 100 | 2551 | 2045 |
| 449 | wetland management | 9 | 100 | 31 | 150 |
| 452 | Clinical Psychology | 4 | 97 | 1208 | 1506 |
| 452 | Bioelectronics | 3 | 97 | 1137 | 1612 |
| 452 | Social behavior | 4 | 97 | 997 | 1094 |
| 452 | rare diseases | 2 | 97 | 825 | 669 |
| 452 | Molecular structure | 8 | 97 | 1559 | 2150 |
| 457 | Educational Research | 9 | 96 | 7 | 46 |
| 457 | Ethnobotany | 3 | 96 | 211 | 244 |
| 457 | energy conservation | 8 | 96 | 1216 | 2400 |
| 457 | Mass Spectrometry | 2 | 96 | 1443 | 1082 |
| 457 | ethnobiology | 3 | 96 | 242 | 278 |
| 457 | Statistical physics | 3 | 96 | 3383 | 2811 |
| 457 | plankton | 3 | 96 | 203 | 199 |
| 457 | Administration | 8 | 96 | 12 | 44 |
| 457 | Ethnomedicine | 3 | 96 | 170 | 241 |
| 466 | Cosmology | 9 | 95 | 823 | 894 |
| 466 | Sexual health | 8 | 95 | 387 | 590 |
| 466 | Groundwater | 4 | 95 | 602 | 601 |
| 466 | Growth | 1 | 95 | 1725 | 1453 |
| 470 | Medical Ethics | 8 | 94 | 619 | 761 |
| 471 | Mental Health | 8 | 93 | 955 | 1399 |
| 471 | Cognition | 2 | 93 | 1840 | 1521 |
| 473 | Nanobiotechnology | 1 | 92 | 815 | 672 |
| 473 | Sedimentary rocks | 6 | 92 | 397 | 631 |
| 475 | Continuing Education | 8 | 91 | 187 | 220 |
| 475 | healthcare disparities | 4 | 91 | 355 | 432 |
| 477 | nuclear astrophysics | 8 | 90 | 245 | 454 |
| 478 | Mathematical Physics | 3 | 89 | 2867 | 2013 |
| 478 | Holistic Health | 8 | 89 | 182 | 335 |
| 478 | Zeolites | 5 | 89 | 690 | 1131 |
| 478 | allied health | 8 | 89 | 112 | 232 |
| 482 | Law | 52 | 88 | 221 | 592 |
| 482 | personality | 2 | 88 | 1617 | 1483 |
| 482 | Aging | 3 | 88 | 2840 | 2578 |
| 485 | Kidney diseases | 2 | 87 | 1151 | 987 |
| 486 | epilepsy | 1 | 86 | 1499 | 874 |
| 486 | embryonic development | 2 | 86 | 523 | 459 |
| 488 | Australia | 10 | 83 | 950 | 1586 |
| 488 | miniaturization | 6 | 83 | 1343 | 2120 |
| 490 | psychotherapy | 2 | 82 | 1546 | 1230 |
| 491 | Ethics | 4 | 81 | 800 | 720 |
| 491 | Language planning | 5 | 81 | 95 | 63 |
| 493 | health services | 4 | 80 | 918 | 1021 |
| 494 | Literature | 33 | 79 | 182 | 112 |
| 494 | Petroleum Engineering | 10 | 79 | 381 | 761 |
| 496 | Bioinorganic chemistry | 6 | 78 | 1026 | 1415 |
| 496 | urban health | 3 | 78 | 257 | 321 |
| 496 | biological factors | 8 | 78 | 1181 | 2002 |
| 499 | Liquid Crystals | 5 | 76 | 742 | 559 |
| 500 | Nutrition physiology | 7 | 74 | 422 | 890 |
| 501 | Travel | 7 | 73 | 461 | 751 |
| 501 | Action Research | 7 | 73 | 88 | 160 |
| 501 | Criticism | 31 | 73 | 24 | 65 |
| 504 | Pediatric Nursing | 3 | 72 | 355 | 331 |
| 504 | Obstetric Nursing | 3 | 72 | 209 | 209 |
| 504 | Plant genetic engineering | 10 | 72 | 461 | 1195 |
| 504 | Family | 5 | 72 | 689 | 880 |
| 508 | Ecohydrology | 6 | 71 | 187 | 382 |
| 509 | Neurophysiology | 2 | 70 | 3123 | 3154 |
| 509 | ethnicity | 7 | 70 | 400 | 527 |
| 509 | Social Change | 2 | 70 | 1219 | 1401 |
| 509 | marketing | 5 | 70 | 1433 | 1844 |
| 513 | Psychopharmacology | 1 | 69 | 2238 | 1799 |
| 513 | preventive medicine | 2 | 69 | 1489 | 1496 |
| 513 | Microscopy | 5 | 69 | 1293 | 1360 |
| 513 | Forest genetics | 1 | 69 | 611 | 285 |
| 513 | Meteorites | 3 | 69 | 857 | 1167 |
| 518 | Mixed methods research | 2 | 68 | 62 | 104 |
| 518 | Crystallography | 16 | 68 | 732 | 1120 |
| 518 | free radicals | 2 | 68 | 1592 | 1924 |
| 518 | Animal | 3 | 68 | 162 | 167 |
| 522 | Ophthalmology | 3 | 67 | 1746 | 1919 |
| 522 | Career development | 3 | 67 | 392 | 356 |
| 522 | Social perception | 1 | 67 | 206 | 158 |
| 522 | corrections | 1 | 67 | 310 | 129 |
| 522 | punishment | 1 | 67 | 203 | 88 |
| 527 | Nursing | 9 | 66 | 1018 | 1586 |
| 527 | Animal breeding | 4 | 66 | 659 | 800 |
| 527 | biofuels | 1 | 66 | 544 | 635 |
| 527 | ecosystem | 2 | 66 | 1567 | 1735 |
| 527 | Breeding | 4 | 66 | 1037 | 1374 |
| 527 | Primates | 9 | 66 | 384 | 752 |
| 533 | men | 3 | 65 | 279 | 306 |
| 533 | violence | 8 | 65 | 528 | 1040 |
| 535 | sanitation | 3 | 64 | 1583 | 2317 |
| 535 | Geobiology | 1 | 64 | 750 | 561 |
| 535 | Comparative Law | 25 | 64 | 15 | 47 |
| 535 | Social work | 10 | 64 | 675 | 1172 |
| 535 | Stress | 2 | 64 | 347 | 348 |
| 540 | Political Psychology | 1 | 63 | 551 | 461 |
| 540 | Religion and Psychology | 4 | 63 | 373 | 426 |
| 540 | Gerontology | 3 | 63 | 1971 | 1827 |
| 540 | clay | 1 | 63 | 1322 | 1158 |
| 544 | Transportation | 4 | 62 | 1423 | 1706 |
| 544 | Maternal health services | 2 | 62 | 470 | 465 |
| 544 | occupational diseases | 3 | 62 | 876 | 1170 |
| 547 | Anatomy | 6 | 61 | 1377 | 2071 |
| 547 | Engineering Mathematics | 8 | 61 | 1680 | 2081 |
| 547 | sustainability | 5 | 61 | 628 | 1276 |
| 547 | industrial relations | 5 | 61 | 596 | 743 |
| 551 | food contamination | 2 | 60 | 1348 | 1124 |
| 551 | Pesticides | 2 | 60 | 850 | 719 |
| 553 | Systems Analysis | 2 | 59 | 1378 | 1166 |
| 553 | Technological Innovations | 10 | 59 | 417 | 1225 |
| 555 | Applied Mathematics | 6 | 58 | 654 | 460 |
| 555 | Comparative Education | 5 | 58 | 152 | 185 |
| 555 | Randomized Controlled Trials | 3 | 58 | 1147 | 1087 |
| 555 | particles | 3 | 58 | 1038 | 1168 |
| 555 | Granular materials | 3 | 58 | 581 | 797 |
| 555 | mammals | 2 | 58 | 1272 | 1107 |
| 561 | Psychoanalysis | 2 | 57 | 476 | 217 |
| 561 | India | 10 | 57 | 675 | 980 |
| 563 | Pharmacogenetics | 6 | 56 | 655 | 1402 |
| 563 | Comparative Literature | 1 | 56 | 438 | 5 |
| 563 | Physical Chemistry | 2 | 56 | 2661 | 2479 |
| 563 | Enzyme inhibitors | 3 | 56 | 388 | 502 |
| 563 | space environment | 4 | 56 | 183 | 271 |
| 563 | drinking water | 5 | 56 | 66 | 103 |
| 563 | hygiene | 5 | 56 | 370 | 676 |
| 563 | mathematical analysis | 16 | 56 | 1233 | 1852 |
| 571 | Space telescopes | 1 | 55 | 372 | 190 |
| 572 | environmental indicators | 3 | 54 | 1143 | 1702 |
| 572 | Antibacterial agents | 1 | 54 | 1218 | 1087 |
| 572 | sex crimes | 5 | 54 | 454 | 748 |
| 572 | Catalysts | 3 | 54 | 699 | 819 |
| 576 | Ecophysiology | 1 | 53 | 501 | 319 |
| 576 | disarmament | 3 | 53 | 168 | 181 |
| 576 | Diagnostic microbiology | 2 | 53 | 1490 | 2057 |
| 576 | civilization | 9 | 53 | 746 | 464 |
| 576 | Chromatographic analysis | 4 | 53 | 1750 | 2082 |
| 576 | planning | 6 | 53 | 425 | 802 |
| 582 | Nephrology | 1 | 52 | 892 | 888 |
| 582 | Lexicography | 2 | 52 | 68 | 22 |
| 582 | Educational Psychology | 5 | 52 | 1046 | 1482 |
| 582 | Metallurgy | 3 | 52 | 2431 | 2414 |
| 582 | Photogrammetry | 6 | 52 | 545 | 451 |
| 582 | Visual Perception | 3 | 52 | 1620 | 2062 |
| 582 | Memory | 3 | 52 | 1747 | 2289 |
| 582 | Attention | 3 | 52 | 1679 | 2147 |
| 582 | Perception | 3 | 52 | 1772 | 2237 |
| 591 | Leadership | 2 | 51 | 618 | 757 |
| 591 | local government | 2 | 51 | 419 | 422 |
| 591 | Happiness | 4 | 51 | 313 | 657 |
| 591 | Television | 1 | 51 | 246 | 25 |
| 591 | Therapeutics | 5 | 51 | 1309 | 2486 |
| 591 | internet | 2 | 51 | 1897 | 1797 |
| 597 | Metabolism | 2 | 50 | 3209 | 3913 |
| 597 | Raman spectroscopy | 2 | 50 | 1015 | 1040 |
| 597 | Feminist psychology | 3 | 50 | 85 | 122 |
| 600 | Internet of Things | 1 | 49 | 1647 | 1388 |
| 600 | Physical organic chemistry | 2 | 49 | 1672 | 1614 |
| 600 | Mass Media | 15 | 49 | 325 | 608 |
| 600 | Marriage | 4 | 49 | 398 | 596 |
| 600 | Entrepreneurship | 5 | 49 | 750 | 1381 |
| 600 | economic conditions | 2 | 49 | 791 | 641 |
| 600 | genome | 4 | 49 | 1391 | 2392 |
| 600 | Metals | 2 | 49 | 2514 | 2423 |
| 600 | Vaccines | 3 | 49 | 1936 | 2514 |
| 609 | Agricultural Ecology | 1 | 48 | 1905 | 1815 |
| 609 | Sustainable agriculture | 1 | 48 | 1320 | 992 |
| 609 | Inclusive Education | 5 | 48 | 93 | 232 |
| 609 | food consumption | 1 | 48 | 142 | 128 |
| 609 | Integration | 5 | 48 | 91 | 229 |
| 614 | Anthropological Linguistics | 2 | 47 | 293 | 140 |
| 614 | Chromatography | 3 | 47 | 1756 | 2047 |
| 614 | Research methodology | 1 | 47 | 206 | 181 |
| 614 | X-ray crystallography | 3 | 47 | 628 | 636 |
| 614 | sustainable growth | 1 | 47 | 51 | 75 |
| 619 | Serology | 2 | 46 | 700 | 734 |
| 619 | symbiosis | 1 | 46 | 319 | 203 |
| 619 | Tourism | 3 | 46 | 1601 | 2056 |
| 619 | Synaptic Transmission | 3 | 46 | 469 | 746 |
| 619 | primary prevention | 1 | 46 | 756 | 623 |
| 619 | Entomology | 2 | 46 | 2755 | 2312 |
| 625 | Distance Education | 3 | 45 | 486 | 584 |
| 625 | peace | 2 | 45 | 584 | 591 |
| 625 | Psychophysiology | 1 | 45 | 3669 | 3454 |
| 628 | Geriatrics | 5 | 44 | 2323 | 3452 |
| 628 | Wetland conservation | 3 | 44 | 286 | 477 |
| 628 | Brain | 2 | 44 | 2897 | 3311 |
| 628 | Membranes | 1 | 44 | 2442 | 2429 |
| 628 | population geography | 4 | 44 | 311 | 525 |
| 628 | Wetlands | 3 | 44 | 302 | 480 |
| 634 | Analytical Biochemistry | 3 | 43 | 1859 | 2313 |
| 634 | Language and Culture | 6 | 43 | 56 | 135 |
| 634 | health and race | 2 | 43 | 294 | 349 |
| 634 | Cell surface receptors | 1 | 43 | 293 | 157 |
| 634 | Brain damage | 1 | 43 | 730 | 664 |
| 634 | Instructional systems | 3 | 43 | 156 | 209 |
| 634 | sexual behavior | 1 | 43 | 1117 | 923 |
| 641 | Control Theory | 2 | 42 | 2025 | 1882 |
| 642 | Biostatistics | 4 | 41 | 100 | 125 |
| 642 | Family Law | 10 | 41 | 2 | 27 |
| 642 | Forest Ecology | 1 | 41 | 1593 | 1546 |
| 642 | Forest Management | 1 | 41 | 1544 | 1466 |
| 646 | Restoration Ecology | 2 | 40 | 568 | 690 |
| 646 | older people | 4 | 40 | 1400 | 1633 |
| 646 | residential treatment | 1 | 40 | 299 | 219 |
| 646 | Condensed Matter | 3 | 40 | 3189 | 3303 |
| 650 | Applied Linguistics | 7 | 39 | 317 | 614 |
| 650 | Neurotoxicology | 2 | 39 | 722 | 1039 |
| 650 | Apoptosis | 2 | 39 | 342 | 544 |
| 650 | neurotoxins | 2 | 39 | 342 | 544 |
| 650 | Carcinogenesis | 2 | 39 | 1236 | 1673 |
| 650 | Neurotoxic agents | 2 | 39 | 342 | 544 |
| 650 | Urbanization | 1 | 39 | 496 | 285 |
| 650 | Luminescence | 2 | 39 | 1643 | 1609 |
| 650 | drug development | 2 | 39 | 1371 | 2123 |
| 650 | Radiation effects | 1 | 39 | 1087 | 1117 |
| 650 | Nerve regeneration | 2 | 39 | 342 | 544 |
| 661 | Environmental Geology | 4 | 38 | 1487 | 2269 |
| 661 | consumer behavior | 1 | 38 | 914 | 872 |
| 661 | ethnic groups | 2 | 38 | 430 | 505 |
| 661 | government | 2 | 38 | 785 | 604 |
| 661 | Work | 3 | 38 | 350 | 446 |
| 661 | proteins | 2 | 38 | 2521 | 2783 |
| 667 | Marine Ecology | 3 | 37 | 741 | 1033 |
| 667 | Quality Control | 4 | 37 | 1664 | 2595 |
| 667 | Emerging infectious diseases | 1 | 37 | 716 | 714 |
| 667 | Immunogenetics | 1 | 37 | 1158 | 1057 |
| 667 | gene therapy | 1 | 37 | 1786 | 1860 |
| 667 | International Education | 2 | 37 | 316 | 348 |
| 667 | Digital humanities | 2 | 37 | 121 | 145 |
| 667 | Solitons | 3 | 37 | 1124 | 1481 |
| 667 | Fractals | 3 | 37 | 1285 | 1582 |
| 667 | Chaos | 3 | 37 | 1124 | 1481 |
| 667 | Marine resources | 2 | 37 | 842 | 1091 |
| 667 | Stem cells | 3 | 37 | 1587 | 2322 |
| 667 | Islam | 11 | 37 | 179 | 425 |
| 667 | Genetic therapy | 1 | 37 | 1861 | 1946 |
| 667 | drug abuse | 3 | 37 | 639 | 905 |
| 682 | biomedicine | 1 | 36 | 1750 | 1504 |
| 682 | Flow cytometry | 1 | 36 | 757 | 731 |
| 682 | venom | 2 | 36 | 955 | 1174 |
| 682 | Toxins | 2 | 36 | 1066 | 1288 |
| 686 | Nuclear Chemistry | 6 | 35 | 784 | 1191 |
| 686 | Functional foods | 1 | 35 | 796 | 702 |
| 686 | Social welfare | 5 | 35 | 414 | 753 |
| 686 | Yeast | 2 | 35 | 560 | 781 |
| 690 | Geriatric Psychiatry | 1 | 34 | 1792 | 1650 |
| 690 | Theater | 15 | 34 | 55 | 60 |
| 690 | Immunopharmacology | 1 | 34 | 1777 | 1761 |
| 690 | Neuropharmacology | 1 | 34 | 1027 | 940 |
| 690 | Intellectual disability | 2 | 34 | 973 | 1104 |
| 695 | Artificial Intelligence | 3 | 33 | 3719 | 4514 |
| 695 | Development Economics | 1 | 33 | 826 | 686 |
| 695 | Drug delivery systems | 4 | 33 | 1340 | 2568 |
| 695 | families | 2 | 33 | 1048 | 1035 |
| 695 | Birds | 8 | 33 | 743 | 1310 |
| 695 | Recycling | 1 | 33 | 1025 | 1401 |
| 701 | Meteorology | 4 | 32 | 1941 | 3302 |
| 701 | Performing Arts | 12 | 32 | 49 | 54 |
| 701 | Behavioral Genetics | 1 | 32 | 397 | 445 |
| 701 | Operations Research | 1 | 32 | 3054 | 2625 |
| 701 | Coastal zone management | 1 | 32 | 1130 | 1118 |
| 701 | Surface-Active Agents | 1 | 32 | 1792 | 2017 |
| 701 | Geopolitics | 3 | 32 | 262 | 344 |
| 701 | Religion | 13 | 32 | 396 | 659 |
| 701 | Production Management | 1 | 32 | 1649 | 1791 |
| 701 | Watershed management | 3 | 32 | 187 | 323 |
| 701 | Proteome | 1 | 32 | 1847 | 2022 |
| 701 | Surface properties | 1 | 32 | 1867 | 2096 |
| 701 | Parasites | 4 | 32 | 1425 | 2245 |
| 701 | harm reduction | 2 | 32 | 258 | 359 |
| 701 | Investments | 2 | 32 | 738 | 746 |
| 716 | Psycholinguistics | 1 | 31 | 1417 | 1310 |
| 716 | economic development projects | 2 | 31 | 230 | 336 |
| 718 | Humanities | 8 | 30 | 1098 | 1867 |
| 718 | Mathematics Education | 9 | 30 | 187 | 494 |
| 718 | Counseling Psychology | 1 | 30 | 423 | 423 |
| 718 | preimplantation genetic diagnosis | 1 | 30 | 802 | 805 |
| 718 | embryo transfer | 1 | 30 | 826 | 821 |
| 718 | finance | 3 | 30 | 2278 | 2602 |
| 718 | masculinity | 1 | 30 | 195 | 222 |
| 725 | Organizational Sociology | 1 | 29 | 607 | 547 |
| 725 | Molecular Microbiology | 2 | 29 | 1015 | 1651 |
| 725 | organization | 1 | 29 | 1213 | 1233 |
| 725 | carbonate rocks | 3 | 29 | 119 | 151 |
| 725 | Bacterial diseases | 2 | 29 | 379 | 620 |
| 730 | Economic Geography | 1 | 28 | 667 | 582 |
| 730 | Wireless Communication Systems | 4 | 28 | 2111 | 2838 |
| 730 | Plastics | 2 | 28 | 2073 | 2330 |
| 730 | Metallography | 1 | 28 | 1350 | 1331 |
| 734 | Food Policy | 4 | 27 | 249 | 732 |
| 734 | Developmental Genetics | 1 | 27 | 793 | 1040 |
| 734 | Active Learning | 1 | 27 | 167 | 197 |
| 734 | Critical Legal Studies | 7 | 27 | 43 | 154 |
| 734 | monoclonal antibodies | 1 | 27 | 648 | 599 |
| 734 | Molecular Spectroscopy | 2 | 27 | 2072 | 2561 |
| 734 | carcinogens | 2 | 27 | 1263 | 1891 |
| 734 | shellfish | 1 | 27 | 323 | 273 |
| 742 | Microbial Biotechnology | 3 | 26 | 1043 | 1868 |
| 742 | Metacognition | 1 | 26 | 140 | 171 |
| 742 | air quality | 1 | 26 | 545 | 521 |
| 742 | forest policy | 1 | 26 | 639 | 682 |
| 742 | Microstructure | 2 | 26 | 1154 | 1191 |
| 742 | Antarctica | 3 | 26 | 522 | 757 |
| 742 | drug therapy | 4 | 26 | 1990 | 3649 |
| 742 | natural gas | 1 | 26 | 772 | 786 |
| 742 | biochemical markers | 2 | 26 | 1129 | 1551 |
| 751 | Data Mining | 3 | 25 | 1669 | 2864 |
| 751 | Neurobiology | 1 | 25 | 2477 | 2817 |
| 751 | Journalism | 7 | 25 | 328 | 629 |
| 751 | Hypertension | 1 | 25 | 2300 | 2715 |
| 751 | Immunopathology | 2 | 25 | 1511 | 2198 |
| 751 | Nationalism | 4 | 25 | 276 | 414 |
| 751 | poverty | 2 | 25 | 533 | 856 |
| 751 | transgenic organisms | 1 | 25 | 570 | 687 |
| 751 | Marine biodiversity | 3 | 25 | 265 | 355 |
| 751 | transgenic animals | 1 | 25 | 549 | 664 |
| 751 | civil society | 2 | 25 | 71 | 86 |
| 751 | Public opinion | 1 | 25 | 716 | 753 |
| 751 | Transgenic plants | 1 | 25 | 897 | 1074 |
| 751 | Cell survival | 1 | 25 | 467 | 575 |
| 751 | Ultrasonic Imaging | 1 | 25 | 900 | 928 |
| 751 | data collection | 3 | 25 | 1059 | 2079 |
| 751 | plant viruses | 1 | 25 | 396 | 422 |
| 751 | biological agents | 4 | 25 | 597 | 540 |
| 751 | national security | 5 | 25 | 265 | 391 |
| 751 | crime | 26 | 25 | 144 | 791 |
| 751 | Structure-activity relationship | 1 | 25 | 878 | 685 |
| 751 | Ultrasound | 1 | 25 | 1225 | 1287 |
| 751 | molecular chaperones | 1 | 25 | 516 | 579 |
| 774 | Paleoclimatology | 1 | 24 | 1491 | 1658 |
| 774 | Paleoecology | 1 | 24 | 1437 | 1569 |
| 774 | Paleogeography | 1 | 24 | 1284 | 1455 |
| 774 | Parenteral nutrition | 1 | 24 | 1514 | 1799 |
| 774 | Federal government | 4 | 24 | 120 | 258 |
| 774 | Education history | 2 | 24 | 107 | 75 |
| 774 | Literacy | 2 | 24 | 339 | 416 |
| 781 | Cloud Computing | 1 | 23 | 687 | 729 |
| 781 | Special Education | 3 | 23 | 739 | 1009 |
| 781 | Pharmaceutical Technology | 2 | 23 | 1907 | 2593 |
| 781 | International Law | 16 | 23 | 91 | 263 |
| 781 | Pharmacokinetics | 2 | 23 | 1247 | 1791 |
| 781 | Health insurance | 3 | 23 | 438 | 770 |
| 781 | disease outbreaks | 1 | 23 | 926 | 1142 |
| 781 | Epidemics | 1 | 23 | 870 | 1123 |
| 789 | Neurology | 4 | 22 | 4546 | 7340 |
| 789 | Neuropsychology | 2 | 22 | 2585 | 3496 |
| 789 | Ecological Engineering | 1 | 22 | 1150 | 1510 |
| 789 | Medical Oncology | 1 | 22 | 2655 | 3054 |
| 789 | Demography | 3 | 22 | 704 | 1201 |
| 789 | Political Sociology | 3 | 22 | 442 | 658 |
| 789 | Water Microbiology | 3 | 22 | 467 | 1086 |
| 789 | Parasitic Diseases | 2 | 22 | 2411 | 3315 |
| 789 | Military readiness | 3 | 22 | 55 | 60 |
| 789 | mutagens | 1 | 22 | 1336 | 1690 |
| 789 | Scandinavia | 4 | 22 | 609 | 1280 |
| 789 | ecotourism | 2 | 22 | 293 | 553 |
| 789 | statutes | 12 | 22 | 1 | 4 |
| 802 | Infrared spectroscopy | 1 | 21 | 680 | 770 |
| 802 | Developmental Immunology | 2 | 21 | 1036 | 1597 |
| 802 | Marine algae | 7 | 21 | 49 | 278 |
| 805 | Nanochemistry | 3 | 20 | 1319 | 2116 |
| 805 | School Psychology | 3 | 20 | 426 | 810 |
| 805 | Androgens | 1 | 20 | 429 | 572 |
| 808 | Computer Science | 9 | 19 | 1274 | 3082 |
| 808 | Neurochemistry | 1 | 19 | 3231 | 3738 |
| 808 | Econometrics | 15 | 19 | 558 | 1777 |
| 808 | Topology | 9 | 19 | 159 | 399 |
| 808 | Education policy | 2 | 19 | 99 | 212 |
| 808 | Urban agriculture | 2 | 19 | 7 | 13 |
| 808 | Genetic testing | 1 | 19 | 719 | 694 |
| 808 | Biomarkers | 1 | 19 | 898 | 993 |
| 808 | Language teaching | 1 | 19 | 135 | 168 |
| 808 | second language | 1 | 19 | 135 | 168 |
| 808 | Southeast Asia | 4 | 19 | 320 | 575 |
| 808 | Sun | 2 | 19 | 436 | 582 |
| 820 | Agricultural Science | 1 | 18 | 411 | 647 |
| 820 | Planetary Science | 3 | 18 | 537 | 853 |
| 820 | Language Acquisition | 2 | 18 | 507 | 712 |
| 820 | Environmental Psychology | 1 | 18 | 640 | 886 |
| 820 | Environmental Geochemistry | 1 | 18 | 1067 | 1252 |
| 820 | Political Participation | 2 | 18 | 412 | 560 |
| 820 | Citizenship | 2 | 18 | 182 | 316 |
| 820 | school sports | 1 | 18 | 209 | 265 |
| 820 | Minerals | 1 | 18 | 1381 | 1565 |
| 829 | Manufacturing Processes | 2 | 17 | 2650 | 3375 |
| 829 | Educational Sociology | 1 | 17 | 637 | 621 |
| 829 | Disability Studies | 1 | 17 | 549 | 528 |
| 829 | genre | 3 | 17 | 190 | 443 |
| 829 | Genetic Research | 2 | 17 | 196 | 454 |
| 829 | Ethnic relations | 3 | 17 | 592 | 845 |
| 829 | Plasma chemistry | 1 | 17 | 715 | 813 |
| 829 | Crystallization | 2 | 17 | 691 | 811 |
| 829 | Regionalism | 2 | 17 | 290 | 445 |
| 829 | Learning disabilities | 1 | 17 | 1245 | 1320 |
| 829 | Customary Law | 5 | 17 | 8 | 26 |
| 829 | Mineral resources | 1 | 17 | 1030 | 1329 |
| 829 | Chemical analysis | 1 | 17 | 1855 | 2178 |
| 829 | space warfare | 1 | 17 | 41 | 19 |
| 829 | Porous materials | 1 | 17 | 1296 | 1297 |
| 829 | water supply | 2 | 17 | 1120 | 1794 |
| 829 | Planets | 5 | 17 | 1174 | 2579 |
| 829 | Group Identity | 2 | 17 | 109 | 166 |
| 847 | American Literature | 9 | 16 | 287 | 167 |
| 847 | Infection control | 1 | 16 | 1169 | 1528 |
| 847 | Health care reform | 1 | 16 | 134 | 152 |
| 847 | drug resistance | 1 | 16 | 1371 | 1794 |
| 847 | Social Entrepreneurship | 1 | 16 | 281 | 423 |
| 847 | Bilingualism | 2 | 16 | 239 | 460 |
| 847 | Heritage Tourism | 1 | 16 | 278 | 349 |
| 847 | cultural tourism | 1 | 16 | 267 | 349 |
| 855 | Computer Graphics | 1 | 15 | 2597 | 2822 |
| 855 | Computational Chemistry | 1 | 15 | 1113 | 1281 |
| 855 | Animal Behavior | 3 | 15 | 1785 | 3259 |
| 855 | elder abuse | 1 | 15 | 539 | 736 |
| 855 | food handling | 1 | 15 | 1493 | 2042 |
| 855 | family violence | 1 | 15 | 726 | 938 |
| 861 | Cognitive Psychology | 3 | 14 | 415 | 698 |
| 861 | Agroforestry | 1 | 14 | 106 | 140 |
| 861 | Sedimentology | 1 | 14 | 1062 | 1267 |
| 861 | Fertilization | 1 | 14 | 139 | 191 |
| 861 | Mycology | 2 | 14 | 1926 | 2720 |
| 861 | Physical fitness | 2 | 14 | 1285 | 1889 |
| 861 | wildlife diseases | 3 | 14 | 138 | 368 |
| 861 | gametes | 1 | 14 | 139 | 191 |
| 869 | Graph Theory | 7 | 13 | 459 | 989 |
| 869 | Comparative Physiology | 2 | 13 | 911 | 1476 |
| 869 | Marine Biotechnology | 1 | 13 | 443 | 710 |
| 869 | Alkaloids | 1 | 13 | 53 | 102 |
| 869 | Ocean Engineering | 1 | 13 | 2319 | 2759 |
| 869 | Diffusion of innovations | 1 | 13 | 196 | 296 |
| 869 | Reproductive toxicology | 1 | 13 | 788 | 1133 |
| 869 | calcification | 1 | 13 | 872 | 1206 |
| 869 | Reading | 1 | 13 | 850 | 963 |
| 869 | Fluorescence | 2 | 13 | 599 | 963 |
| 869 | Multiple sclerosis | 1 | 13 | 1017 | 1089 |
| 869 | environmental issues | 1 | 13 | 817 | 1196 |
| 881 | Social Ethics | 2 | 12 | 277 | 344 |
| 881 | Nonlinear Dynamics | 1 | 12 | 2806 | 3135 |
| 881 | Integrative Medicine | 1 | 12 | 576 | 606 |
| 881 | Marine Geophysics | 4 | 12 | 207 | 613 |
| 881 | Marine mineral resources | 4 | 12 | 122 | 371 |
| 881 | Human Security | 1 | 12 | 37 | 61 |
| 881 | Cell differentiation | 1 | 12 | 2478 | 3360 |
| 881 | Genetic regulation | 1 | 12 | 1840 | 2356 |
| 881 | Electrophysiology | 1 | 12 | 1670 | 1906 |
| 881 | Minority Health | 1 | 12 | 209 | 242 |
| 881 | Personality Assessment | 1 | 12 | 840 | 1122 |
| 881 | Seabed | 4 | 12 | 122 | 371 |
| 881 | cloning | 1 | 12 | 1088 | 1550 |
| 894 | Criminology | 2 | 11 | 1049 | 1428 |
| 894 | Clinical Immunology | 1 | 11 | 1974 | 2587 |
| 894 | Stochastic Processes | 3 | 11 | 936 | 1634 |
| 894 | Geodynamics | 1 | 11 | 1228 | 1505 |
| 894 | Inflammation | 1 | 11 | 2033 | 2786 |
| 894 | Employee selection | 1 | 11 | 237 | 360 |
| 894 | Reservoirs | 1 | 11 | 367 | 477 |
| 894 | lakes | 1 | 11 | 176 | 243 |
| 894 | Invertebrates | 2 | 11 | 755 | 1356 |
| 894 | human migration | 3 | 11 | 33 | 74 |
| 894 | Nonprofit organizations | 1 | 11 | 591 | 828 |
| 894 | Combinatorial analysis | 6 | 11 | 765 | 1296 |
| 894 | Chemical industry | 2 | 11 | 1697 | 2392 |
| 894 | Cognitive Learning | 2 | 11 | 157 | 323 |
| 894 | child behavior | 2 | 11 | 453 | 842 |
| 894 | Suicide | 1 | 11 | 960 | 1305 |
| 894 | children | 2 | 11 | 637 | 1078 |
| 911 | Statistics | 8 | 10 | 1718 | 3660 |
| 911 | Hematology | 1 | 10 | 3844 | 4270 |
| 911 | Differential Equations | 2 | 10 | 1157 | 1433 |
| 911 | Cultural diversity | 1 | 10 | 272 | 437 |
| 911 | Bioacoustics | 1 | 10 | 208 | 295 |
| 911 | Legislative Power | 2 | 10 | 75 | 170 |
| 911 | Inorganic Polymers | 1 | 10 | 59 | 92 |
| 911 | arms control | 1 | 10 | 174 | 177 |
| 911 | Renaissance | 1 | 10 | 435 | 226 |
| 911 | curriculum evaluation | 1 | 10 | 594 | 793 |
| 911 | press | 5 | 10 | 43 | 142 |
| 911 | Government agencies | 1 | 10 | 104 | 177 |
| 911 | Organometallic polymers | 1 | 10 | 59 | 92 |
| 911 | strategy | 2 | 10 | 255 | 315 |
| 911 | civil service | 1 | 10 | 618 | 732 |
| 926 | Arts | 3 | 9 | 522 | 577 |
| 926 | Dermatology | 1 | 9 | 2482 | 2989 |
| 926 | Physical Geography | 1 | 9 | 1038 | 1203 |
| 926 | Emergency Nursing | 1 | 9 | 288 | 455 |
| 926 | Environmental Ethics | 2 | 9 | 209 | 343 |
| 926 | Public Health Administration | 2 | 9 | 495 | 773 |
| 926 | Plant Morphology | 2 | 9 | 768 | 1333 |
| 926 | Digital Media | 3 | 9 | 176 | 485 |
| 926 | Semantics | 3 | 9 | 223 | 511 |
| 926 | African Literature | 3 | 9 | 37 | 19 |
| 926 | Material Culture | 2 | 9 | 162 | 300 |
| 926 | Diagnosis | 1 | 9 | 1229 | 1664 |
| 926 | Heat Exchangers | 1 | 9 | 1809 | 2501 |
| 926 | Electron Microscopy | 1 | 9 | 701 | 905 |
| 926 | Synthetic biology | 1 | 9 | 592 | 860 |
| 926 | Business | 3 | 9 | 2252 | 3670 |
| 926 | Moon | 1 | 9 | 329 | 356 |
| 926 | herbs | 1 | 9 | 165 | 240 |
| 926 | software | 1 | 9 | 1763 | 2442 |
| 945 | Information Systems | 1 | 8 | 2465 | 3206 |
| 945 | Critical Care | 1 | 8 | 2368 | 3219 |
| 945 | Cryptography | 1 | 8 | 1128 | 1116 |
| 945 | Social History | 2 | 8 | 655 | 770 |
| 945 | Discrete Mathematics | 4 | 8 | 267 | 545 |
| 945 | emergency management | 1 | 8 | 1554 | 2155 |
| 945 | Subjectivity | 2 | 8 | 41 | 104 |
| 945 | Critical Discourse Analysis | 1 | 8 | 106 | 195 |
| 945 | Bioethics | 3 | 8 | 908 | 1761 |
| 945 | Politics | 1 | 8 | 970 | 827 |
| 945 | Drug design | 2 | 8 | 2229 | 3602 |
| 945 | Dance therapy | 1 | 8 | 330 | 442 |
| 945 | social justice | 1 | 8 | 662 | 697 |
| 945 | Coding Theory | 1 | 8 | 606 | 635 |
| 945 | Ceramic materials | 1 | 8 | 2045 | 2545 |
| 945 | Applied Ethics | 1 | 8 | 273 | 313 |
| 945 | Family Therapy | 1 | 8 | 1112 | 1462 |
| 945 | graph | 4 | 8 | 267 | 545 |
| 945 | Communication in medicine | 1 | 8 | 890 | 1290 |
| 945 | Mitochondrial DNA | 1 | 8 | 465 | 516 |
| 945 | Biomolecules | 1 | 8 | 841 | 1319 |
| 945 | Human Resources | 1 | 8 | 786 | 1220 |
| 945 | Steroids | 2 | 8 | 1193 | 2140 |
| 945 | Missions | 3 | 8 | 49 | 41 |
| 945 | biopolymers | 1 | 8 | 1835 | 2358 |
| 945 | Nanotubes | 1 | 8 | 426 | 563 |
| 945 | Marriage counseling | 1 | 8 | 529 | 756 |
| 945 | Isotopes | 1 | 8 | 272 | 441 |
| 945 | language | 2 | 8 | 1008 | 1601 |
| 974 | Electrical Engineering | 4 | 7 | 3303 | 5032 |
| 974 | World History | 2 | 7 | 251 | 282 |
| 974 | Industrial Sociology | 1 | 7 | 280 | 431 |
| 974 | Pharmacogenomics | 3 | 7 | 305 | 1024 |
| 974 | Precision medicine | 3 | 7 | 203 | 634 |
| 974 | infrared radiation | 1 | 7 | 1064 | 1370 |
| 974 | Food additives | 1 | 7 | 1907 | 2660 |
| 974 | agricultural policy | 1 | 7 | 441 | 802 |
| 974 | Business Ethics | 1 | 7 | 1436 | 1975 |
| 974 | Service Learning | 2 | 7 | 50 | 55 |
| 974 | Nuclear disarmament | 1 | 7 | 29 | 22 |
| 974 | Calorimetry | 1 | 7 | 1900 | 2402 |
| 974 | visualization | 2 | 7 | 2022 | 2435 |
| 974 | Broadcasting | 1 | 7 | 345 | 496 |
| 974 | feeding behavior | 1 | 7 | 1122 | 1751 |
| 974 | Migration | 1 | 7 | 399 | 542 |
| 974 | Genetic markers | 1 | 7 | 577 | 979 |
| 974 | Parkinson's disease | 1 | 7 | 433 | 751 |
| 974 | prostaglandins | 1 | 7 | 709 | 1040 |
| 974 | Post-traumatic stress disorder | 2 | 7 | 932 | 1757 |
| 974 | rivers | 3 | 7 | 303 | 867 |
| 974 | diseases | 1 | 7 | 625 | 1081 |
| 974 | Thermal analysis | 1 | 7 | 1900 | 2402 |
| 974 | Appetite | 1 | 7 | 996 | 1586 |
| 974 | Genes | 1 | 7 | 1921 | 2605 |
| 999 | Systems Engineering | 1 | 6 | 3388 | 3940 |
| 999 | Rheumatology | 1 | 6 | 1784 | 2374 |