| 1 | Energy Policy | 119 | 7.4K | 171 | 128 |
| 2 | energy resources | 82 | 5.7K | 58 | 73 |
| 3 | Human genetics | 20 | 5.6K | 928 | 731 |
| 4 | Economics | 139 | 3.9K | 493 | 449 |
| 5 | finance | 127 | 3.9K | 132 | 163 |
| 6 | International Finance | 116 | 3.7K | 50 | 53 |
| 7 | Physics | 142 | 3.5K | 1738 | 2747 |
| 8 | Science | 124 | 3.4K | 1690 | 2780 |
| 9 | Social Change | 31 | 3.3K | 96 | 34 |
| 10 | Telecommunication | 78 | 3.1K | 388 | 356 |
| 11 | computer networks | 95 | 3.0K | 217 | 193 |
| 12 | Renewable Energy Sources | 39 | 2.8K | 523 | 524 |
| 13 | Medicine | 162 | 2.8K | 1453 | 2406 |
| 14 | Biology | 61 | 2.5K | 2375 | 3074 |
| 15 | Ecology | 63 | 2.5K | 1439 | 1613 |
| 16 | Internet of Things | 50 | 2.5K | 138 | 111 |
| 17 | internet | 52 | 2.4K | 177 | 144 |
| 18 | Mineral resources | 79 | 2.3K | 4 | 14 |
| 19 | Tourism | 25 | 2.3K | 374 | 224 |
| 20 | Economic History | 81 | 2.2K | 386 | 323 |
| 21 | Research | 124 | 2.1K | 1390 | 2111 |
| 22 | Engineering | 98 | 1.9K | 476 | 505 |
| 23 | management | 45 | 1.9K | 755 | 744 |
| 24 | Business | 38 | 1.9K | 448 | 466 |
| 25 | Wireless Communication Systems | 84 | 1.9K | 297 | 380 |
| 26 | economic policy | 60 | 1.8K | 317 | 205 |
| 27 | Sustainable Development | 62 | 1.7K | 124 | 293 |
| 28 | United States | 31 | 1.7K | 1514 | 926 |
| 29 | Investment analysis | 41 | 1.7K | 51 | 37 |
| 30 | Environmental Health | 51 | 1.6K | 1247 | 1439 |
| 31 | Natural history | 2 | 1.4K | 4821 | 2626 |
| 32 | Mathematics | 148 | 1.4K | 890 | 1048 |
| 33 | Pollution | 41 | 1.4K | 1600 | 1902 |
| 34 | Environmental monitoring | 42 | 1.4K | 909 | 1102 |
| 35 | Australia | 32 | 1.3K | 386 | 191 |
| 36 | Environment | 26 | 1.3K | 1787 | 1993 |
| 37 | economic analysis | 26 | 1.3K | 14 | 5 |
| 38 | Chemistry | 45 | 1.3K | 3254 | 3625 |
| 39 | Genetics | 15 | 1.3K | 1885 | 1452 |
| 40 | Tribology | 57 | 1.3K | 137 | 170 |
| 41 | environmental pollution | 36 | 1.3K | 1305 | 1435 |
| 42 | Public Health | 74 | 1.2K | 927 | 1539 |
| 43 | Chemical Engineering | 38 | 1.2K | 1548 | 1647 |
| 44 | Artificial Intelligence | 67 | 1.2K | 642 | 1001 |
| 44 | Molecular Biology | 43 | 1.2K | 2648 | 3194 |
| 46 | Communication | 13 | 1.2K | 876 | 482 |
| 47 | Environmental Management | 21 | 1.1K | 1065 | 938 |
| 48 | Environmental Policy | 23 | 1.1K | 1067 | 1057 |
| 49 | Financial Institutions | 4 | 1.1K | 322 | 21 |
| 50 | Medical genetics | 25 | 1.1K | 1065 | 1201 |
| 51 | marketing | 26 | 1.1K | 532 | 528 |
| 52 | Information Technology | 10 | 1.1K | 1322 | 521 |
| 53 | Psychiatry | 64 | 1.0K | 889 | 1438 |
| 54 | environmental protection | 30 | 1.0K | 976 | 1023 |
| 54 | Business Ethics | 5 | 1.0K | 696 | 322 |
| 56 | Psychology | 67 | 926 | 878 | 1343 |
| 57 | Microbiology | 27 | 850 | 2585 | 2900 |
| 58 | drug therapy | 12 | 815 | 1212 | 776 |
| 59 | Chemotherapy | 10 | 812 | 769 | 383 |
| 60 | Computer-Aided Design | 10 | 788 | 594 | 241 |
| 61 | Materials | 14 | 774 | 3228 | 2483 |
| 62 | Intelligent Transportation Systems | 20 | 757 | 320 | 333 |
| 63 | Building Materials | 7 | 751 | 1151 | 702 |
| 64 | Computer Graphics | 8 | 744 | 1107 | 495 |
| 65 | Transnational corporations | 33 | 742 | 5 | 17 |
| 66 | energy conservation | 17 | 736 | 731 | 841 |
| 67 | Mental Disorders | 51 | 721 | 567 | 1233 |
| 68 | Pharmacology | 39 | 703 | 1698 | 2271 |
| 69 | Epidemiology | 46 | 696 | 832 | 1316 |
| 70 | Optics | 42 | 663 | 1456 | 1426 |
| 71 | Biomedical Engineering | 26 | 662 | 1834 | 2045 |
| 72 | Electrical Engineering | 21 | 652 | 1443 | 800 |
| 73 | Biochemistry | 34 | 630 | 3490 | 4248 |
| 73 | Physiology | 15 | 630 | 2042 | 1810 |
| 75 | Social Sciences | 35 | 597 | 776 | 828 |
| 76 | drugs | 4 | 595 | 2025 | 718 |
| 77 | Developing countries | 31 | 588 | 506 | 708 |
| 78 | coal | 13 | 585 | 771 | 728 |
| 79 | Analytical Chemistry | 9 | 579 | 2889 | 2032 |
| 80 | Information Science | 30 | 574 | 600 | 915 |
| 81 | Quantum electronics | 37 | 567 | 369 | 468 |
| 81 | Optoelectronic devices | 37 | 567 | 75 | 74 |
| 81 | lasers | 37 | 567 | 521 | 630 |
| 84 | Automation | 17 | 564 | 945 | 983 |
| 85 | Eating Disorders | 28 | 546 | 188 | 304 |
| 85 | Feeding and Eating Disorders | 28 | 546 | 173 | 287 |
| 87 | Sociology | 29 | 529 | 782 | 1041 |
| 88 | mass transfer | 30 | 518 | 463 | 696 |
| 89 | Financial Engineering | 19 | 514 | 4 | 13 |
| 90 | Biotechnology | 24 | 508 | 2359 | 3253 |
| 90 | Nutrition | 30 | 508 | 1360 | 2048 |
| 92 | Neurology | 24 | 507 | 2078 | 2741 |
| 93 | Money | 12 | 503 | 49 | 67 |
| 94 | Mobile Computing | 20 | 489 | 308 | 345 |
| 94 | Magnetic Materials | 4 | 489 | 1469 | 627 |
| 94 | Optical materials | 4 | 489 | 2316 | 1373 |
| 97 | Environmental Chemistry | 6 | 442 | 1574 | 1221 |
| 98 | Health Services Research | 14 | 436 | 691 | 629 |
| 99 | Computer Engineering | 14 | 435 | 272 | 158 |
| 99 | Fractals | 19 | 435 | 278 | 321 |
| 101 | Solitons | 18 | 434 | 293 | 321 |
| 101 | Chaos | 18 | 434 | 293 | 321 |
| 103 | Numerical Analysis | 44 | 418 | 440 | 711 |
| 104 | Biomass Energy | 21 | 411 | 855 | 1424 |
| 105 | Operations Research | 27 | 397 | 672 | 941 |
| 106 | Systems Engineering | 18 | 388 | 799 | 837 |
| 107 | Geophysics | 6 | 382 | 2715 | 1913 |
| 107 | cell interaction | 5 | 382 | 831 | 558 |
| 109 | Behavior | 11 | 381 | 1695 | 1888 |
| 110 | Biophysics | 16 | 380 | 2943 | 3254 |
| 111 | Telecommunication Systems | 21 | 364 | 459 | 502 |
| 112 | Medical Microbiology | 16 | 363 | 1031 | 1497 |
| 113 | North America | 12 | 357 | 325 | 224 |
| 114 | human behavior | 9 | 356 | 1375 | 1645 |
| 115 | Systems Biology | 5 | 353 | 1301 | 732 |
| 116 | Food service management | 5 | 352 | 272 | 247 |
| 117 | Educational Psychology | 5 | 344 | 1034 | 667 |
| 118 | Nursing | 11 | 340 | 943 | 592 |
| 118 | Learning | 13 | 340 | 554 | 618 |
| 120 | Structural design | 8 | 335 | 448 | 308 |
| 121 | Cytology | 10 | 332 | 2598 | 3010 |
| 122 | Bioengineering | 20 | 331 | 1806 | 3022 |
| 123 | Primary health care | 13 | 327 | 745 | 721 |
| 124 | city planning | 7 | 324 | 962 | 676 |
| 125 | Behavioral research | 31 | 317 | 14 | 82 |
| 126 | Microbial Ecology | 4 | 316 | 2025 | 1700 |
| 127 | Industrial Engineering | 9 | 305 | 1041 | 927 |
| 128 | Obesity | 8 | 300 | 1264 | 1337 |
| 129 | consumer behavior | 5 | 298 | 360 | 284 |
| 130 | Earth Sciences | 20 | 293 | 1299 | 1795 |
| 131 | Inflammation | 13 | 292 | 436 | 767 |
| 132 | Signal Transduction | 3 | 290 | 1544 | 1053 |
| 133 | Cognitive Science | 9 | 285 | 812 | 922 |
| 134 | Signal Processing | 13 | 283 | 1356 | 1538 |
| 135 | Urban Policy | 1 | 282 | 1369 | 388 |
| 136 | biological evolution | 4 | 276 | 1817 | 1499 |
| 137 | Quality Control | 7 | 275 | 1088 | 868 |
| 138 | Geriatrics | 6 | 270 | 2216 | 1623 |
| 139 | System analysis | 12 | 268 | 1130 | 1173 |
| 140 | Economic Development | 19 | 265 | 490 | 1064 |
| 140 | Mental illness | 5 | 265 | 1590 | 1452 |
| 142 | Biochemical Engineering | 6 | 264 | 2567 | 2864 |
| 143 | Astronomy | 5 | 262 | 2224 | 1868 |
| 144 | Molecular evolution | 3 | 259 | 1552 | 1028 |
| 145 | Multimedia Systems | 14 | 254 | 755 | 806 |
| 146 | China | 10 | 248 | 1672 | 1526 |
| 147 | Education | 24 | 247 | 1107 | 1544 |
| 148 | food technology | 6 | 246 | 1870 | 1646 |
| 149 | Mathematical Physics | 22 | 243 | 1078 | 1318 |
| 150 | commerce | 18 | 239 | 440 | 836 |
| 151 | Mental Health | 18 | 235 | 568 | 830 |
| 152 | Water | 8 | 234 | 1594 | 2017 |
| 153 | Energy Conversion | 1 | 231 | 1824 | 1154 |
| 154 | Genomics | 14 | 224 | 1608 | 2368 |
| 155 | personality | 6 | 222 | 972 | 997 |
| 156 | psychotherapy | 5 | 219 | 1003 | 822 |
| 157 | Image Processing | 7 | 218 | 1569 | 1534 |
| 157 | food handling | 4 | 218 | 764 | 598 |
| 159 | Materials Science | 6 | 213 | 3514 | 3083 |
| 160 | Ubiquitous computing | 5 | 212 | 130 | 24 |
| 161 | complementary therapies | 9 | 211 | 825 | 926 |
| 162 | econometric models | 4 | 210 | 513 | 317 |
| 163 | drug resistance | 10 | 209 | 268 | 502 |
| 164 | Environmental Engineering | 20 | 208 | 1480 | 2816 |
| 165 | Evidence-Based Medicine | 6 | 203 | 444 | 367 |
| 166 | Public Administration | 5 | 196 | 994 | 668 |
| 166 | Alternative Medicine | 8 | 196 | 838 | 953 |
| 168 | Public Relations | 3 | 195 | 429 | 192 |
| 169 | Nanotechnology | 17 | 194 | 2391 | 3685 |
| 169 | Cloud Computing | 5 | 194 | 199 | 169 |
| 171 | Earthquake Engineering | 6 | 192 | 982 | 930 |
| 171 | Water pollution | 4 | 192 | 2528 | 2240 |
| 171 | Neurophysiology | 7 | 192 | 1967 | 2214 |
| 174 | organization | 7 | 186 | 446 | 616 |
| 175 | medical education | 18 | 183 | 633 | 1046 |
| 176 | Ethnic relations | 12 | 182 | 188 | 212 |
| 176 | Developed countries | 1 | 182 | 450 | 154 |
| 178 | Pharmaceutical Chemistry | 8 | 181 | 2660 | 3001 |
| 179 | Human-Computer Interaction | 7 | 180 | 974 | 1028 |
| 179 | Smart Materials | 7 | 180 | 575 | 549 |
| 181 | Structural Engineering | 6 | 178 | 1200 | 1025 |
| 182 | Social policy | 8 | 177 | 517 | 476 |
| 182 | Sales management | 3 | 177 | 222 | 299 |
| 182 | selling | 3 | 177 | 222 | 299 |
| 185 | Toxicology | 16 | 176 | 2338 | 3795 |
| 185 | Consumer education | 8 | 176 | 115 | 243 |
| 187 | Solar Energy | 6 | 175 | 1336 | 1513 |
| 187 | Ocean Engineering | 5 | 175 | 1373 | 1231 |
| 187 | Fuzzy systems | 14 | 175 | 614 | 718 |
| 190 | Production Management | 5 | 174 | 844 | 1039 |
| 191 | Humanities | 15 | 164 | 552 | 653 |
| 192 | Public Policy | 7 | 163 | 1136 | 1294 |
| 192 | planning | 7 | 163 | 382 | 354 |
| 192 | Economic planning | 7 | 163 | 248 | 295 |
| 195 | Forecasting | 7 | 161 | 277 | 346 |
| 196 | Statistical physics | 12 | 160 | 1845 | 2232 |
| 197 | Botany | 6 | 159 | 2815 | 3035 |
| 198 | Process Control | 4 | 158 | 789 | 909 |
| 198 | Middle East | 24 | 158 | 171 | 365 |
| 200 | Dermatology | 15 | 157 | 811 | 1267 |
| 200 | Europe | 16 | 157 | 1328 | 1997 |
| 202 | Engineering Mathematics | 18 | 156 | 627 | 1008 |
| 203 | Health | 4 | 155 | 1977 | 1593 |
| 203 | Composite Materials | 6 | 155 | 2022 | 2299 |
| 205 | Quality of life | 7 | 153 | 942 | 1301 |
| 205 | Imaging systems | 4 | 153 | 712 | 317 |
| 207 | Ethnology | 4 | 152 | 1203 | 696 |
| 208 | concrete | 4 | 151 | 859 | 942 |
| 209 | Genetic Toxicology | 1 | 150 | 897 | 480 |
| 209 | Infection control | 3 | 150 | 352 | 246 |
| 209 | mutation | 1 | 150 | 1078 | 608 |
| 212 | Oncology | 5 | 145 | 1923 | 2596 |
| 212 | Surface Chemistry | 5 | 145 | 3023 | 2980 |
| 212 | Eastern Europe | 12 | 145 | 291 | 300 |
| 215 | International Business | 5 | 144 | 56 | 70 |
| 215 | software | 4 | 144 | 960 | 955 |
| 217 | Engineering Geology | 3 | 143 | 1446 | 1134 |
| 218 | Biocompatible Materials | 4 | 142 | 3301 | 3533 |
| 219 | Production Engineering | 6 | 140 | 1475 | 1301 |
| 220 | Colloids | 5 | 139 | 2961 | 3147 |
| 221 | Asia | 10 | 138 | 1535 | 1673 |
| 222 | mathematical analysis | 19 | 137 | 990 | 1236 |
| 223 | Combustion | 1 | 135 | 1938 | 998 |
| 223 | Nervous system | 8 | 135 | 1607 | 2365 |
| 223 | Allergy | 4 | 135 | 1091 | 1441 |
| 226 | Manufacturing Processes | 5 | 134 | 1903 | 1804 |
| 226 | Nationalism | 12 | 134 | 84 | 130 |
| 228 | Financial management | 3 | 133 | 506 | 476 |
| 228 | Communication in medicine | 2 | 133 | 624 | 386 |
| 230 | environmental indicators | 3 | 130 | 1195 | 1208 |
| 230 | Technology | 6 | 130 | 3021 | 3156 |
| 232 | Diagnostic Imaging | 3 | 129 | 2171 | 1655 |
| 233 | Computational Intelligence | 10 | 128 | 249 | 418 |
| 233 | Strategic planning | 2 | 128 | 921 | 600 |
| 235 | Metabolism | 3 | 126 | 2794 | 2885 |
| 235 | Tropical Medicine | 11 | 126 | 897 | 1350 |
| 237 | Journalism | 10 | 125 | 206 | 252 |
| 237 | Capital market | 6 | 125 | 240 | 351 |
| 237 | Human Resources | 4 | 125 | 357 | 473 |
| 240 | Intelligent Control Systems | 10 | 123 | 506 | 495 |
| 241 | Econometrics | 10 | 122 | 753 | 937 |
| 241 | Emergency Medicine | 7 | 122 | 937 | 982 |
| 241 | Securities | 6 | 122 | 146 | 285 |
| 244 | Green Technology | 5 | 119 | 216 | 263 |
| 245 | Detectors | 5 | 118 | 1225 | 1214 |
| 246 | Information Theory | 6 | 117 | 1025 | 1118 |
| 246 | Heat Exchangers | 6 | 117 | 907 | 1253 |
| 246 | Corporate governance | 5 | 117 | 381 | 535 |
| 249 | Hematology | 11 | 116 | 1617 | 2526 |
| 249 | Cytogenetics | 3 | 116 | 1537 | 1712 |
| 251 | Emotions | 2 | 114 | 682 | 647 |
| 252 | Water quality management | 3 | 113 | 1968 | 1474 |
| 253 | Nuclear Engineering | 5 | 112 | 1416 | 1105 |
| 253 | Nuclear Energy | 5 | 112 | 907 | 711 |
| 253 | Global Health | 11 | 112 | 494 | 790 |
| 253 | Holistic Health | 4 | 112 | 375 | 283 |
| 253 | Leukemia | 3 | 112 | 1090 | 1163 |
| 253 | Cement | 2 | 112 | 724 | 728 |
| 259 | Fiber Optics | 3 | 111 | 1067 | 852 |
| 259 | infection | 7 | 111 | 1184 | 1710 |
| 261 | Clinical Immunology | 4 | 109 | 1039 | 1177 |
| 261 | pain management | 2 | 109 | 811 | 549 |
| 261 | pain | 2 | 109 | 1715 | 1382 |
| 261 | stocks | 5 | 109 | 47 | 162 |
| 265 | consumers | 4 | 108 | 276 | 318 |
| 266 | Small Business | 2 | 107 | 841 | 912 |
| 267 | motivation | 1 | 105 | 599 | 305 |
| 267 | Emotion | 1 | 105 | 366 | 236 |
| 269 | Neural circuitry | 5 | 104 | 1613 | 1901 |
| 270 | Computer Vision | 2 | 103 | 1473 | 1250 |
| 271 | Pediatrics | 9 | 102 | 1439 | 2602 |
| 271 | Soil Mechanics | 5 | 102 | 889 | 1023 |
| 271 | Environmental Geochemistry | 4 | 102 | 424 | 434 |
| 271 | geological modeling | 13 | 102 | 147 | 403 |
| 271 | Minerals | 4 | 102 | 640 | 669 |
| 271 | Plants | 5 | 102 | 1633 | 2005 |
| 277 | Community Psychiatry | 4 | 101 | 864 | 1011 |
| 278 | Rock Mechanics | 4 | 99 | 794 | 869 |
| 279 | Cybernetics | 4 | 96 | 1409 | 1527 |
| 279 | Post-traumatic stress disorder | 4 | 96 | 640 | 787 |
| 281 | Computational Biology | 11 | 95 | 1363 | 2561 |
| 281 | Product Design | 2 | 95 | 695 | 377 |
| 283 | Hypertension | 5 | 94 | 1292 | 2030 |
| 284 | Traffic Engineering | 7 | 93 | 212 | 464 |
| 285 | air quality | 6 | 92 | 75 | 177 |
| 285 | Multiple sclerosis | 6 | 92 | 401 | 406 |
| 287 | Nutrition physiology | 4 | 91 | 641 | 817 |
| 288 | Decision making | 2 | 89 | 1856 | 1364 |
| 289 | Clinical Chemistry | 6 | 88 | 2294 | 3168 |
| 289 | Photochemistry | 3 | 88 | 1701 | 1659 |
| 289 | Technology Assessment | 3 | 88 | 388 | 545 |
| 289 | Organometallic chemistry | 8 | 88 | 1281 | 1609 |
| 289 | Photobiology | 3 | 88 | 1358 | 1316 |
| 294 | Online social networks | 1 | 86 | 669 | 252 |
| 294 | mental health promotion | 1 | 86 | 346 | 180 |
| 294 | Body Image | 1 | 86 | 381 | 294 |
| 294 | health planning | 7 | 86 | 1442 | 1935 |
| 298 | Cell adhesion | 2 | 85 | 213 | 229 |
| 298 | energy development | 5 | 85 | 605 | 1097 |
| 300 | Mycology | 5 | 84 | 1287 | 1618 |
| 301 | nanoscience | 8 | 83 | 1958 | 3097 |
| 301 | genome | 2 | 83 | 1979 | 2130 |
| 301 | Psychophysiology | 4 | 83 | 2376 | 2924 |
| 304 | Mathematics Education | 6 | 82 | 273 | 291 |
| 304 | Cell Biology | 7 | 82 | 2866 | 4610 |
| 304 | Parenteral nutrition | 4 | 82 | 884 | 1238 |
| 307 | Computer Science | 7 | 81 | 1373 | 1660 |
| 307 | Parasitology | 7 | 81 | 1563 | 2127 |
| 307 | Autism | 1 | 81 | 1164 | 871 |
| 310 | Social Psychology | 2 | 79 | 2506 | 2135 |
| 311 | Pharmacognosy | 4 | 78 | 1643 | 2158 |
| 311 | Health Policy | 3 | 78 | 2385 | 2402 |
| 311 | Medicinal plants | 4 | 78 | 1212 | 1725 |
| 311 | Bioinformatics | 10 | 78 | 1214 | 2251 |
| 315 | Integrative Medicine | 3 | 77 | 293 | 175 |
| 316 | Immunopathology | 4 | 76 | 1197 | 1521 |
| 316 | Computational Complexity | 6 | 76 | 680 | 764 |
| 318 | Mining Engineering | 3 | 75 | 588 | 547 |
| 318 | Food | 7 | 75 | 2149 | 3484 |
| 320 | Psychiatric Epidemiology | 2 | 74 | 640 | 728 |
| 320 | Liver diseases | 2 | 74 | 1707 | 1988 |
| 322 | Fluid Mechanics | 6 | 73 | 1150 | 1453 |
| 322 | Transportation | 4 | 73 | 1467 | 1674 |
| 324 | Diabetes mellitus | 4 | 72 | 1853 | 2631 |
| 324 | Teaching | 13 | 72 | 701 | 1415 |
| 324 | Semantic web | 5 | 72 | 54 | 147 |
| 324 | plant molecular biology | 3 | 72 | 1515 | 2035 |
| 324 | Diabetes | 4 | 72 | 1967 | 2720 |
| 329 | Health Services Administration | 2 | 71 | 1469 | 1236 |
| 329 | Dynamics | 9 | 71 | 855 | 1264 |
| 329 | health workforce | 2 | 71 | 239 | 316 |
| 329 | Radiation | 4 | 71 | 2068 | 2044 |
| 329 | Diet | 6 | 71 | 1482 | 2798 |
| 334 | Ethics | 4 | 70 | 769 | 792 |
| 334 | Electronics | 4 | 70 | 3328 | 3430 |
| 336 | vibration | 6 | 69 | 846 | 1212 |
| 336 | Nutritional support | 1 | 69 | 325 | 282 |
| 338 | Software Maintenance | 2 | 68 | 265 | 132 |
| 338 | Solid State Chemistry | 3 | 68 | 2436 | 2331 |
| 338 | Calorimetry | 8 | 68 | 634 | 1107 |
| 338 | violence | 3 | 68 | 910 | 1042 |
| 338 | sex crimes | 2 | 68 | 755 | 687 |
| 338 | Thermal analysis | 8 | 68 | 634 | 1107 |
| 344 | Hydrology | 5 | 67 | 2004 | 2532 |
| 344 | Production Planning | 3 | 67 | 246 | 394 |
| 344 | Boundary Value Problems | 2 | 67 | 945 | 692 |
| 344 | Production Control | 3 | 67 | 241 | 392 |
| 344 | Enteral nutrition | 3 | 67 | 862 | 1181 |
| 349 | Waste management | 3 | 66 | 1535 | 1502 |
| 349 | Women's health | 6 | 66 | 882 | 1436 |
| 351 | Radiologic Technology | 5 | 65 | 89 | 111 |
| 351 | Interventional Radiology | 5 | 65 | 89 | 111 |
| 351 | Entrepreneurship | 4 | 65 | 765 | 1244 |
| 351 | Interventional Radiography | 5 | 65 | 89 | 111 |
| 351 | Endoscopic Surgery | 5 | 65 | 89 | 111 |
| 351 | Wales | 4 | 65 | 61 | 36 |
| 357 | Geology | 4 | 64 | 2530 | 2824 |
| 357 | Land use | 4 | 64 | 970 | 1443 |
| 359 | Biopharmaceutics | 3 | 63 | 1173 | 1501 |
| 359 | Environmental Economics | 2 | 63 | 517 | 431 |
| 359 | Highway Engineering | 6 | 63 | 240 | 407 |
| 359 | Child | 8 | 63 | 1481 | 2558 |
| 359 | Carbon | 3 | 63 | 1372 | 1915 |
| 359 | Disease | 1 | 63 | 669 | 821 |
| 365 | Environmental Microbiology | 2 | 62 | 1755 | 2118 |
| 365 | Infections | 4 | 62 | 1060 | 1701 |
| 365 | soil microbiology | 2 | 62 | 1795 | 2265 |
| 365 | health services | 8 | 62 | 609 | 1246 |
| 369 | Fracture mechanics | 2 | 61 | 1745 | 1530 |
| 369 | Tunneling | 1 | 61 | 597 | 550 |
| 369 | underground construction | 1 | 61 | 597 | 550 |
| 369 | Europa | 2 | 61 | 607 | 584 |
| 373 | Histology | 2 | 60 | 2237 | 2334 |
| 373 | Psychiatric Nursing | 5 | 60 | 479 | 677 |
| 373 | Drug design | 6 | 60 | 1097 | 2040 |
| 373 | eugenics | 2 | 60 | 727 | 688 |
| 377 | Water Purification | 1 | 59 | 2033 | 1313 |
| 377 | Sales Promotion | 3 | 59 | 77 | 81 |
| 379 | Travel | 5 | 58 | 618 | 887 |
| 379 | Behavioral Finance | 2 | 58 | 67 | 72 |
| 379 | Entropy | 2 | 58 | 1453 | 1084 |
| 379 | Bacterial infections | 4 | 58 | 722 | 1413 |
| 383 | Organizational Behavior | 1 | 57 | 840 | 781 |
| 383 | Parasitic Diseases | 3 | 57 | 1993 | 2385 |
| 385 | Swarm Intelligence | 3 | 56 | 275 | 437 |
| 385 | cell physiology | 3 | 56 | 1593 | 2252 |
| 385 | Spectrum analysis | 5 | 56 | 3504 | 4432 |
| 388 | radioactive waste | 1 | 55 | 1433 | 1580 |
| 388 | industrial waste | 1 | 55 | 1474 | 1577 |
| 388 | Hazardous waste | 1 | 55 | 1649 | 1650 |
| 391 | Financial Regulation | 3 | 54 | 28 | 22 |
| 391 | solar power | 2 | 54 | 1109 | 1336 |
| 391 | Bioinorganic chemistry | 2 | 54 | 1614 | 1582 |
| 391 | Water Microbiology | 2 | 54 | 638 | 699 |
| 391 | solar cells | 2 | 54 | 1207 | 1457 |
| 391 | Fungi | 3 | 54 | 1047 | 1347 |
| 397 | Neonatology | 1 | 53 | 1092 | 798 |
| 397 | Natural resources | 1 | 53 | 1286 | 1064 |
| 397 | Child Development | 1 | 53 | 2902 | 2397 |
| 397 | Adolescent | 8 | 53 | 1278 | 2357 |
| 397 | Lipids | 3 | 53 | 1390 | 1955 |
| 397 | industrial relations | 3 | 53 | 808 | 811 |
| 403 | Virtual reality | 1 | 52 | 796 | 521 |
| 403 | Crystallography | 2 | 52 | 1974 | 1274 |
| 405 | Marine Biology | 2 | 51 | 2955 | 3002 |
| 405 | Marine Pollution | 2 | 51 | 1558 | 1807 |
| 405 | Molecular structure | 8 | 51 | 1569 | 2754 |
| 405 | Gastrointestinal diseases | 2 | 51 | 903 | 856 |
| 409 | Dietetics | 3 | 50 | 657 | 730 |
| 410 | Polymers | 5 | 49 | 3587 | 4574 |
| 410 | Consumer Protection | 1 | 49 | 374 | 271 |
| 410 | Plant hormones | 2 | 49 | 401 | 499 |
| 410 | polymerization | 5 | 49 | 3110 | 3906 |
| 410 | Egypt | 4 | 49 | 450 | 845 |
| 415 | Measurement | 5 | 48 | 1094 | 1657 |
| 415 | feeding behavior | 5 | 48 | 538 | 1122 |
| 415 | Islam | 4 | 48 | 347 | 360 |
| 418 | Laser therapy | 5 | 47 | 328 | 487 |
| 418 | Metabolic diseases | 2 | 47 | 2742 | 3404 |
| 418 | Metabolic syndrome | 2 | 47 | 372 | 420 |
| 421 | Mechanical Engineering | 5 | 46 | 2112 | 2401 |
| 421 | Emergency Medical Services | 2 | 46 | 922 | 893 |
| 421 | sanitation | 1 | 46 | 2344 | 2620 |
| 421 | sustainability | 7 | 46 | 492 | 1485 |
| 425 | Petroleum Engineering | 3 | 45 | 817 | 1007 |
| 425 | Genetic engineering | 3 | 45 | 2336 | 3165 |
| 425 | Molecular cloning | 3 | 45 | 1582 | 2023 |
| 425 | Genetic recombination | 3 | 45 | 1555 | 2000 |
| 425 | Recombinant DNA | 3 | 45 | 1652 | 2118 |
| 430 | Surgery | 4 | 44 | 1691 | 2701 |
| 430 | Meteorology | 2 | 44 | 2625 | 3128 |
| 430 | Climatology | 2 | 44 | 2042 | 2265 |
| 430 | Solid State Physics | 4 | 44 | 3293 | 3745 |
| 430 | Ethnic Conflict | 2 | 44 | 324 | 388 |
| 430 | bioclimatology | 2 | 44 | 1160 | 1290 |
| 430 | forced migration | 2 | 44 | 324 | 388 |
| 430 | refugees | 7 | 44 | 101 | 318 |
| 430 | race relations | 3 | 44 | 575 | 650 |
| 439 | Algorithms | 3 | 43 | 723 | 761 |
| 439 | ethnicity | 8 | 43 | 337 | 690 |
| 439 | Sports | 2 | 43 | 2320 | 2062 |
| 439 | Cardiovascular diseases | 1 | 43 | 2694 | 2128 |
| 439 | Condensed Matter | 2 | 43 | 3100 | 3038 |
| 444 | Statistics | 1 | 42 | 3729 | 2567 |
| 444 | diseases | 6 | 42 | 176 | 875 |
| 446 | Neuropsychology | 3 | 41 | 2270 | 2933 |
| 446 | Differential Equations | 3 | 41 | 943 | 895 |
| 446 | Cell migration | 1 | 41 | 230 | 259 |
| 446 | Hemodynamics | 2 | 41 | 764 | 1127 |
| 446 | Nonlinear functional analysis | 6 | 41 | 725 | 1177 |
| 446 | Cross-Cultural Studies | 4 | 41 | 604 | 1009 |
| 446 | cell movement | 1 | 41 | 452 | 487 |
| 453 | Political Science | 6 | 40 | 1179 | 1475 |
| 453 | Advertising | 1 | 40 | 520 | 519 |
| 453 | fuel cells | 1 | 40 | 1873 | 1796 |
| 456 | Geriatric Pharmacology | 1 | 39 | 574 | 541 |
| 456 | Medical Oncology | 1 | 39 | 2925 | 2785 |
| 456 | Control Theory | 7 | 39 | 1184 | 1917 |
| 456 | Organizational learning | 6 | 39 | 158 | 531 |
| 456 | Metastasis | 1 | 39 | 394 | 591 |
| 456 | Knowledge management | 6 | 39 | 139 | 481 |
| 456 | Elderly | 2 | 39 | 1533 | 1095 |
| 456 | Chemical processes | 1 | 39 | 1158 | 829 |
| 456 | older people | 2 | 39 | 2011 | 1738 |
| 456 | Appetite | 4 | 39 | 527 | 1110 |
| 466 | Rheumatology | 1 | 38 | 1835 | 1687 |
| 466 | Reproductive health | 3 | 38 | 854 | 1275 |
| 466 | Pathogens | 3 | 38 | 89 | 223 |
| 469 | Critical Care | 2 | 37 | 1838 | 2592 |
| 469 | Critical Care Medicine | 2 | 37 | 1794 | 2561 |
| 469 | Fluid Dynamics | 3 | 37 | 1114 | 1457 |
| 469 | sports administration | 1 | 37 | 557 | 429 |
| 469 | Radio | 2 | 37 | 1891 | 2123 |
| 474 | Catalysis | 8 | 36 | 2361 | 4093 |
| 474 | Computational Linguistics | 5 | 36 | 369 | 561 |
| 474 | Bioorganic chemistry | 1 | 36 | 3886 | 3641 |
| 474 | Evolutionary Computation | 2 | 36 | 594 | 888 |
| 474 | East Asia | 5 | 36 | 449 | 721 |
| 479 | international trade | 4 | 35 | 616 | 922 |
| 479 | carcinogens | 2 | 35 | 1286 | 1764 |
| 479 | allied health | 1 | 35 | 533 | 456 |
| 482 | Thrombosis | 2 | 34 | 1325 | 1684 |
| 482 | Memory disorders | 1 | 34 | 475 | 433 |
| 482 | vascular diseases | 2 | 34 | 892 | 1265 |
| 482 | Respiration | 1 | 34 | 2342 | 2320 |
| 482 | Memory | 1 | 34 | 2880 | 2788 |
| 487 | Food Microbiology | 2 | 33 | 1529 | 2250 |
| 487 | Transplantation | 3 | 33 | 1131 | 1745 |
| 487 | drug evaluation | 4 | 33 | 1290 | 2222 |
| 490 | Software Engineering | 1 | 32 | 1628 | 1347 |
| 490 | Database Management | 1 | 32 | 1231 | 1093 |
| 490 | Career development | 3 | 32 | 398 | 585 |
| 490 | Organizational change | 1 | 32 | 1245 | 1039 |
| 490 | Change management | 1 | 32 | 233 | 155 |
| 495 | Medical Laboratory Science | 1 | 31 | 3639 | 3772 |
| 495 | Comparative Literature | 2 | 31 | 180 | 15 |
| 495 | Semiconductors | 2 | 31 | 2575 | 2656 |
| 495 | Qualitative Research | 3 | 31 | 487 | 722 |
| 499 | Information Systems | 1 | 30 | 2483 | 2189 |
| 499 | Experimental Psychology | 1 | 30 | 860 | 787 |
| 499 | War | 5 | 30 | 125 | 327 |
| 499 | Contraception | 1 | 30 | 1116 | 1119 |
| 499 | Biological Systems | 2 | 30 | 739 | 1065 |
| 499 | Aging | 3 | 30 | 2795 | 3795 |
| 499 | Cognition | 2 | 30 | 1937 | 2316 |
| 499 | Birth control | 1 | 30 | 929 | 956 |
| 507 | School Psychology | 1 | 29 | 742 | 756 |
| 507 | Virology | 4 | 29 | 2719 | 4798 |
| 507 | Mental Health Services | 4 | 29 | 1124 | 1954 |
| 507 | amino acids | 2 | 29 | 774 | 1147 |
| 507 | Nonlinear systems | 5 | 29 | 447 | 858 |
| 512 | Neuropsychiatry | 1 | 28 | 1349 | 1419 |
| 512 | Educational Research | 1 | 28 | 190 | 163 |
| 512 | Labor Economics | 2 | 28 | 628 | 720 |
| 512 | Socioeconomic Factors | 4 | 28 | 646 | 1550 |
| 512 | organizational effectiveness | 1 | 28 | 789 | 709 |
| 512 | corporate culture | 1 | 28 | 369 | 417 |
| 512 | viruses | 2 | 28 | 1755 | 2604 |
| 512 | Intellectual disability | 2 | 28 | 992 | 1222 |
| 512 | Cancer | 2 | 28 | 4088 | 5522 |
| 521 | Immunology | 3 | 27 | 3507 | 5163 |
| 521 | Philosophy | 1 | 27 | 2038 | 1115 |
| 521 | Autobiography | 5 | 27 | 39 | 20 |
| 521 | Electrophoresis | 1 | 27 | 2555 | 2612 |
| 521 | Functional foods | 1 | 27 | 738 | 807 |
| 521 | Brain | 3 | 27 | 2627 | 3891 |
| 521 | Phytotherapy | 1 | 27 | 1259 | 1327 |
| 528 | Regional Planning | 3 | 26 | 1431 | 2091 |
| 528 | Religion | 4 | 26 | 740 | 751 |
| 528 | Research methodology | 2 | 26 | 123 | 267 |
| 528 | individual differences | 1 | 26 | 485 | 595 |
| 528 | anesthesia | 2 | 26 | 766 | 770 |
| 533 | Probability | 2 | 25 | 721 | 989 |
| 533 | Risk Management | 2 | 25 | 956 | 1317 |
| 533 | X-ray spectroscopy | 1 | 25 | 431 | 324 |
| 533 | Computational Fluid Dynamics | 2 | 25 | 815 | 1053 |
| 533 | Ceramic materials | 2 | 25 | 1662 | 2008 |
| 533 | Metacognition | 1 | 25 | 145 | 183 |
| 533 | Risk | 2 | 25 | 700 | 1034 |
| 533 | Stem cells | 1 | 25 | 2345 | 2588 |
| 541 | Oceanography | 3 | 24 | 1705 | 2507 |
| 541 | Developmental Psychology | 1 | 24 | 1581 | 1602 |
| 541 | peptides | 2 | 24 | 1072 | 1381 |
| 541 | Youth | 6 | 24 | 444 | 1151 |
| 541 | Human biology | 2 | 24 | 808 | 1028 |
| 541 | miniaturization | 3 | 24 | 1900 | 3098 |
| 541 | proteins | 2 | 24 | 2521 | 3229 |
| 548 | Political Economy | 2 | 23 | 199 | 183 |
| 548 | Soil dynamics | 1 | 23 | 847 | 913 |
| 548 | Enzyme inhibitors | 1 | 23 | 759 | 869 |
| 548 | Public Finance | 1 | 23 | 346 | 239 |
| 548 | Cell communication | 1 | 23 | 1082 | 1351 |
| 548 | venom | 1 | 23 | 1338 | 1406 |
| 548 | Toxins | 1 | 23 | 1478 | 1542 |
| 555 | Endocrinology | 3 | 22 | 2950 | 4762 |
| 555 | Evolutionary Genetics | 3 | 22 | 704 | 1457 |
| 555 | Molecular Epidemiology | 3 | 22 | 704 | 1457 |
| 555 | International Law | 1 | 22 | 660 | 263 |
| 555 | cross-cultural comparison | 2 | 22 | 758 | 1051 |
| 555 | rare diseases | 1 | 22 | 1172 | 1320 |
| 555 | Agriculture | 5 | 22 | 1711 | 3427 |
| 562 | Early Childhood Education | 2 | 21 | 673 | 862 |
| 562 | Vocational Education | 1 | 21 | 878 | 849 |
| 562 | General Surgery | 2 | 21 | 812 | 945 |
| 562 | Psychopharmacology | 2 | 21 | 1841 | 2614 |
| 562 | Health Education | 3 | 21 | 1937 | 3196 |
| 562 | Cognitive Therapy | 2 | 21 | 744 | 1080 |
| 562 | Religion and Psychology | 2 | 21 | 709 | 887 |
| 562 | visualization | 3 | 21 | 1762 | 1740 |
| 562 | Vocational guidance | 1 | 21 | 1423 | 1482 |
| 562 | counseling | 1 | 21 | 2160 | 2154 |
| 562 | educational planning | 2 | 21 | 507 | 779 |
| 573 | Religion and Politics | 2 | 20 | 52 | 53 |
| 573 | epilepsy | 1 | 20 | 1586 | 1735 |
| 573 | insurgency | 1 | 20 | 156 | 96 |
| 573 | Ideology | 2 | 20 | 94 | 112 |
| 573 | Bacteriology | 1 | 20 | 2792 | 3372 |
| 573 | health and race | 1 | 20 | 396 | 492 |
| 573 | Quantum Optics | 1 | 20 | 1353 | 1302 |
| 573 | Randomized Controlled Trials | 1 | 20 | 2052 | 2055 |
| 573 | ethnic groups | 1 | 20 | 605 | 705 |
| 573 | innovation | 2 | 20 | 736 | 1267 |
| 573 | Atomic spectroscopy | 1 | 20 | 1765 | 1734 |
| 573 | Laser Spectroscopy | 1 | 20 | 1299 | 1246 |
| 585 | Robotics | 2 | 19 | 2090 | 2687 |
| 585 | Functional Analysis | 4 | 19 | 1070 | 1527 |
| 585 | Intercultural Communication | 2 | 19 | 497 | 765 |
| 585 | Biosensors | 1 | 19 | 2085 | 2750 |
| 585 | Energy Storage | 1 | 19 | 1938 | 2085 |
| 585 | Music | 2 | 19 | 1076 | 1187 |
| 585 | voice | 2 | 19 | 603 | 827 |
| 585 | Mass Media | 6 | 19 | 497 | 866 |
| 585 | Child welfare | 2 | 19 | 1391 | 1902 |
| 585 | urban health | 1 | 19 | 514 | 696 |
| 585 | preimplantation genetic diagnosis | 1 | 19 | 845 | 999 |
| 585 | embryo transfer | 1 | 19 | 869 | 1020 |
| 585 | big data | 2 | 19 | 841 | 1229 |
| 585 | Environmental risk assessment | 2 | 19 | 587 | 911 |
| 585 | Bioelectronics | 1 | 19 | 1838 | 2478 |
| 600 | Obstetrics | 5 | 18 | 1984 | 3900 |
| 600 | Higher Education | 2 | 18 | 732 | 1000 |
| 600 | Pediatric Hematology | 3 | 18 | 417 | 581 |
| 600 | Customer service | 2 | 18 | 74 | 153 |
| 600 | ovary | 1 | 18 | 477 | 614 |
| 600 | natural gas | 2 | 18 | 543 | 911 |
| 606 | health services accessibility | 4 | 17 | 857 | 1943 |
| 606 | Bioremediation | 2 | 17 | 1111 | 1878 |
| 606 | warfare | 3 | 17 | 272 | 673 |
| 606 | foreign exchange | 1 | 17 | 614 | 754 |
| 606 | Organometallic compounds | 1 | 17 | 1811 | 1969 |
| 606 | economic conditions | 3 | 17 | 499 | 895 |
| 606 | Africa | 5 | 17 | 1176 | 2176 |
| 606 | Reproduction | 4 | 17 | 2072 | 3777 |
| 606 | tests | 1 | 17 | 370 | 494 |
| 606 | Investments | 2 | 17 | 775 | 1112 |
| 616 | Data Mining | 2 | 16 | 2295 | 3421 |
| 616 | Logistics | 1 | 16 | 953 | 1177 |
| 616 | Nuclear Physics | 5 | 16 | 3157 | 4550 |
| 616 | Inventory Control | 1 | 16 | 168 | 308 |
| 616 | Pharmaceutical Technology | 2 | 16 | 1916 | 2842 |
| 616 | Forensic Toxicology | 1 | 16 | 127 | 164 |
| 616 | Immunochemistry | 1 | 16 | 1745 | 1991 |
| 616 | environmental remediation | 1 | 16 | 781 | 949 |
| 616 | Drug delivery systems | 2 | 16 | 2043 | 3081 |
| 616 | Watershed management | 1 | 16 | 515 | 531 |
| 616 | Hospitality industry | 1 | 16 | 745 | 971 |
| 616 | Cell surface receptors | 1 | 16 | 307 | 393 |
| 616 | Informatics | 2 | 16 | 1107 | 1711 |
| 629 | Molecular Genetics | 1 | 15 | 2769 | 3491 |
| 629 | poverty | 1 | 15 | 846 | 1100 |
| 629 | foreign policy | 2 | 15 | 343 | 298 |
| 629 | healthcare disparities | 1 | 15 | 953 | 1235 |
| 629 | Electrochemistry | 1 | 15 | 4861 | 4823 |
| 629 | Electrochemical Analysis | 1 | 15 | 2233 | 2499 |
| 629 | Adhesion | 2 | 15 | 926 | 1375 |
| 629 | cooperation | 1 | 15 | 260 | 222 |
| 629 | gene therapy | 1 | 15 | 1839 | 2428 |
| 629 | Industrial Policy | 1 | 15 | 832 | 976 |
| 629 | Turbulence | 1 | 15 | 424 | 476 |
| 629 | Hemophilia | 2 | 15 | 567 | 832 |
| 629 | Hypertension in pregnancy | 1 | 15 | 391 | 434 |
| 629 | Arab-Israeli Conflict | 2 | 15 | 88 | 121 |
| 629 | Diplomatic relations | 2 | 15 | 769 | 715 |
| 629 | Genetic therapy | 1 | 15 | 1891 | 2528 |
| 629 | adhesives | 2 | 15 | 993 | 1405 |
| 646 | Special Education | 1 | 14 | 1257 | 1212 |
| 646 | Adult Education | 2 | 14 | 758 | 1007 |
| 646 | Multicultural Education | 1 | 14 | 664 | 663 |
| 646 | Continuing Education | 2 | 14 | 577 | 769 |
| 646 | Simulation Methods | 3 | 14 | 976 | 1852 |
| 646 | Genetic testing | 3 | 14 | 347 | 819 |
| 646 | Access to Information | 1 | 14 | 421 | 655 |
| 646 | Child psychology | 1 | 14 | 2242 | 2639 |
| 646 | Planets | 1 | 14 | 2122 | 2733 |
| 646 | cultural pluralism | 1 | 14 | 697 | 779 |
| 646 | alcoholism | 1 | 14 | 2260 | 2741 |
| 646 | drug abuse | 1 | 14 | 1158 | 1385 |
| 646 | Information dissemination | 1 | 14 | 421 | 655 |
| 646 | Kidney diseases | 3 | 14 | 1048 | 1955 |
| 660 | Orthopedics | 3 | 13 | 1671 | 2815 |
| 660 | Nanochemistry | 1 | 13 | 2017 | 2382 |
| 660 | Gender Studies | 2 | 13 | 638 | 1043 |
| 660 | Queer Studies | 2 | 13 | 363 | 729 |
| 660 | Orthopedic Surgery | 2 | 13 | 1046 | 1656 |
| 660 | Nanostructured Materials | 1 | 13 | 3805 | 4442 |
| 660 | micromechanics | 1 | 13 | 1044 | 1270 |
| 660 | Autoimmunity | 1 | 13 | 1220 | 1723 |
| 660 | Respiratory Infections | 2 | 13 | 505 | 918 |
| 660 | Group decision making | 1 | 13 | 789 | 919 |
| 660 | Family Therapy | 2 | 13 | 869 | 1315 |
| 660 | child mental health | 2 | 13 | 554 | 946 |
| 660 | Social support | 1 | 13 | 351 | 532 |
| 660 | Foodborne diseases | 1 | 13 | 499 | 694 |
| 660 | homosexuality | 2 | 13 | 504 | 905 |
| 660 | Social environment | 1 | 13 | 363 | 547 |
| 660 | civil war | 2 | 13 | 49 | 127 |
| 660 | data protection | 2 | 13 | 790 | 1166 |
| 660 | Vaccines | 1 | 13 | 3085 | 3798 |
| 660 | Influenza | 2 | 13 | 368 | 763 |
| 680 | Anthropology | 2 | 12 | 1733 | 2242 |
| 680 | Pharmacy | 2 | 12 | 2660 | 4120 |
| 680 | Architecture | 1 | 12 | 892 | 805 |
| 680 | Neurobiology | 1 | 12 | 2543 | 3329 |
| 680 | Thermodynamics | 4 | 12 | 1106 | 1889 |
| 680 | Analytical Biochemistry | 1 | 12 | 2836 | 3415 |
| 680 | Surface-Active Agents | 1 | 12 | 1855 | 2503 |
| 680 | Biomarkers | 2 | 12 | 623 | 1231 |
| 680 | Heritage Tourism | 1 | 12 | 275 | 424 |
| 680 | cultural tourism | 1 | 12 | 275 | 424 |
| 680 | Surface properties | 1 | 12 | 1939 | 2604 |
| 680 | Plant diseases | 1 | 12 | 2726 | 3073 |
| 680 | biochemical markers | 2 | 12 | 903 | 1728 |
| 680 | Bereavement | 2 | 12 | 242 | 434 |
| 694 | Natural Sciences | 1 | 11 | 261 | 317 |
| 694 | Medical Technology | 2 | 11 | 2284 | 3786 |
| 694 | International Relations | 1 | 11 | 1638 | 1479 |
| 694 | Research Design | 1 | 11 | 2133 | 2833 |
| 694 | Calculus of Variations | 3 | 11 | 464 | 720 |
| 694 | Marriage | 1 | 11 | 900 | 1163 |
| 694 | Gerontology | 2 | 11 | 2416 | 3272 |
| 694 | Porous materials | 2 | 11 | 953 | 1518 |
| 694 | paraphilias | 1 | 11 | 331 | 507 |
| 694 | toxicity testing | 1 | 11 | 1397 | 1945 |
| 694 | Microstructure | 1 | 11 | 1485 | 1597 |
| 694 | Parasites | 1 | 11 | 2417 | 2957 |
| 694 | technical education | 2 | 11 | 812 | 1328 |
| 694 | Microscopy | 1 | 11 | 2326 | 2579 |
| 694 | Culture | 3 | 11 | 1051 | 1712 |
| 694 | Marriage counseling | 1 | 11 | 562 | 757 |
| 694 | Cell metabolism | 1 | 11 | 1208 | 1761 |
| 694 | Menopause | 1 | 11 | 609 | 809 |
| 712 | Respiratory Therapy | 1 | 10 | 80 | 123 |
| 712 | Otolaryngology | 1 | 10 | 965 | 1135 |
| 712 | Urban Planning | 1 | 10 | 672 | 986 |
| 712 | Proteomics | 1 | 10 | 1869 | 2542 |
| 712 | health behavior | 2 | 10 | 1237 | 2344 |
| 712 | community development | 1 | 10 | 1014 | 1267 |
| 712 | Maternal health services | 1 | 10 | 749 | 1095 |
| 712 | Medical Anthropology | 2 | 10 | 1553 | 2950 |
| 712 | adolescence | 3 | 10 | 902 | 1926 |
| 712 | Adolescent Psychology | 3 | 10 | 828 | 1754 |
| 712 | Housing | 1 | 10 | 846 | 1169 |
| 712 | Broadcasting | 1 | 10 | 364 | 486 |
| 712 | Luminescence | 1 | 10 | 2006 | 2357 |
| 712 | bioluminescence | 1 | 10 | 740 | 878 |
| 712 | gases | 1 | 10 | 80 | 123 |
| 712 | Roads | 1 | 10 | 1210 | 1328 |
| 712 | food service | 2 | 10 | 118 | 216 |
| 712 | insurance | 1 | 10 | 669 | 803 |
| 712 | thinking | 1 | 10 | 604 | 781 |
| 712 | Population | 1 | 10 | 1528 | 2071 |
| 712 | Creativity | 1 | 10 | 628 | 866 |
| 733 | Psychosomatic Medicine | 2 | 9 | 986 | 1920 |
| 733 | behavioral medicine | 1 | 9 | 2225 | 3265 |
| 733 | preventive medicine | 2 | 9 | 1528 | 2900 |
| 733 | Machining | 1 | 9 | 307 | 396 |
| 733 | hazard mitigation | 1 | 9 | 1690 | 2249 |
| 733 | research and development | 1 | 9 | 744 | 1035 |
| 733 | Personality Assessment | 1 | 9 | 842 | 1220 |
| 733 | Safety management | 2 | 9 | 827 | 1571 |
| 733 | Social work | 1 | 9 | 2446 | 2722 |
| 733 | Structure-activity relationship | 1 | 9 | 522 | 757 |
| 733 | Fibers | 4 | 9 | 69 | 220 |
| 733 | natural disasters | 1 | 9 | 2119 | 2789 |
| 733 | language | 1 | 9 | 1332 | 1576 |
| 746 | Anatomy | 1 | 8 | 2834 | 3550 |
| 746 | Neurogenetics | 1 | 8 | 619 | 884 |
| 746 | Green Chemistry | 2 | 8 | 2058 | 3306 |
| 746 | Marine Geology | 1 | 8 | 1015 | 1326 |
| 746 | Criminal psychology | 1 | 8 | 1124 | 1382 |
| 746 | Petroleum Geology | 1 | 8 | 856 | 1154 |
| 746 | Microelectronics | 1 | 8 | 2657 | 3227 |
| 746 | Geochemistry | 1 | 8 | 2840 | 3638 |
| 746 | Forensic Psychiatry | 1 | 8 | 887 | 1144 |
| 746 | Geopolitics | 1 | 8 | 499 | 657 |
| 746 | Biomechanics | 1 | 8 | 2205 | 2809 |
| 746 | Crisis management | 2 | 8 | 207 | 502 |
| 746 | Technological Innovations | 2 | 8 | 1389 | 2495 |
| 746 | Retinal diseases | 1 | 8 | 175 | 131 |
| 746 | Ultrasonics | 2 | 8 | 1557 | 2740 |
| 746 | Communication in marketing | 1 | 8 | 329 | 547 |
| 746 | Family | 1 | 8 | 1585 | 2088 |
| 746 | X-rays | 1 | 8 | 1153 | 1385 |
| 746 | families | 1 | 8 | 1415 | 1735 |
| 746 | Biometrics | 1 | 8 | 1662 | 2024 |
| 746 | World Wide Web | 6 | 8 | 216 | 975 |
| 746 | India | 1 | 8 | 2577 | 2530 |
| 768 | Power Electronics | 1 | 7 | 1591 | 2047 |
| 768 | Organizational Sociology | 1 | 7 | 591 | 809 |
| 768 | Pharmacogenetics | 3 | 7 | 1082 | 2508 |
| 768 | Regional Economics | 1 | 7 | 800 | 1097 |
| 768 | Municipal Engineering | 2 | 7 | 453 | 1135 |
| 768 | Cognitive Radio Networks | 1 | 7 | 402 | 575 |
| 768 | Islamic Architecture | 1 | 7 | 213 | 325 |
| 768 | Real Estate Investment | 1 | 7 | 309 | 428 |
| 768 | Happiness | 1 | 7 | 829 | 1279 |
| 768 | Chromosome mapping | 1 | 7 | 2983 | 4092 |
| 768 | Portfolio Management | 1 | 7 | 595 | 647 |
| 768 | gene mapping | 1 | 7 | 3222 | 4420 |
| 768 | real estate | 1 | 7 | 125 | 191 |
| 781 | Industrial Design | 1 | 6 | 513 | 827 |
| 781 | Materials Engineering | 1 | 6 | 1376 | 1801 |
| 781 | Cultural Studies | 1 | 6 | 335 | 542 |
| 781 | Nephrology | 1 | 6 | 947 | 1420 |
| 781 | Mechatronics | 1 | 6 | 1543 | 2083 |
| 781 | Paleoecology | 1 | 6 | 1498 | 1998 |
| 781 | Land Use Planning | 1 | 6 | 650 | 1016 |
| 781 | Plant Ecology | 1 | 6 | 2518 | 3409 |
| 781 | Food Preservation | 1 | 6 | 1314 | 1765 |
| 781 | Pharmacogenomics | 1 | 6 | 637 | 1068 |
| 781 | Remote Sensing | 2 | 6 | 1929 | 2778 |
| 781 | Neurovirology | 1 | 6 | 466 | 815 |
| 781 | Number Theory | 2 | 6 | 887 | 1235 |
| 781 | Critical Discourse Analysis | 1 | 6 | 100 | 217 |
| 781 | Preoperative Care | 2 | 6 | 116 | 329 |
| 781 | perioperative care | 2 | 6 | 115 | 326 |
| 781 | Well-being | 1 | 6 | 312 | 522 |
| 781 | Mutagenesis | 1 | 6 | 922 | 1434 |
| 781 | Human Capital | 1 | 6 | 457 | 753 |
| 781 | Art | 2 | 6 | 454 | 413 |
| 781 | social justice | 1 | 6 | 644 | 771 |
| 781 | Religion and Culture | 1 | 6 | 563 | 729 |
| 781 | Ferroelectricity | 1 | 6 | 1689 | 1911 |
| 781 | teratogenic agents | 1 | 6 | 481 | 829 |
| 781 | Sound | 1 | 6 | 1912 | 2223 |
| 781 | Humanitarian Assistance | 1 | 6 | 61 | 115 |
| 781 | design | 2 | 6 | 321 | 526 |
| 781 | Paleobotany | 1 | 6 | 318 | 507 |
| 781 | Vegetation dynamics | 1 | 6 | 288 | 475 |
| 781 | Yeast | 1 | 6 | 742 | 1125 |
| 781 | economic development projects | 1 | 6 | 401 | 700 |
| 781 | biological monitoring | 1 | 6 | 1028 | 1628 |
| 781 | Ultrasound | 1 | 6 | 1277 | 1838 |
| 781 | Stress | 1 | 6 | 570 | 967 |
| 781 | Radio frequency | 1 | 6 | 831 | 1241 |
| 781 | silicon | 1 | 6 | 737 | 1027 |
| 781 | Chronic diseases | 1 | 6 | 1132 | 1736 |
| 818 | Environmental Toxicology | 1 | 5 | 3706 | 5061 |
| 818 | Neurosurgery | 2 | 5 | 1236 | 2328 |
| 818 | Sports Medicine | 2 | 5 | 2876 | 4229 |
| 818 | Feminist criticism | 1 | 5 | 248 | 376 |
| 818 | Smoking | 2 | 5 | 944 | 1933 |
| 818 | Health insurance | 2 | 5 | 581 | 1386 |
| 818 | environmental control | 1 | 5 | 471 | 822 |
| 818 | income | 1 | 5 | 330 | 535 |
| 818 | Input-output analysis | 1 | 5 | 467 | 710 |
| 818 | Monomers | 1 | 5 | 163 | 335 |
| 818 | Wealth | 1 | 5 | 330 | 535 |
| 818 | behavior therapy | 1 | 5 | 1262 | 1811 |
| 830 | Cartography | 2 | 4 | 614 | 1124 |
| 830 | Comparative Education | 1 | 4 | 445 | 738 |
| 830 | Mobile genetic elements | 1 | 4 | 215 | 451 |
| 830 | Energy Consumption | 1 | 4 | 764 | 1328 |
| 830 | Water Conservation | 1 | 4 | 186 | 377 |
| 830 | Globalization | 1 | 4 | 1101 | 1743 |
| 830 | Professional ethics | 1 | 4 | 555 | 1054 |
| 830 | Futures | 1 | 4 | 597 | 889 |
| 830 | Biomass | 1 | 4 | 1289 | 2063 |
| 830 | Combinatorial analysis | 1 | 4 | 1354 | 1518 |
| 830 | crops | 1 | 4 | 300 | 488 |
| 830 | family violence | 1 | 4 | 725 | 1260 |
| 830 | food industry | 1 | 4 | 1441 | 2018 |
| 830 | DNA | 1 | 4 | 1167 | 1794 |
| 830 | Fluorescence | 2 | 4 | 609 | 1335 |
| 830 | Educational evaluation | 1 | 4 | 322 | 505 |
| 830 | Immunity | 1 | 4 | 2908 | 4156 |
| 830 | Aquatic ecology | 1 | 4 | 1538 | 2170 |
| 848 | Pediatric Dermatology | 1 | 3 | 731 | 1060 |
| 848 | Geometry | 1 | 3 | 1504 | 1672 |
| 848 | Seismology | 1 | 3 | 839 | 1200 |
| 848 | Development Economics | 1 | 3 | 784 | 1262 |
| 848 | Astrophysics | 1 | 3 | 3831 | 4679 |
| 848 | Palliative Care | 1 | 3 | 1555 | 2319 |
| 848 | Physical Chemistry | 1 | 3 | 3061 | 4058 |
| 848 | Telemedicine | 1 | 3 | 787 | 1460 |
| 848 | Human Rights | 1 | 3 | 1014 | 1497 |
| 848 | economic forecasting | 1 | 3 | 633 | 974 |
| 848 | Geographic information systems | 1 | 3 | 1919 | 2818 |
| 848 | Sustainable agriculture | 1 | 3 | 1346 | 2107 |
| 848 | hospice care | 1 | 3 | 1031 | 1734 |
| 848 | civil rights | 1 | 3 | 704 | 1087 |
| 848 | Climate change | 1 | 3 | 1654 | 2555 |
| 848 | Political Participation | 1 | 3 | 566 | 852 |
| 848 | Citizenship | 1 | 3 | 293 | 533 |
| 848 | Physical fitness | 1 | 3 | 1553 | 2219 |
| 848 | Earthquakes | 1 | 3 | 661 | 996 |
| 848 | Communist countries | 1 | 3 | 436 | 661 |
| 848 | Enzyme | 2 | 3 | 671 | 1584 |
| 848 | Iron | 1 | 3 | 593 | 921 |
| 848 | Methodology | 1 | 3 | 922 | 1384 |
| 848 | Petroleum | 1 | 3 | 594 | 873 |
| 848 | North Africa | 1 | 3 | 352 | 468 |
| 848 | Archives | 1 | 3 | 179 | 201 |
| 848 | Refractory materials | 1 | 3 | 316 | 414 |
| 848 | Development | 1 | 3 | 1362 | 2127 |
| 848 | Securities industry | 1 | 3 | 61 | 146 |
| 848 | Economic Assistance | 1 | 3 | 1214 | 1926 |
| 848 | financial instruments | 1 | 3 | 49 | 127 |
| 848 | enzymes | 2 | 3 | 1888 | 3568 |
| 848 | Choreography | 1 | 3 | 33 | 27 |
| 881 | Visual Communication | 1 | 2 | 883 | 1337 |
| 881 | Total Quality Management | 1 | 2 | 1074 | 1751 |
| 881 | Sleep Disorders | 1 | 2 | 2427 | 3290 |
| 881 | soil management | 1 | 2 | 960 | 1500 |
| 881 | Bioethics | 1 | 2 | 1561 | 2263 |
| 881 | Sonochemistry | 1 | 2 | 1093 | 1813 |
| 881 | Data Warehousing | 1 | 2 | 54 | 180 |
| 881 | breastfeeding | 1 | 2 | 959 | 1585 |
| 881 | Therapeutics | 1 | 2 | 2947 | 4454 |
| 881 | pharmaceutical industry | 1 | 2 | 1125 | 1908 |
| 881 | rehabilitation | 1 | 2 | 3605 | 5327 |
| 881 | Brain damage | 1 | 2 | 772 | 1357 |
| 881 | Sleep | 1 | 2 | 2483 | 3353 |
| 894 | Nuclear Medicine | 1 | 1 | 1621 | 2339 |
| 894 | Telecommunications | 2 | 1 | 1083 | 2194 |
| 894 | Educational Technology | 1 | 1 | 2550 | 3966 |
| 894 | Brain-Computer Interfaces | 1 | 1 | 104 | 255 |
| 894 | Pesticide residues | 1 | 1 | 165 | 479 |
| 894 | Medical Ethics | 1 | 1 | 1951 | 3046 |
| 894 | Food additives | 1 | 1 | 1977 | 3012 |
| 894 | Romanticism | 1 | 1 | 308 | 335 |
| 894 | food contamination | 1 | 1 | 1888 | 2861 |
| 894 | Substance Abuse | 1 | 1 | 2250 | 3501 |
| 894 | Critical theory | 1 | 1 | 333 | 543 |
| 894 | Human Security | 1 | 1 | 36 | 121 |
| 894 | Urban Anthropology | 1 | 1 | 347 | 674 |
| 894 | Semiotics | 1 | 1 | 624 | 847 |
| 894 | nucleic acids | 2 | 1 | 2085 | 3776 |
| 894 | civilization | 1 | 1 | 1452 | 1657 |
| 894 | Hospitals | 1 | 1 | 751 | 1292 |
| 894 | nucleotides | 2 | 1 | 444 | 1000 |
| 894 | Prisons | 1 | 1 | 542 | 912 |
| 894 | Endocrine system | 1 | 1 | 1270 | 1262 |
| 894 | Pregnancy | 1 | 1 | 1575 | 2573 |
| 915 | Civil Engineering | 1 | 0 | 2497 | 3482 |
| 915 | Chronobiology | 1 | 0 | 937 | 1648 |
| 915 | Religion and Literature | 1 | 0 | 63 | 88 |
| 915 | Criminal Law | 1 | 0 | 441 | 753 |
| 915 | Clinical Pharmacology | 1 | 0 | 2374 | 3692 |
| 915 | Information Retrieval | 1 | 0 | 905 | 1531 |
| 915 | Metallurgy | 1 | 0 | 3538 | 4798 |
| 915 | Radiation Protection | 1 | 0 | 1219 | 1883 |
| 915 | Developmental Biology | 1 | 0 | 2985 | 4400 |
| 915 | Circadian rhythms | 1 | 0 | 714 | 1350 |
| 915 | biological clocks | 1 | 0 | 937 | 1648 |
| 915 | Photogrammetry | 1 | 0 | 1529 | 2289 |
| 915 | Neurotransmitters | 1 | 0 | 957 | 1230 |
| 915 | Moral Education | 1 | 0 | 269 | 571 |
| 915 | Social Media | 1 | 0 | 210 | 453 |
| 915 | Molecular Spectroscopy | 1 | 0 | 2622 | 3782 |
| 915 | Molecules | 2 | 0 | 1763 | 3021 |
| 915 | regional security | 1 | 0 | 126 | 306 |
| 915 | France | 2 | 0 | 444 | 966 |
| 915 | press | 1 | 0 | 213 | 417 |
| 915 | circadian rhythm | 1 | 0 | 937 | 1648 |
| 915 | biological rhythms | 1 | 0 | 899 | 1598 |
| 915 | Cell death | 1 | 0 | 1875 | 2780 |
| 915 | crime victims | 1 | 0 | 317 | 677 |
| 915 | disaster relief | 1 | 0 | 472 | 1016 |
| 915 | Aggression | 1 | 0 | 785 | 1474 |
| 915 | Chemical reactors | 1 | 0 | 351 | 722 |
| 915 | women | 1 | 0 | 1412 | 2355 |
| 915 | regional cooperation | 1 | 0 | 125 | 303 |