| 1 | Medicine | 181 | 4.5K | 1768 | 2478 |
| 2 | Neurology | 103 | 4.3K | 1314 | 1402 |
| 3 | Psychophysiology | 51 | 3.2K | 840 | 635 |
| 4 | Neurophysiology | 62 | 3.1K | 773 | 809 |
| 5 | Psychiatry | 19 | 2.9K | 2375 | 1127 |
| 6 | Research | 93 | 2.1K | 2187 | 2723 |
| 7 | Environment | 37 | 2.0K | 1698 | 1915 |
| 8 | Climatology | 42 | 2.0K | 468 | 438 |
| 9 | Meteorology | 35 | 2.0K | 736 | 686 |
| 10 | Brain | 42 | 1.9K | 916 | 819 |
| 11 | Science | 87 | 1.8K | 2868 | 4935 |
| 12 | Psychopharmacology | 18 | 1.8K | 848 | 500 |
| 13 | Biochemistry | 55 | 1.7K | 3382 | 3433 |
| 14 | Pollution | 26 | 1.6K | 2444 | 2069 |
| 15 | Geophysics | 31 | 1.5K | 1547 | 1248 |
| 16 | Neuropsychology | 31 | 1.5K | 800 | 612 |
| 17 | Public Health | 78 | 1.5K | 1216 | 1803 |
| 18 | Ecology | 62 | 1.4K | 1737 | 2705 |
| 19 | Psychology | 8 | 1.3K | 4098 | 1485 |
| 20 | Physiology | 35 | 1.3K | 1666 | 1626 |
| 21 | Atmospheric Physics | 26 | 1.2K | 642 | 602 |
| 22 | Clinical Psychology | 2 | 1.2K | 2188 | 560 |
| 23 | Behavior | 27 | 1.1K | 1231 | 1318 |
| 24 | human behavior | 25 | 1.1K | 877 | 1031 |
| 25 | Biology | 57 | 1.1K | 3444 | 5732 |
| 26 | Atmospheric Chemistry | 20 | 1.1K | 457 | 481 |
| 27 | Biodiversity conservation | 11 | 1.1K | 1042 | 968 |
| 28 | Climate change | 10 | 1.0K | 664 | 861 |
| 28 | Eutrophication | 10 | 1.0K | 653 | 858 |
| 30 | Microbiology | 22 | 980 | 3585 | 3448 |
| 31 | Electrochemistry | 38 | 932 | 1470 | 1372 |
| 32 | Radiation | 6 | 930 | 2006 | 500 |
| 33 | bioclimatology | 5 | 928 | 795 | 136 |
| 34 | Biomedical Engineering | 38 | 926 | 1620 | 1858 |
| 35 | Toxicology | 42 | 923 | 1582 | 2036 |
| 36 | Pharmacology | 34 | 822 | 2235 | 2653 |
| 37 | Neurochemistry | 23 | 805 | 1103 | 1180 |
| 38 | Botany | 31 | 786 | 1640 | 1932 |
| 39 | Animal Behavior | 19 | 756 | 847 | 929 |
| 40 | Ethology | 17 | 753 | 694 | 796 |
| 41 | energy conservation | 9 | 744 | 1195 | 773 |
| 42 | Neurobiology | 15 | 737 | 1065 | 1103 |
| 43 | Nervous system | 20 | 701 | 1167 | 1417 |
| 44 | Energy Policy | 10 | 696 | 1630 | 1322 |
| 45 | Building Materials | 3 | 688 | 1861 | 772 |
| 46 | Immunology | 23 | 665 | 1970 | 2416 |
| 47 | Molecular Biology | 33 | 639 | 3735 | 5214 |
| 48 | Depression | 3 | 605 | 411 | 197 |
| 48 | Anxiety Disorders | 3 | 605 | 634 | 310 |
| 48 | Anxiety | 3 | 605 | 631 | 309 |
| 51 | Environmental Health | 21 | 568 | 2669 | 3216 |
| 52 | Vaccines | 13 | 525 | 1072 | 938 |
| 53 | Chemistry | 28 | 509 | 4934 | 6453 |
| 54 | environmental pollution | 16 | 507 | 2481 | 2794 |
| 55 | Liver diseases | 4 | 497 | 1700 | 1203 |
| 56 | Electronics | 17 | 482 | 1930 | 1413 |
| 57 | Renewable Energy Sources | 12 | 475 | 1433 | 1956 |
| 58 | Bioenergetics | 7 | 472 | 600 | 414 |
| 59 | Solar Energy | 6 | 433 | 1411 | 895 |
| 60 | Biophysics | 19 | 398 | 3432 | 3845 |
| 61 | Epidemiology | 27 | 395 | 1590 | 2462 |
| 62 | Water pollution | 6 | 391 | 2355 | 1867 |
| 63 | Engineering | 14 | 388 | 2558 | 1844 |
| 64 | Pediatric Neurology | 6 | 380 | 955 | 1106 |
| 65 | Hydrology | 13 | 371 | 1452 | 1383 |
| 66 | energy resources | 4 | 339 | 1339 | 1190 |
| 67 | Plants | 14 | 334 | 1137 | 1515 |
| 68 | Water | 5 | 315 | 2341 | 2066 |
| 69 | Earth Sciences | 24 | 308 | 1393 | 2058 |
| 70 | Hydrogeology | 2 | 306 | 1063 | 274 |
| 71 | Ecosystem management | 6 | 305 | 518 | 411 |
| 72 | Environmental Policy | 9 | 301 | 2243 | 2669 |
| 73 | Geothermal Energy | 1 | 299 | 549 | 97 |
| 74 | Wildlife conservation | 10 | 292 | 727 | 1004 |
| 75 | Condensed Matter | 6 | 289 | 3030 | 2195 |
| 76 | Cytology | 8 | 286 | 3691 | 4029 |
| 77 | Genomics | 6 | 281 | 3143 | 2717 |
| 78 | Health Policy | 11 | 279 | 1488 | 1598 |
| 79 | Biological Systems | 10 | 269 | 279 | 315 |
| 80 | Solid State Physics | 4 | 268 | 3874 | 2456 |
| 81 | Electrical Engineering | 18 | 266 | 1769 | 1351 |
| 81 | Computer Science | 5 | 266 | 2044 | 862 |
| 83 | Plant physiology | 5 | 262 | 1950 | 1790 |
| 84 | Geology | 18 | 261 | 1616 | 2003 |
| 85 | Pathology | 6 | 260 | 2251 | 2103 |
| 86 | Astrophysics | 9 | 252 | 2511 | 2447 |
| 87 | Public Health Administration | 10 | 251 | 214 | 147 |
| 88 | Biomass Energy | 4 | 248 | 2565 | 2132 |
| 88 | Autoimmunity | 6 | 248 | 646 | 718 |
| 90 | Astronomy | 12 | 246 | 1962 | 2342 |
| 91 | Medical Physics | 9 | 243 | 1261 | 1216 |
| 92 | rehabilitation | 1 | 242 | 4377 | 1619 |
| 93 | Primary health care | 3 | 241 | 2340 | 1116 |
| 93 | Neuromuscular diseases | 4 | 241 | 744 | 534 |
| 93 | Muscles | 4 | 241 | 994 | 811 |
| 96 | Allergy | 5 | 240 | 1308 | 1501 |
| 97 | Mathematics | 14 | 238 | 3882 | 3184 |
| 98 | Heat Exchangers | 7 | 228 | 821 | 926 |
| 98 | Chromosome mapping | 5 | 228 | 1847 | 1765 |
| 98 | gene mapping | 5 | 228 | 2067 | 2064 |
| 101 | Environmental Toxicology | 6 | 225 | 2123 | 2263 |
| 101 | Reproduction | 5 | 225 | 2379 | 1849 |
| 103 | Medical genetics | 8 | 220 | 2427 | 3122 |
| 104 | environmental protection | 5 | 217 | 3466 | 3017 |
| 105 | Remote Sensing | 14 | 215 | 650 | 690 |
| 106 | atmospheric models | 4 | 208 | 715 | 684 |
| 107 | Memory | 5 | 206 | 1988 | 1762 |
| 108 | Economics | 14 | 203 | 2549 | 2638 |
| 109 | Bacteriology | 7 | 201 | 1629 | 2089 |
| 110 | Plant Ecology | 11 | 200 | 1087 | 1672 |
| 111 | Environmental monitoring | 6 | 198 | 3482 | 3765 |
| 112 | arthritis | 6 | 195 | 1187 | 1488 |
| 113 | Biotechnology | 9 | 193 | 4889 | 5931 |
| 113 | Marine Biology | 14 | 193 | 1506 | 2163 |
| 115 | Urology | 2 | 191 | 2816 | 1774 |
| 116 | Food | 7 | 189 | 2600 | 2782 |
| 117 | Spectrum analysis | 13 | 187 | 2912 | 3641 |
| 118 | Chemical Engineering | 7 | 183 | 3773 | 4004 |
| 119 | Psychoneuroimmunology | 3 | 182 | 838 | 776 |
| 119 | Neuroimmunology | 3 | 182 | 922 | 840 |
| 119 | economic policy | 8 | 182 | 1851 | 1338 |
| 122 | Clinical Immunology | 5 | 178 | 1350 | 1246 |
| 123 | Archaeology | 12 | 177 | 763 | 867 |
| 124 | Geography | 15 | 176 | 1186 | 1800 |
| 124 | Tropical Medicine | 21 | 176 | 682 | 1387 |
| 126 | Computational Fluid Dynamics | 5 | 174 | 546 | 411 |
| 126 | Europe | 9 | 174 | 2392 | 2387 |
| 128 | Environmental Engineering | 7 | 173 | 3236 | 3695 |
| 128 | Learning | 5 | 173 | 1239 | 1134 |
| 130 | Health Services Research | 3 | 172 | 2302 | 1404 |
| 130 | Alzheimer's disease | 15 | 172 | 860 | 1104 |
| 132 | Developmental Neurobiology | 10 | 170 | 234 | 378 |
| 132 | Developing countries | 6 | 170 | 2044 | 1869 |
| 134 | Economic Development | 2 | 169 | 2534 | 1607 |
| 135 | natural disasters | 9 | 164 | 725 | 1113 |
| 136 | Obstetrics | 8 | 163 | 2202 | 2354 |
| 137 | Pediatrics | 6 | 161 | 2499 | 2950 |
| 137 | sanitation | 1 | 161 | 2894 | 2134 |
| 139 | Neurosurgery | 6 | 160 | 1055 | 1172 |
| 140 | Industrial Microbiology | 2 | 158 | 2844 | 2106 |
| 140 | Microbial Biotechnology | 2 | 158 | 1499 | 785 |
| 140 | wood | 1 | 158 | 916 | 275 |
| 143 | Child | 4 | 157 | 2891 | 2200 |
| 144 | Product life cycle | 2 | 154 | 478 | 300 |
| 144 | green products | 2 | 154 | 431 | 295 |
| 146 | Transportation | 4 | 152 | 1678 | 1370 |
| 147 | Medical Microbiology | 6 | 151 | 2201 | 2895 |
| 148 | Food Microbiology | 3 | 150 | 1547 | 1488 |
| 148 | Solid State Chemistry | 3 | 150 | 2854 | 1953 |
| 150 | Respiration | 3 | 149 | 1946 | 1664 |
| 151 | Physics | 14 | 147 | 6613 | 10482 |
| 152 | Geriatrics | 4 | 144 | 3481 | 2774 |
| 152 | ecosystem | 4 | 144 | 1424 | 1589 |
| 154 | Optics | 10 | 142 | 3541 | 3408 |
| 155 | Biogeography | 3 | 141 | 1176 | 1322 |
| 155 | civilization | 8 | 141 | 942 | 193 |
| 157 | Materials Science | 4 | 140 | 5018 | 4356 |
| 157 | Paleoclimatology | 6 | 140 | 908 | 1133 |
| 157 | Molecular Genetics | 6 | 140 | 1846 | 2375 |
| 160 | Latin America | 54 | 136 | 253 | 557 |
| 161 | Dementia | 14 | 135 | 876 | 1132 |
| 162 | Composite Materials | 3 | 133 | 3101 | 2798 |
| 162 | Ceramic materials | 3 | 133 | 1557 | 1128 |
| 164 | Entropy | 2 | 131 | 1617 | 630 |
| 165 | Immunity | 4 | 130 | 2218 | 2933 |
| 166 | food technology | 3 | 128 | 3033 | 2686 |
| 166 | Superconductors | 6 | 128 | 554 | 475 |
| 168 | Literature | 6 | 127 | 721 | 55 |
| 169 | Dermatology | 2 | 126 | 2732 | 1797 |
| 169 | Environmental Management | 6 | 126 | 2499 | 3483 |
| 171 | Pediatric Dermatology | 1 | 125 | 1008 | 326 |
| 171 | Marine Pollution | 3 | 125 | 1430 | 1423 |
| 171 | Adolescent | 1 | 125 | 4460 | 2046 |
| 174 | Planets | 3 | 123 | 1831 | 1927 |
| 175 | Immunopathology | 3 | 120 | 1814 | 1701 |
| 175 | Virology | 2 | 120 | 4544 | 4321 |
| 177 | Endocrinology | 7 | 118 | 2838 | 3861 |
| 177 | emergency management | 6 | 118 | 615 | 806 |
| 177 | Timber | 1 | 118 | 103 | 16 |
| 177 | Forest products | 1 | 118 | 123 | 15 |
| 181 | Molecular evolution | 4 | 117 | 1889 | 2091 |
| 182 | Biochemical Engineering | 1 | 116 | 5598 | 4502 |
| 182 | Geochemistry | 2 | 116 | 2719 | 2192 |
| 182 | Materials | 3 | 116 | 6691 | 5771 |
| 185 | Neurotoxicology | 2 | 115 | 901 | 705 |
| 185 | Apoptosis | 2 | 115 | 415 | 286 |
| 185 | neurotoxins | 2 | 115 | 415 | 286 |
| 185 | Neurotoxic agents | 2 | 115 | 415 | 286 |
| 185 | Nerve regeneration | 2 | 115 | 415 | 286 |
| 190 | biological evolution | 4 | 114 | 2273 | 2774 |
| 191 | Developmental Biology | 2 | 113 | 3041 | 2772 |
| 192 | Freezing | 1 | 112 | 755 | 229 |
| 193 | Data Mining | 3 | 111 | 2091 | 1947 |
| 193 | data collection | 3 | 111 | 1399 | 1429 |
| 195 | sedimentary basins | 2 | 110 | 290 | 238 |
| 195 | Phylogeny | 2 | 110 | 1316 | 1210 |
| 197 | Precision medicine | 1 | 109 | 560 | 173 |
| 197 | cell physiology | 1 | 109 | 2856 | 2236 |
| 199 | Emergency Medicine | 9 | 108 | 1186 | 1595 |
| 199 | Natural history | 13 | 108 | 2629 | 6916 |
| 201 | Medical Anthropology | 2 | 107 | 1970 | 1859 |
| 202 | Environmental pollutants | 4 | 105 | 2445 | 2757 |
| 203 | radioactive waste | 4 | 104 | 723 | 1330 |
| 203 | industrial waste | 5 | 104 | 648 | 1335 |
| 203 | Hazardous waste | 4 | 104 | 882 | 1403 |
| 206 | Mycology | 6 | 101 | 1458 | 1868 |
| 206 | Plant diseases | 10 | 101 | 1286 | 1923 |
| 208 | Geodesy | 1 | 100 | 1560 | 731 |
| 208 | Insects | 5 | 100 | 1416 | 1381 |
| 210 | solar cells | 3 | 99 | 1079 | 1263 |
| 211 | Metabolism | 5 | 98 | 2942 | 3984 |
| 212 | Agricultural Ecology | 3 | 97 | 1376 | 1637 |
| 212 | plant molecular biology | 2 | 97 | 2086 | 2221 |
| 212 | Cognition | 1 | 97 | 3064 | 1948 |
| 215 | Biocompatible Materials | 2 | 95 | 4975 | 4889 |
| 216 | United Kingdom | 1 | 93 | 3402 | 2208 |
| 216 | Radiation effects | 3 | 93 | 751 | 862 |
| 218 | United States | 8 | 92 | 4416 | 5685 |
| 219 | Raman spectroscopy | 5 | 91 | 708 | 914 |
| 219 | Sedimentary rocks | 1 | 91 | 1065 | 723 |
| 219 | biochemical markers | 5 | 91 | 735 | 893 |
| 222 | Cell Biology | 3 | 90 | 5044 | 5579 |
| 222 | solar power | 2 | 90 | 1171 | 1190 |
| 224 | pollutants | 3 | 89 | 2327 | 2603 |
| 224 | movement | 2 | 89 | 471 | 411 |
| 226 | Earthquake Engineering | 5 | 87 | 1098 | 1419 |
| 226 | Synaptic Transmission | 3 | 87 | 626 | 713 |
| 226 | Bioinorganic chemistry | 2 | 87 | 2002 | 1606 |
| 226 | Solar System | 2 | 87 | 1125 | 992 |
| 230 | Nutrition | 4 | 86 | 4975 | 5548 |
| 230 | Diagnosis | 4 | 86 | 636 | 643 |
| 230 | Developmental Immunology | 4 | 86 | 839 | 1092 |
| 233 | Engineering Geology | 2 | 85 | 1925 | 1632 |
| 233 | Attention | 3 | 85 | 2458 | 2460 |
| 235 | global environmental change | 5 | 84 | 770 | 1365 |
| 235 | coal | 1 | 84 | 2789 | 2204 |
| 237 | Emergency Medical Services | 7 | 83 | 576 | 898 |
| 237 | Cytogenetics | 3 | 83 | 2043 | 2569 |
| 237 | Clinical Chemistry | 5 | 83 | 3095 | 4009 |
| 237 | Superconductivity | 3 | 83 | 577 | 467 |
| 237 | Technology | 2 | 83 | 6389 | 4646 |
| 237 | disease susceptibility | 3 | 83 | 436 | 427 |
| 237 | symptoms | 3 | 83 | 436 | 427 |
| 244 | Agronomy | 4 | 82 | 500 | 835 |
| 245 | Human biology | 3 | 81 | 775 | 682 |
| 246 | Serbia | 62 | 79 | 7 | 31 |
| 246 | Sites | 4 | 79 | 557 | 868 |
| 248 | Adhesion | 1 | 78 | 1402 | 675 |
| 248 | Molecular Spectroscopy | 7 | 78 | 1373 | 2070 |
| 248 | adhesives | 1 | 78 | 1485 | 680 |
| 251 | Diabetes mellitus | 1 | 77 | 4124 | 3398 |
| 251 | Geobiology | 1 | 77 | 940 | 646 |
| 251 | Agriculture | 3 | 77 | 2903 | 2809 |
| 251 | Diabetes | 1 | 77 | 4209 | 3464 |
| 255 | Metabolic diseases | 2 | 76 | 3645 | 3783 |
| 255 | Ocean Engineering | 4 | 76 | 1630 | 1956 |
| 257 | Embryology | 6 | 75 | 1456 | 2429 |
| 257 | Forensic Genetics | 3 | 75 | 287 | 355 |
| 257 | Inflammation | 4 | 75 | 1398 | 2058 |
| 257 | educational planning | 2 | 75 | 594 | 496 |
| 261 | Microbial Ecology | 2 | 73 | 3325 | 3857 |
| 261 | Sports Medicine | 7 | 73 | 2178 | 2717 |
| 261 | Bioremediation | 2 | 73 | 1272 | 1194 |
| 261 | environmental issues | 4 | 73 | 391 | 668 |
| 265 | Genetics | 5 | 72 | 4223 | 5896 |
| 265 | Forest Ecology | 6 | 72 | 871 | 1503 |
| 265 | Forest Management | 6 | 72 | 818 | 1442 |
| 268 | Sociology | 4 | 71 | 3306 | 3604 |
| 268 | atmosphere | 4 | 71 | 817 | 1138 |
| 270 | Public Policy | 6 | 70 | 1496 | 2494 |
| 271 | Geomorphology | 6 | 69 | 1146 | 1917 |
| 271 | medical education | 5 | 69 | 1880 | 2362 |
| 271 | Biodiversity | 6 | 69 | 2007 | 3052 |
| 274 | Adolescent Medicine | 1 | 68 | 1431 | 1348 |
| 274 | mammals | 4 | 68 | 1131 | 1317 |
| 276 | Analytical Chemistry | 3 | 67 | 5290 | 5557 |
| 276 | Autoimmune diseases | 3 | 67 | 819 | 1163 |
| 278 | Operations Research | 3 | 65 | 2532 | 2472 |
| 278 | Photochemistry | 4 | 65 | 1916 | 2407 |
| 280 | Statistics | 3 | 64 | 3261 | 2814 |
| 280 | Sleep Disorders | 2 | 64 | 2604 | 2232 |
| 280 | Land use | 3 | 64 | 1347 | 1680 |
| 280 | Bacterial infections | 3 | 64 | 1164 | 1756 |
| 280 | Sleep | 2 | 64 | 2616 | 2243 |
| 285 | Bioengineering | 3 | 63 | 5374 | 6425 |
| 285 | France | 1 | 63 | 924 | 300 |
| 285 | Diplomatic relations | 1 | 63 | 1468 | 409 |
| 285 | Fungi | 3 | 63 | 1257 | 1546 |
| 289 | Hydrometeorology | 1 | 62 | 455 | 455 |
| 289 | disease outbreaks | 1 | 62 | 1248 | 1047 |
| 289 | Epidemics | 1 | 62 | 1171 | 1031 |
| 292 | Nanotechnology | 2 | 61 | 6523 | 6491 |
| 292 | Proteomics | 3 | 61 | 1480 | 2039 |
| 294 | Rheumatology | 2 | 60 | 1936 | 1993 |
| 294 | Critical Care Medicine | 4 | 60 | 1762 | 2908 |
| 294 | Mental Disorders | 7 | 60 | 2722 | 4594 |
| 294 | soil management | 1 | 60 | 1109 | 995 |
| 294 | Ethnology | 6 | 60 | 1248 | 1496 |
| 294 | tillage | 1 | 60 | 855 | 853 |
| 300 | Oncology | 2 | 59 | 3460 | 4117 |
| 300 | Biodegradation | 1 | 59 | 1561 | 1271 |
| 300 | Light | 3 | 59 | 1241 | 1803 |
| 300 | Perception | 2 | 59 | 3111 | 2980 |
| 304 | Human genetics | 3 | 58 | 2847 | 4607 |
| 304 | Autoantibodies | 2 | 58 | 943 | 1169 |
| 304 | miniaturization | 2 | 58 | 2662 | 2993 |
| 304 | Aging | 2 | 58 | 4390 | 3988 |
| 308 | Paleontology | 10 | 57 | 884 | 1535 |
| 308 | Microelectronics | 1 | 57 | 3117 | 2559 |
| 308 | Decision making | 2 | 57 | 2335 | 2077 |
| 311 | Anthropology | 4 | 56 | 1753 | 1790 |
| 311 | Critical Care | 2 | 56 | 2577 | 3101 |
| 311 | Parasitology | 6 | 56 | 2209 | 3220 |
| 311 | Fisheries | 3 | 56 | 2033 | 2163 |
| 315 | Physical Geography | 2 | 53 | 840 | 722 |
| 315 | Energy Conversion | 3 | 53 | 1384 | 2004 |
| 315 | Energy Storage | 3 | 53 | 1486 | 1736 |
| 315 | Human Geography | 2 | 53 | 1558 | 1315 |
| 315 | Geodynamics | 1 | 53 | 1451 | 1231 |
| 320 | soil conservation | 4 | 52 | 752 | 1258 |
| 320 | Sports | 3 | 52 | 2489 | 2390 |
| 322 | Structural Engineering | 1 | 51 | 2821 | 1991 |
| 322 | Paleoecology | 4 | 51 | 1049 | 1537 |
| 322 | Paleogeography | 4 | 51 | 934 | 1428 |
| 322 | cell adhesion molecules | 2 | 51 | 840 | 1094 |
| 322 | cytokines | 2 | 51 | 2067 | 2374 |
| 322 | cell interaction | 2 | 51 | 1813 | 2151 |
| 322 | Cell communication | 2 | 51 | 1257 | 1562 |
| 329 | Coastal zone management | 2 | 50 | 1015 | 1091 |
| 329 | water supply | 1 | 50 | 1817 | 1584 |
| 329 | Pregnancy | 4 | 50 | 892 | 1405 |
| 332 | Oceanography | 6 | 49 | 1622 | 2545 |
| 332 | Herbal medicine | 2 | 49 | 1056 | 1488 |
| 332 | mycoses | 1 | 49 | 1814 | 1800 |
| 332 | Host-parasite interactions | 2 | 49 | 1942 | 2752 |
| 332 | Entomology | 5 | 49 | 2334 | 2787 |
| 337 | Social Sciences | 17 | 48 | 1767 | 4033 |
| 337 | Atomic spectroscopy | 2 | 48 | 1642 | 1558 |
| 339 | Quality Control | 2 | 47 | 2711 | 2809 |
| 339 | air quality | 2 | 47 | 389 | 421 |
| 339 | Marine resources | 2 | 47 | 1037 | 1161 |
| 339 | Spain | 22 | 47 | 188 | 396 |
| 343 | hazard mitigation | 3 | 46 | 1065 | 1538 |
| 343 | Transport | 2 | 46 | 944 | 1165 |
| 343 | animals | 9 | 46 | 814 | 1685 |
| 343 | Sea | 2 | 46 | 852 | 994 |
| 343 | Fishery resources | 2 | 46 | 956 | 1090 |
| 348 | Humanities | 3 | 45 | 2288 | 1735 |
| 348 | Environmental Chemistry | 2 | 45 | 3187 | 3695 |
| 348 | Photogrammetry | 10 | 45 | 422 | 570 |
| 348 | food handling | 1 | 45 | 1806 | 1772 |
| 352 | infection | 7 | 44 | 1426 | 3093 |
| 352 | Primates | 3 | 44 | 931 | 1136 |
| 354 | Visual Perception | 1 | 43 | 3728 | 3097 |
| 355 | Infection control | 2 | 42 | 1141 | 1400 |
| 355 | biobanks | 1 | 42 | 393 | 213 |
| 355 | Energy Harvesting | 1 | 42 | 808 | 1022 |
| 355 | Respiratory Infections | 2 | 42 | 591 | 712 |
| 355 | Hospitals | 2 | 42 | 1169 | 1276 |
| 355 | Influenza | 2 | 42 | 469 | 604 |
| 361 | Pharmacogenetics | 2 | 41 | 1733 | 2235 |
| 361 | Antarctica | 1 | 41 | 1107 | 746 |
| 363 | Soil Science | 4 | 40 | 1930 | 2900 |
| 363 | Ethnobotany | 1 | 40 | 506 | 516 |
| 363 | Pharmacogenomics | 1 | 40 | 803 | 809 |
| 363 | Cytoskeleton | 1 | 40 | 589 | 614 |
| 363 | Environmental Geochemistry | 3 | 40 | 604 | 994 |
| 363 | Traditional medicine | 1 | 40 | 697 | 617 |
| 363 | ethnobiology | 1 | 40 | 566 | 568 |
| 363 | Phytotherapy | 1 | 40 | 1812 | 1686 |
| 363 | Minerals | 3 | 40 | 888 | 1342 |
| 363 | Ethnomedicine | 1 | 40 | 402 | 505 |
| 373 | Conservation Biology | 3 | 39 | 1420 | 2116 |
| 373 | plant communities | 3 | 39 | 1285 | 2037 |
| 373 | Nitric oxide | 1 | 39 | 822 | 719 |
| 376 | Hematology | 2 | 38 | 4663 | 4539 |
| 376 | Economic History | 12 | 38 | 2259 | 4089 |
| 378 | Green Chemistry | 3 | 37 | 1935 | 3101 |
| 378 | Engineering Mathematics | 3 | 37 | 3057 | 2988 |
| 378 | Sustainable Engineering | 3 | 37 | 1892 | 2859 |
| 378 | Hydraulic Engineering | 4 | 37 | 968 | 1466 |
| 378 | Forensic Psychiatry | 3 | 37 | 685 | 848 |
| 378 | Population | 3 | 37 | 1284 | 1739 |
| 384 | Ethnoarchaeology | 1 | 36 | 382 | 353 |
| 384 | histological techniques | 1 | 36 | 1468 | 1629 |
| 384 | Molecular structure | 3 | 36 | 3047 | 3753 |
| 384 | health planning | 5 | 36 | 2075 | 3459 |
| 388 | Education | 22 | 35 | 1664 | 4776 |
| 388 | Substance Abuse | 2 | 35 | 2173 | 2538 |
| 388 | older people | 2 | 35 | 2595 | 2289 |
| 388 | Cancer | 2 | 35 | 5303 | 6381 |
| 392 | Zoology | 2 | 34 | 3705 | 3634 |
| 392 | Clinical Biochemistry | 1 | 34 | 2765 | 2368 |
| 392 | Water quality management | 2 | 34 | 2698 | 2984 |
| 392 | Elderly | 1 | 34 | 2615 | 1478 |
| 396 | Structural dynamics | 3 | 33 | 1199 | 1926 |
| 396 | Paleobiology | 5 | 33 | 286 | 472 |
| 396 | soil microbiology | 2 | 33 | 2106 | 3272 |
| 396 | Evolution | 7 | 33 | 1540 | 3591 |
| 400 | Fluid Mechanics | 6 | 32 | 1483 | 2527 |
| 400 | Regional Planning | 3 | 32 | 1829 | 2363 |
| 400 | Sedimentology | 2 | 32 | 911 | 1216 |
| 400 | Research Design | 1 | 32 | 2751 | 2518 |
| 400 | Neuroplasticity | 10 | 32 | 100 | 892 |
| 400 | neuronal plasticity | 10 | 32 | 75 | 792 |
| 406 | Nursing | 6 | 31 | 1643 | 2921 |
| 406 | Pharmacognosy | 1 | 31 | 3365 | 3584 |
| 406 | Medicinal plants | 1 | 31 | 2807 | 2924 |
| 406 | System analysis | 3 | 31 | 2980 | 3819 |
| 406 | Reservoirs | 1 | 31 | 457 | 330 |
| 406 | North America | 1 | 31 | 1985 | 1600 |
| 412 | Oxidative stress | 1 | 30 | 2308 | 2728 |
| 412 | Cellular senescence | 1 | 30 | 1571 | 1920 |
| 414 | Artificial Intelligence | 2 | 29 | 5146 | 5528 |
| 414 | Agricultural Chemistry | 1 | 29 | 4106 | 4036 |
| 414 | Systems Analysis | 2 | 29 | 1631 | 1904 |
| 414 | land degradation | 2 | 29 | 741 | 1163 |
| 414 | China | 2 | 29 | 4319 | 4879 |
| 414 | drug addiction | 1 | 29 | 2282 | 2424 |
| 414 | alcoholism | 1 | 29 | 2944 | 2974 |
| 414 | drug control | 1 | 29 | 824 | 857 |
| 414 | Multiple sclerosis | 2 | 29 | 989 | 1015 |
| 414 | degradation | 2 | 29 | 741 | 1163 |
| 424 | Photography | 5 | 28 | 1775 | 1263 |
| 424 | Bioethics | 1 | 28 | 1908 | 1510 |
| 424 | Medical Ethics | 1 | 28 | 2473 | 1937 |
| 424 | Fracture mechanics | 1 | 28 | 2439 | 2301 |
| 428 | concrete | 1 | 27 | 1767 | 1937 |
| 428 | Administration | 2 | 27 | 117 | 152 |
| 428 | livestock | 8 | 27 | 368 | 868 |
| 431 | Infrared spectroscopy | 2 | 26 | 514 | 833 |
| 431 | bats | 2 | 26 | 191 | 262 |
| 431 | Antigens | 2 | 26 | 1441 | 1919 |
| 431 | carbon monoxide | 1 | 26 | 737 | 969 |
| 435 | Infections | 4 | 25 | 1381 | 2957 |
| 435 | Electrophoresis | 1 | 25 | 3159 | 3307 |
| 435 | Immunochemistry | 1 | 25 | 2188 | 2121 |
| 435 | dietary supplements | 1 | 25 | 1659 | 1910 |
| 435 | Sexual health | 1 | 25 | 1644 | 1394 |
| 435 | Chromatography | 1 | 25 | 3141 | 3137 |
| 435 | Genetic variation | 1 | 25 | 311 | 338 |
| 435 | Landslides | 1 | 25 | 531 | 692 |
| 435 | Chromatographic analysis | 1 | 25 | 3573 | 3414 |
| 435 | Mental illness | 5 | 25 | 2097 | 4324 |
| 445 | Signal Processing | 3 | 24 | 2336 | 3227 |
| 445 | Nanostructured Materials | 3 | 24 | 3575 | 5180 |
| 445 | Travel | 7 | 24 | 597 | 1855 |
| 445 | Electrochemical Analysis | 2 | 24 | 2083 | 2663 |
| 449 | Population Genetics | 2 | 23 | 1778 | 2741 |
| 449 | Sustainable agriculture | 2 | 23 | 1125 | 1602 |
| 449 | Energy Consumption | 1 | 23 | 523 | 593 |
| 449 | soil pollution | 2 | 23 | 851 | 1263 |
| 449 | locomotion | 4 | 23 | 717 | 1467 |
| 449 | posture | 4 | 23 | 717 | 1467 |
| 449 | Molecular ecology | 2 | 23 | 1613 | 2728 |
| 449 | Screening | 1 | 23 | 521 | 542 |
| 449 | Biometrics | 2 | 23 | 1641 | 1984 |
| 449 | Invertebrates | 1 | 23 | 1327 | 1404 |
| 449 | gait | 4 | 23 | 717 | 1467 |
| 449 | walking | 4 | 23 | 717 | 1467 |
| 461 | Natural Sciences | 6 | 22 | 70 | 238 |
| 461 | Public Administration | 8 | 22 | 966 | 2150 |
| 461 | economic forecasting | 1 | 22 | 730 | 778 |
| 461 | Forecasting | 1 | 22 | 1138 | 1082 |
| 461 | Reproductive toxicology | 6 | 22 | 370 | 1264 |
| 461 | environmental exposure | 5 | 22 | 1834 | 4310 |
| 467 | Intelligent Transportation Systems | 2 | 21 | 1041 | 1459 |
| 467 | Marine Ecology | 2 | 21 | 1091 | 1538 |
| 467 | Medical Oncology | 1 | 21 | 3890 | 3981 |
| 467 | Demography | 1 | 21 | 1487 | 1546 |
| 467 | Metallurgy | 2 | 21 | 3501 | 3917 |
| 467 | Carcinogenesis | 1 | 21 | 2127 | 2608 |
| 467 | Edible plants | 1 | 21 | 573 | 761 |
| 467 | Flood control | 2 | 21 | 407 | 652 |
| 467 | carcinogens | 1 | 21 | 2110 | 2562 |
| 467 | mutagens | 1 | 21 | 1727 | 2199 |
| 467 | Metals | 2 | 21 | 3146 | 3702 |
| 478 | Pediatric Rheumatology | 1 | 20 | 580 | 593 |
| 478 | preimplantation genetic diagnosis | 1 | 20 | 1002 | 1173 |
| 478 | embryo transfer | 1 | 20 | 1033 | 1203 |
| 478 | Hormones | 2 | 20 | 2006 | 3045 |
| 478 | rare diseases | 1 | 20 | 1482 | 1672 |
| 478 | Immune system | 1 | 20 | 2145 | 2611 |
| 484 | Anatomy | 7 | 19 | 1681 | 3913 |
| 484 | Land Use Planning | 1 | 19 | 726 | 924 |
| 484 | Restoration Ecology | 1 | 19 | 980 | 1118 |
| 484 | Alternative Medicine | 1 | 19 | 3740 | 4104 |
| 484 | Evidence-Based Medicine | 1 | 19 | 2746 | 2810 |
| 484 | complementary therapies | 1 | 19 | 4104 | 4330 |
| 484 | probabilities | 1 | 19 | 2173 | 1691 |
| 484 | Information Science | 4 | 19 | 2626 | 4833 |
| 484 | Gastrointestinal diseases | 1 | 19 | 1619 | 1735 |
| 493 | Asthma | 1 | 18 | 1610 | 1757 |
| 493 | Risk Management | 1 | 18 | 1698 | 1871 |
| 493 | Greenhouse gases | 1 | 18 | 735 | 1049 |
| 493 | Bipolar Disorder | 1 | 18 | 774 | 984 |
| 493 | Flood forecasting | 1 | 18 | 278 | 421 |
| 498 | Neural circuitry | 2 | 17 | 2692 | 3946 |
| 498 | management | 3 | 17 | 3996 | 5993 |
| 498 | Cell death | 1 | 17 | 2231 | 2954 |
| 498 | biological invasions | 2 | 17 | 919 | 1526 |
| 502 | Immunotherapy | 3 | 16 | 2412 | 4371 |
| 502 | Chemical Ecology | 1 | 16 | 1032 | 1401 |
| 502 | Morphology | 5 | 16 | 743 | 1582 |
| 502 | Geomagnetism | 1 | 16 | 1223 | 1382 |
| 502 | environmental indicators | 2 | 16 | 1630 | 2860 |
| 502 | Microprocessors | 1 | 16 | 1149 | 1188 |
| 502 | Child Development | 3 | 16 | 2471 | 4217 |
| 502 | Cardiopulmonary Resuscitation | 4 | 16 | 133 | 301 |
| 502 | Parasitic Diseases | 3 | 16 | 2731 | 4567 |
| 502 | cardiac arrest | 4 | 16 | 133 | 301 |
| 502 | pheromones | 1 | 16 | 957 | 1331 |
| 502 | computer networks | 2 | 16 | 3321 | 4132 |
| 502 | drug toxicity | 1 | 16 | 1108 | 1522 |
| 515 | Forensic Psychology | 1 | 15 | 842 | 912 |
| 515 | Process Control | 1 | 15 | 1630 | 2223 |
| 515 | Immunogenetics | 1 | 15 | 1562 | 1892 |
| 515 | Medical innovations | 1 | 15 | 2251 | 3317 |
| 515 | Physical fitness | 1 | 15 | 1990 | 2261 |
| 515 | Telecommunication | 3 | 15 | 2740 | 3779 |
| 515 | biomimicry | 1 | 15 | 331 | 494 |
| 522 | Cell division | 1 | 14 | 1251 | 1691 |
| 522 | Geriatric Oncology | 1 | 14 | 1359 | 1799 |
| 522 | sustainability | 1 | 14 | 1747 | 2228 |
| 522 | Cell differentiation | 1 | 14 | 3181 | 4139 |
| 522 | Stem cells | 1 | 14 | 3034 | 3689 |
| 522 | violence | 2 | 14 | 1393 | 2269 |
| 522 | Aggression | 2 | 14 | 671 | 1312 |
| 529 | Robotics | 3 | 13 | 1927 | 3284 |
| 529 | Distance Education | 3 | 13 | 516 | 1195 |
| 529 | Urban Policy | 1 | 13 | 1536 | 2051 |
| 529 | Evolutionary Genetics | 1 | 13 | 1567 | 2102 |
| 529 | Molecular Epidemiology | 1 | 13 | 1567 | 2102 |
| 529 | Schizophrenia | 1 | 13 | 2003 | 2493 |
| 529 | Immunopharmacology | 3 | 13 | 1305 | 2737 |
| 529 | preventive medicine | 3 | 13 | 1775 | 3636 |
| 529 | Immunotoxicology | 3 | 13 | 350 | 988 |
| 529 | Parasites | 3 | 13 | 2011 | 3570 |
| 529 | urban forestry | 1 | 13 | 655 | 873 |
| 529 | Cement | 1 | 13 | 1130 | 1483 |
| 541 | Sustainable Development | 2 | 12 | 3143 | 4899 |
| 541 | Occupational Health | 1 | 12 | 2586 | 2639 |
| 541 | Organizational Sociology | 1 | 12 | 669 | 820 |
| 541 | Pharmaceutical Chemistry | 2 | 12 | 5482 | 7579 |
| 541 | Anti-inflammatory agents | 1 | 12 | 599 | 881 |
| 541 | occupational diseases | 1 | 12 | 2081 | 2833 |
| 541 | freshwater biology | 1 | 12 | 1835 | 2235 |
| 548 | Medical Laboratory Science | 1 | 11 | 4186 | 5233 |
| 548 | Database Management | 1 | 11 | 1472 | 1787 |
| 548 | Automation | 4 | 11 | 1884 | 3663 |
| 548 | Drug design | 2 | 11 | 2651 | 4174 |
| 548 | Art | 1 | 11 | 911 | 420 |
| 548 | Social policy | 2 | 11 | 1502 | 2233 |
| 548 | fuel cells | 2 | 11 | 1693 | 2696 |
| 548 | Antibodies | 1 | 11 | 1480 | 1910 |
| 556 | Nuclear Engineering | 1 | 10 | 2367 | 2365 |
| 556 | Nuclear Energy | 1 | 10 | 2250 | 2187 |
| 556 | Nuclear Physics | 1 | 10 | 5822 | 6077 |
| 556 | Physical organic chemistry | 2 | 10 | 1941 | 2990 |
| 556 | symbiosis | 1 | 10 | 394 | 596 |
| 556 | Biogeochemistry | 1 | 10 | 2042 | 2842 |
| 556 | Entrepreneurship | 1 | 10 | 1912 | 2429 |
| 556 | World Bank | 1 | 10 | 136 | 233 |
| 556 | nuclear power | 1 | 10 | 1052 | 944 |
| 556 | Japan | 1 | 10 | 4079 | 4344 |
| 556 | population geography | 1 | 10 | 823 | 1021 |
| 567 | Philosophy | 5 | 9 | 1558 | 1979 |
| 567 | Computer Graphics | 1 | 9 | 2997 | 3603 |
| 567 | Chronobiology | 1 | 9 | 941 | 1273 |
| 567 | Computer Vision | 1 | 9 | 2201 | 2895 |
| 567 | Developmental Psychology | 1 | 9 | 1957 | 2576 |
| 567 | Solar power plants | 1 | 9 | 462 | 797 |
| 567 | air quality management | 1 | 9 | 1240 | 1982 |
| 567 | Image Processing | 1 | 9 | 3646 | 4387 |
| 567 | Circadian rhythms | 1 | 9 | 684 | 1058 |
| 567 | biological clocks | 1 | 9 | 941 | 1273 |
| 567 | civil rights | 1 | 9 | 854 | 926 |
| 567 | Organometallic chemistry | 1 | 9 | 3301 | 3818 |
| 567 | Learning disabilities | 1 | 9 | 1565 | 2000 |
| 567 | Measurement | 2 | 9 | 1835 | 3215 |
| 567 | Social Change | 1 | 9 | 1907 | 2760 |
| 567 | Photovoltaic Cells | 1 | 9 | 464 | 798 |
| 567 | Sexuality | 1 | 9 | 691 | 884 |
| 567 | Developmental Disabilities | 1 | 9 | 1939 | 2721 |
| 567 | Paleopathology | 2 | 9 | 469 | 787 |
| 567 | Wind power | 1 | 9 | 683 | 887 |
| 567 | circadian rhythm | 1 | 9 | 941 | 1273 |
| 567 | government | 1 | 9 | 1476 | 1314 |
| 567 | biological rhythms | 1 | 9 | 898 | 1237 |
| 567 | Intellectual disability | 1 | 9 | 1773 | 2206 |
| 567 | civil service | 1 | 9 | 760 | 923 |
| 567 | sexual behavior | 1 | 9 | 1380 | 1911 |
| 593 | Industrial Engineering | 1 | 8 | 3503 | 4335 |
| 593 | Information Technology | 1 | 8 | 4887 | 5395 |
| 593 | Software Engineering | 1 | 8 | 1954 | 2195 |
| 593 | Orthopedics | 1 | 8 | 3048 | 3824 |
| 593 | Community Psychiatry | 1 | 8 | 2238 | 3055 |
| 593 | Educational Technology | 1 | 8 | 3053 | 3755 |
| 593 | Soil dynamics | 2 | 8 | 641 | 1241 |
| 593 | Biomarkers | 2 | 8 | 722 | 1617 |
| 593 | Hypertension in pregnancy | 2 | 8 | 473 | 726 |
| 593 | Teaching | 3 | 8 | 2113 | 3846 |
| 593 | Language Arts | 1 | 8 | 234 | 316 |
| 593 | Communication | 1 | 8 | 3934 | 4494 |
| 593 | Virulence | 2 | 8 | 1764 | 3356 |
| 593 | Psychiatric Epidemiology | 1 | 8 | 1120 | 1894 |
| 593 | Venezuela | 2 | 8 | 203 | 151 |
| 593 | venom | 2 | 8 | 1358 | 2298 |
| 593 | Toxins | 2 | 8 | 1494 | 2478 |
| 610 | Law | 13 | 7 | 795 | 2263 |
| 610 | Catalysis | 1 | 7 | 5104 | 6252 |
| 610 | Organic Chemistry | 2 | 7 | 4224 | 6066 |
| 610 | Environmental Geology | 2 | 7 | 2207 | 3770 |
| 610 | Pharmaceutical Technology | 1 | 7 | 2812 | 3808 |
| 610 | Fluid Dynamics | 1 | 7 | 2173 | 2763 |
| 610 | Analytical Biochemistry | 1 | 7 | 3430 | 4622 |
| 610 | Genetic testing | 1 | 7 | 891 | 1304 |
| 610 | Magnetic Resonance Spectroscopy | 2 | 7 | 1777 | 2775 |
| 610 | nuclear magnetic resonance spectroscopy | 2 | 7 | 1135 | 1798 |
| 610 | Groundwater | 1 | 7 | 1373 | 1890 |
| 610 | Transplantation | 1 | 7 | 2332 | 3004 |
| 610 | city planning | 2 | 7 | 2301 | 3770 |
| 610 | Growth | 2 | 7 | 1763 | 3130 |
| 610 | food industry | 1 | 7 | 1499 | 2097 |
| 610 | NMR | 2 | 7 | 829 | 1408 |
| 610 | magnetic resonance | 2 | 7 | 870 | 1459 |
| 627 | Political Science | 3 | 6 | 2209 | 3224 |
| 627 | Econometrics | 2 | 6 | 1860 | 2806 |
| 627 | Plant Taxonomy | 3 | 6 | 498 | 1084 |
| 627 | Numerical Analysis | 1 | 6 | 3905 | 4519 |
| 627 | Microeconomics | 1 | 6 | 684 | 846 |
| 627 | Lipid metabolism | 1 | 6 | 946 | 1537 |
| 627 | Qualitative Research | 1 | 6 | 1019 | 1452 |
| 627 | Photobiology | 1 | 6 | 2690 | 3697 |
| 627 | social conflict | 2 | 6 | 325 | 682 |
| 627 | Lipids | 1 | 6 | 2675 | 3794 |
| 627 | geological modeling | 2 | 6 | 775 | 1577 |
| 627 | Lipid | 1 | 6 | 951 | 1541 |
| 627 | Mountains | 1 | 6 | 942 | 1276 |
| 627 | mathematical concepts | 1 | 6 | 893 | 1221 |
| 627 | Plant cells | 1 | 6 | 1930 | 2891 |
| 642 | Radiology | 2 | 5 | 2585 | 4042 |
| 642 | Global Health | 1 | 5 | 2576 | 3682 |
| 642 | Cartography | 6 | 5 | 362 | 1274 |
| 642 | Plant Morphology | 1 | 5 | 1163 | 1702 |
| 642 | Veterinary Immunology | 1 | 5 | 783 | 1255 |
| 642 | Human-Computer Interaction | 1 | 5 | 2997 | 4174 |
| 642 | health services accessibility | 1 | 5 | 2114 | 3125 |
| 642 | epilepsy | 1 | 5 | 2011 | 2918 |
| 642 | Simulation Methods | 1 | 5 | 2078 | 2811 |
| 642 | Mass Spectrometry | 1 | 5 | 2369 | 3284 |
| 642 | Action Research | 1 | 5 | 519 | 928 |
| 642 | Freeze-Drying | 1 | 5 | 1135 | 1444 |
| 642 | Hypothermia | 1 | 5 | 1135 | 1444 |
| 642 | Freeze Drying | 1 | 5 | 1135 | 1444 |
| 642 | energy development | 1 | 5 | 1920 | 2902 |
| 642 | weather | 1 | 5 | 1252 | 2072 |
| 642 | Trace elements | 1 | 5 | 663 | 1251 |
| 642 | bees | 2 | 5 | 580 | 1185 |
| 642 | pigments | 1 | 5 | 1520 | 2271 |
| 642 | Aquatic ecology | 2 | 5 | 1413 | 2597 |
| 662 | Civil Engineering | 2 | 4 | 2573 | 3820 |
| 662 | Systems Engineering | 2 | 4 | 3124 | 4939 |
| 662 | Criminal psychology | 1 | 4 | 1403 | 1944 |
| 662 | Control Theory | 1 | 4 | 2861 | 3564 |
| 662 | Combinatorial chemistry | 1 | 4 | 1827 | 2811 |
| 662 | Ichthyology | 1 | 4 | 1030 | 1411 |
| 662 | Labor Mobility | 1 | 4 | 86 | 80 |
| 662 | Herpetology | 1 | 4 | 744 | 1053 |
| 662 | Nanostructures | 1 | 4 | 4023 | 5334 |
| 662 | Randomized Controlled Trials | 1 | 4 | 2584 | 3794 |
| 662 | Human trafficking | 1 | 4 | 187 | 300 |
| 662 | Adaptive control systems | 1 | 4 | 1145 | 1664 |
| 662 | nucleic acids | 1 | 4 | 3212 | 4442 |
| 662 | peptides | 1 | 4 | 1916 | 2791 |
| 662 | emigration | 1 | 4 | 71 | 74 |
| 662 | immigration | 1 | 4 | 451 | 762 |
| 662 | Criminal behavior | 1 | 4 | 431 | 701 |
| 662 | Internal migration | 1 | 4 | 71 | 74 |
| 662 | Amphibians | 1 | 4 | 712 | 867 |
| 662 | Structure-activity relationship | 1 | 4 | 1012 | 1511 |
| 662 | Australia | 3 | 4 | 2483 | 5563 |
| 683 | Underwater Archaeology | 1 | 3 | 287 | 397 |
| 683 | Chemotherapy | 2 | 3 | 2425 | 4388 |
| 683 | Psychiatric Nursing | 1 | 3 | 1416 | 2173 |
| 683 | Mathematical Physics | 1 | 3 | 4860 | 5493 |
| 683 | Patient Safety | 1 | 3 | 232 | 475 |
| 683 | Organ transplantation | 1 | 3 | 862 | 1277 |
| 683 | Business | 2 | 3 | 3073 | 5104 |
| 683 | X-rays | 1 | 3 | 1522 | 2094 |
| 683 | Documentation | 3 | 3 | 391 | 1083 |
| 683 | Migration | 1 | 3 | 463 | 810 |
| 683 | irrigation | 1 | 3 | 746 | 1196 |
| 683 | drainage | 1 | 3 | 632 | 997 |
| 683 | drug therapy | 2 | 3 | 3706 | 6357 |
| 683 | crime victims | 1 | 3 | 356 | 710 |
| 683 | child abuse | 1 | 3 | 1708 | 2693 |
| 683 | recreation | 1 | 3 | 1269 | 1839 |
| 683 | Leisure | 1 | 3 | 678 | 1130 |
| 700 | Health Services Administration | 1 | 2 | 2610 | 4133 |
| 700 | Coastal Engineering | 1 | 2 | 322 | 543 |
| 700 | Computational Biology | 1 | 2 | 5719 | 7831 |
| 700 | Adult Education | 1 | 2 | 1205 | 1855 |
| 700 | Radiography | 1 | 2 | 1398 | 2201 |
| 700 | Radiation Protection | 2 | 2 | 1149 | 2143 |
| 700 | radiation monitoring | 2 | 2 | 1046 | 2001 |
| 700 | Continuing Education | 1 | 2 | 902 | 1424 |
| 700 | Geochemical Modeling | 1 | 2 | 524 | 851 |
| 700 | Semiconductors | 1 | 2 | 3554 | 4707 |
| 700 | Bioacoustics | 2 | 2 | 136 | 524 |
| 700 | Enzyme inhibitors | 1 | 2 | 824 | 1515 |
| 700 | Biomechanics | 1 | 2 | 3021 | 4340 |
| 700 | Marine biodiversity | 2 | 2 | 405 | 909 |
| 700 | Health | 1 | 2 | 4857 | 7113 |
| 700 | Accreditation | 1 | 2 | 207 | 400 |
| 700 | Bioinformatics | 1 | 2 | 3992 | 5663 |
| 700 | Radioisotopes | 1 | 2 | 2501 | 3463 |
| 700 | clay | 1 | 2 | 1530 | 2406 |
| 700 | reasoning | 1 | 2 | 850 | 1302 |
| 700 | Personality Assessment | 1 | 2 | 1056 | 1691 |
| 700 | commerce | 1 | 2 | 2966 | 4076 |
| 700 | organization | 1 | 2 | 1423 | 2236 |
| 700 | Evolution equations | 1 | 2 | 359 | 571 |
| 700 | South America | 1 | 2 | 303 | 409 |
| 700 | Scotland | 1 | 2 | 301 | 531 |
| 700 | Radiation dosimetry | 2 | 2 | 806 | 1673 |
| 700 | planning | 1 | 2 | 1581 | 2666 |
| 700 | Fuzzy systems | 1 | 2 | 3098 | 4185 |
| 700 | Argentina | 7 | 2 | 125 | 455 |
| 700 | Economic planning | 1 | 2 | 1031 | 1755 |
| 731 | History | 3 | 1 | 1373 | 1872 |
| 731 | Pharmacy | 1 | 1 | 4217 | 6089 |
| 731 | Surface Chemistry | 3 | 1 | 4281 | 7932 |
| 731 | International Relations | 1 | 1 | 2258 | 2838 |
| 731 | Genetic engineering | 1 | 1 | 4189 | 6076 |
| 731 | Ceramics | 1 | 1 | 2726 | 3819 |
| 731 | Systems Biology | 1 | 1 | 3266 | 5152 |
| 731 | Organizational change | 1 | 1 | 1479 | 2507 |
| 731 | Reproductive health | 1 | 1 | 1723 | 2896 |
| 731 | Pest control | 5 | 1 | 111 | 721 |
| 731 | Technological Innovations | 1 | 1 | 2124 | 3507 |
| 731 | Nanoparticles | 1 | 1 | 3312 | 4934 |
| 731 | Ornithology | 1 | 1 | 1798 | 2521 |
| 731 | gene therapy | 1 | 1 | 2374 | 3682 |
| 731 | Wetland ecology | 1 | 1 | 1036 | 1800 |
| 731 | Plant breeding | 1 | 1 | 1716 | 2782 |
| 731 | Wetland conservation | 1 | 1 | 757 | 1406 |
| 731 | Transgenic plants | 1 | 1 | 1047 | 1820 |
| 731 | Pesticides | 5 | 1 | 565 | 2381 |
| 731 | economic conditions | 1 | 1 | 1263 | 1799 |
| 731 | Library Science | 3 | 1 | 1552 | 3533 |
| 731 | libraries | 3 | 1 | 929 | 1959 |
| 731 | coastal areas | 1 | 1 | 176 | 354 |
| 731 | coastal archaeology | 1 | 1 | 176 | 354 |
| 731 | Glass | 1 | 1 | 2063 | 3116 |
| 731 | Petroleum | 1 | 1 | 680 | 1115 |
| 731 | Genetic therapy | 1 | 1 | 2533 | 3803 |
| 731 | islands | 1 | 1 | 176 | 354 |
| 731 | pottery | 1 | 1 | 1987 | 2996 |
| 731 | Soviet Union | 1 | 1 | 1625 | 2318 |
| 731 | Microscopy | 1 | 1 | 3363 | 4730 |
| 731 | natural gas | 1 | 1 | 860 | 1406 |
| 731 | Birds | 1 | 1 | 2154 | 2915 |
| 731 | Educational evaluation | 1 | 1 | 404 | 744 |
| 731 | India | 1 | 1 | 3750 | 4896 |
| 731 | Wetlands | 1 | 1 | 772 | 1431 |
| 767 | Arts | 1 | 0 | 1129 | 1593 |
| 767 | Mechanical Engineering | 2 | 0 | 3511 | 6140 |
| 767 | Surgery | 1 | 0 | 3919 | 5412 |
| 767 | Linguistics | 1 | 0 | 2851 | 3946 |
| 767 | Architecture | 1 | 0 | 1358 | 1914 |
| 767 | Insurance Law | 1 | 0 | 71 | 36 |
| 767 | Mathematics Education | 1 | 0 | 892 | 1384 |
| 767 | Constitutional Law | 1 | 0 | 475 | 619 |
| 767 | Ergonomics | 1 | 0 | 2128 | 3264 |
| 767 | Public Relations | 1 | 0 | 993 | 1723 |
| 767 | Criminal Law | 1 | 0 | 563 | 932 |
| 767 | Geriatric Psychiatry | 1 | 0 | 2286 | 3663 |
| 767 | Industrial Sociology | 1 | 0 | 381 | 646 |
| 767 | Psycholinguistics | 1 | 0 | 1743 | 2805 |
| 767 | Neurolinguistics | 1 | 0 | 869 | 1451 |
| 767 | Autobiography | 1 | 0 | 207 | 337 |
| 767 | International Law | 1 | 0 | 773 | 1068 |
| 767 | Music | 1 | 0 | 1937 | 2800 |
| 767 | Mental Health | 1 | 0 | 3487 | 5530 |
| 767 | health behavior | 1 | 0 | 2099 | 3618 |
| 767 | Simulation | 1 | 0 | 517 | 1030 |
| 767 | Tourism | 1 | 0 | 2766 | 4256 |
| 767 | reforestation | 1 | 0 | 368 | 748 |
| 767 | Artificial Organs | 1 | 0 | 1465 | 2270 |
| 767 | Liquid Crystals | 1 | 0 | 1667 | 2415 |
| 767 | Biofeedback | 1 | 0 | 303 | 736 |
| 767 | Politics | 1 | 0 | 1390 | 1824 |
| 767 | Lymphoma | 1 | 0 | 1534 | 1832 |
| 767 | Language and Education | 1 | 0 | 346 | 609 |
| 767 | Behavioral research | 1 | 0 | 1193 | 2452 |
| 767 | Multiple Myeloma | 1 | 0 | 1521 | 1810 |
| 767 | Animal ecology | 2 | 0 | 1689 | 3273 |
| 767 | Leukemia | 1 | 0 | 2346 | 3088 |
| 767 | Cardiovascular diseases | 1 | 0 | 3214 | 4716 |
| 767 | visualization | 2 | 0 | 2533 | 4243 |
| 767 | Communication in organizations | 1 | 0 | 137 | 227 |
| 767 | constitutional courts | 1 | 0 | 187 | 295 |
| 767 | machinery | 1 | 0 | 1543 | 2455 |
| 767 | theoretical models | 1 | 0 | 517 | 1030 |
| 767 | afforestation | 1 | 0 | 368 | 748 |
| 767 | Diet | 1 | 0 | 4280 | 6391 |
| 767 | behavior therapy | 1 | 0 | 1645 | 2694 |
| 767 | teachers | 1 | 0 | 39 | 61 |
| 767 | artificial cells | 1 | 0 | 245 | 458 |
| 767 | public schools | 1 | 0 | 3 | 2 |
| 767 | Pancreatic diseases | 1 | 0 | 1112 | 1414 |
