| 1 | Medicine | 181 | 4.5K | 1746 | 2457 |
| 2 | Neurology | 103 | 4.3K | 1293 | 1388 |
| 3 | Psychophysiology | 51 | 3.2K | 820 | 639 |
| 4 | Neurophysiology | 62 | 3.1K | 768 | 793 |
| 5 | Psychiatry | 19 | 2.9K | 2361 | 1122 |
| 6 | Research | 93 | 2.1K | 2165 | 2713 |
| 7 | Environment | 37 | 2.1K | 1688 | 1914 |
| 8 | Climatology | 42 | 2.0K | 461 | 423 |
| 9 | Meteorology | 35 | 2.0K | 717 | 666 |
| 10 | Science | 87 | 1.9K | 2857 | 4900 |
| 11 | Brain | 42 | 1.9K | 907 | 815 |
| 12 | Psychopharmacology | 18 | 1.8K | 831 | 504 |
| 13 | Biochemistry | 55 | 1.7K | 3397 | 3454 |
| 14 | Pollution | 26 | 1.7K | 2476 | 2076 |
| 15 | Public Health | 78 | 1.5K | 1201 | 1786 |
| 16 | Geophysics | 31 | 1.5K | 1554 | 1254 |
| 17 | Neuropsychology | 31 | 1.5K | 791 | 608 |
| 18 | Ecology | 62 | 1.4K | 1741 | 2712 |
| 19 | Psychology | 8 | 1.3K | 4170 | 1476 |
| 20 | Physiology | 35 | 1.3K | 1659 | 1612 |
| 21 | Atmospheric Physics | 26 | 1.2K | 637 | 597 |
| 22 | Clinical Psychology | 2 | 1.2K | 2199 | 545 |
| 23 | Behavior | 27 | 1.1K | 1212 | 1304 |
| 24 | Biology | 57 | 1.1K | 3443 | 5725 |
| 25 | human behavior | 25 | 1.1K | 866 | 1027 |
| 26 | Atmospheric Chemistry | 20 | 1.1K | 452 | 472 |
| 27 | Biodiversity conservation | 11 | 1.1K | 1033 | 958 |
| 28 | Climate change | 10 | 1.0K | 654 | 851 |
| 28 | Eutrophication | 10 | 1.0K | 642 | 849 |
| 30 | Microbiology | 22 | 998 | 3590 | 3424 |
| 31 | Electrochemistry | 42 | 948 | 1411 | 1380 |
| 32 | Radiation | 6 | 942 | 2009 | 481 |
| 33 | bioclimatology | 5 | 940 | 782 | 121 |
| 34 | Biomedical Engineering | 38 | 934 | 1640 | 1870 |
| 35 | Toxicology | 42 | 925 | 1590 | 2061 |
| 36 | Pharmacology | 34 | 823 | 2235 | 2661 |
| 37 | Neurochemistry | 23 | 805 | 1090 | 1176 |
| 38 | Botany | 31 | 797 | 1621 | 1911 |
| 39 | Environmental Health | 23 | 775 | 2565 | 2774 |
| 40 | Animal Behavior | 19 | 761 | 835 | 918 |
| 41 | Ethology | 17 | 758 | 681 | 789 |
| 42 | energy conservation | 9 | 753 | 1214 | 784 |
| 43 | Neurobiology | 15 | 739 | 1050 | 1079 |
| 44 | Energy Policy | 10 | 709 | 1680 | 1340 |
| 45 | Nervous system | 20 | 707 | 1152 | 1403 |
| 46 | Building Materials | 3 | 694 | 1890 | 784 |
| 47 | Immunology | 23 | 677 | 1939 | 2379 |
| 48 | Molecular Biology | 33 | 649 | 3739 | 5197 |
| 49 | Depression | 3 | 609 | 411 | 201 |
| 49 | Anxiety Disorders | 3 | 609 | 637 | 312 |
| 49 | Anxiety | 3 | 609 | 632 | 311 |
| 52 | Vaccines | 13 | 527 | 1045 | 915 |
| 53 | Chemistry | 28 | 515 | 4959 | 6486 |
| 54 | environmental pollution | 16 | 510 | 2516 | 2832 |
| 55 | Liver diseases | 4 | 499 | 1688 | 1203 |
| 56 | Renewable Energy Sources | 12 | 487 | 1443 | 1952 |
| 57 | Electronics | 17 | 482 | 1924 | 1404 |
| 58 | Bioenergetics | 7 | 474 | 590 | 401 |
| 59 | Solar Energy | 6 | 437 | 1414 | 905 |
| 60 | Biophysics | 19 | 400 | 3436 | 3860 |
| 61 | Epidemiology | 27 | 399 | 1581 | 2468 |
| 62 | Water pollution | 6 | 396 | 2367 | 1864 |
| 63 | Engineering | 14 | 390 | 2594 | 1860 |
| 64 | Pediatric Neurology | 6 | 382 | 952 | 1107 |
| 65 | Hydrology | 13 | 372 | 1458 | 1393 |
| 66 | Plants | 14 | 344 | 1129 | 1486 |
| 67 | energy resources | 4 | 341 | 1353 | 1209 |
| 68 | Water | 5 | 317 | 2345 | 2101 |
| 69 | Hydrogeology | 2 | 311 | 1052 | 268 |
| 69 | Earth Sciences | 24 | 311 | 1394 | 2061 |
| 71 | Environmental Policy | 9 | 310 | 2270 | 2701 |
| 72 | Ecosystem management | 6 | 305 | 501 | 391 |
| 73 | Geothermal Energy | 1 | 304 | 541 | 91 |
| 74 | Wildlife conservation | 10 | 297 | 709 | 988 |
| 75 | Condensed Matter | 6 | 289 | 3060 | 2191 |
| 76 | Cytology | 8 | 288 | 3677 | 4012 |
| 77 | Health Policy | 11 | 282 | 1450 | 1573 |
| 77 | Genomics | 6 | 282 | 3126 | 2701 |
| 79 | Biological Systems | 10 | 279 | 262 | 285 |
| 80 | Electrical Engineering | 18 | 272 | 1765 | 1346 |
| 81 | Solid State Physics | 4 | 268 | 3897 | 2479 |
| 82 | Computer Science | 5 | 267 | 2084 | 868 |
| 83 | Plant physiology | 5 | 266 | 1955 | 1789 |
| 84 | Geology | 18 | 261 | 1619 | 2017 |
| 84 | Pathology | 6 | 261 | 2238 | 2086 |
| 86 | Public Health Administration | 10 | 252 | 201 | 138 |
| 86 | Astrophysics | 9 | 252 | 2506 | 2430 |
| 88 | Autoimmunity | 6 | 251 | 633 | 710 |
| 89 | Allergy | 5 | 250 | 1286 | 1465 |
| 90 | Biomass Energy | 4 | 248 | 2623 | 2171 |
| 91 | Astronomy | 12 | 246 | 1962 | 2333 |
| 91 | Neuromuscular diseases | 4 | 246 | 744 | 529 |
| 91 | Muscles | 4 | 246 | 996 | 816 |
| 94 | rehabilitation | 1 | 245 | 4413 | 1618 |
| 95 | Mathematics | 14 | 244 | 3983 | 3237 |
| 96 | Medical Physics | 9 | 243 | 1259 | 1220 |
| 96 | Primary health care | 3 | 243 | 2343 | 1106 |
| 98 | Heat Exchangers | 7 | 233 | 826 | 930 |
| 99 | Chromosome mapping | 5 | 229 | 1833 | 1745 |
| 99 | gene mapping | 5 | 229 | 2049 | 2040 |
| 101 | Environmental Toxicology | 6 | 226 | 2184 | 2306 |
| 101 | Reproduction | 5 | 226 | 2368 | 1850 |
| 103 | Medical genetics | 8 | 223 | 2402 | 3087 |
| 104 | environmental protection | 5 | 220 | 3528 | 3058 |
| 105 | Remote Sensing | 14 | 216 | 636 | 695 |
| 106 | atmospheric models | 4 | 213 | 705 | 677 |
| 107 | Economics | 14 | 208 | 2621 | 2682 |
| 108 | Memory | 5 | 206 | 1964 | 1751 |
| 109 | Plant Ecology | 11 | 204 | 1071 | 1663 |
| 110 | Bacteriology | 7 | 202 | 1614 | 2056 |
| 111 | Environmental monitoring | 6 | 199 | 3542 | 3849 |
| 112 | Biotechnology | 9 | 196 | 4919 | 5955 |
| 112 | Marine Biology | 14 | 196 | 1494 | 2158 |
| 112 | arthritis | 6 | 196 | 1180 | 1478 |
| 115 | Urology | 2 | 192 | 2762 | 1730 |
| 116 | Food | 7 | 189 | 2613 | 2814 |
| 117 | Spectrum analysis | 13 | 187 | 2942 | 3680 |
| 118 | economic policy | 8 | 185 | 1867 | 1351 |
| 119 | Chemical Engineering | 7 | 184 | 3820 | 4077 |
| 120 | Clinical Immunology | 5 | 183 | 1320 | 1209 |
| 121 | Psychoneuroimmunology | 3 | 182 | 824 | 771 |
| 121 | Neuroimmunology | 3 | 182 | 909 | 839 |
| 123 | Archaeology | 12 | 180 | 753 | 844 |
| 124 | Geography | 15 | 177 | 1174 | 1792 |
| 124 | Europe | 9 | 177 | 2364 | 2353 |
| 126 | Tropical Medicine | 21 | 176 | 663 | 1367 |
| 127 | Computational Fluid Dynamics | 5 | 174 | 533 | 406 |
| 127 | Alzheimer's disease | 15 | 174 | 866 | 1115 |
| 129 | Environmental Engineering | 7 | 173 | 3262 | 3735 |
| 129 | Health Services Research | 3 | 173 | 2308 | 1409 |
| 129 | Learning | 5 | 173 | 1238 | 1133 |
| 132 | Economic Development | 2 | 172 | 2565 | 1612 |
| 133 | Developing countries | 6 | 171 | 2061 | 1886 |
| 134 | Developmental Neurobiology | 10 | 170 | 221 | 380 |
| 135 | Obstetrics | 8 | 169 | 2212 | 2323 |
| 136 | Pediatrics | 6 | 164 | 2502 | 2928 |
| 136 | natural disasters | 9 | 164 | 721 | 1119 |
| 138 | Neurosurgery | 6 | 162 | 1051 | 1162 |
| 138 | wood | 1 | 162 | 927 | 268 |
| 140 | Physics | 14 | 161 | 6665 | 10384 |
| 140 | sanitation | 1 | 161 | 2888 | 2129 |
| 142 | Industrial Microbiology | 2 | 158 | 2859 | 2124 |
| 142 | Microbial Biotechnology | 2 | 158 | 1508 | 795 |
| 142 | Child | 4 | 158 | 2912 | 2217 |
| 145 | Product life cycle | 2 | 156 | 462 | 297 |
| 145 | green products | 2 | 156 | 415 | 293 |
| 147 | Transportation | 4 | 155 | 1677 | 1372 |
| 148 | Medical Microbiology | 6 | 151 | 2189 | 2907 |
| 148 | Food Microbiology | 3 | 151 | 1545 | 1475 |
| 150 | Solid State Chemistry | 3 | 150 | 2886 | 1982 |
| 151 | Respiration | 3 | 149 | 1923 | 1653 |
| 152 | Geriatrics | 4 | 148 | 3524 | 2765 |
| 153 | ecosystem | 4 | 146 | 1412 | 1581 |
| 154 | civilization | 8 | 144 | 932 | 194 |
| 155 | Biogeography | 3 | 143 | 1169 | 1317 |
| 156 | Optics | 10 | 142 | 3569 | 3426 |
| 157 | Materials Science | 4 | 141 | 5033 | 4378 |
| 157 | Paleoclimatology | 6 | 141 | 898 | 1112 |
| 157 | Latin America | 54 | 141 | 239 | 534 |
| 160 | Molecular Genetics | 6 | 140 | 1854 | 2380 |
| 160 | Immunity | 4 | 140 | 2199 | 2869 |
| 162 | Dementia | 14 | 137 | 878 | 1146 |
| 163 | Composite Materials | 3 | 135 | 3120 | 2813 |
| 163 | Ceramic materials | 3 | 135 | 1567 | 1113 |
| 165 | Superconductors | 6 | 134 | 551 | 464 |
| 166 | Entropy | 2 | 133 | 1654 | 641 |
| 167 | Environmental Management | 6 | 132 | 2547 | 3514 |
| 168 | Literature | 6 | 129 | 711 | 50 |
| 169 | food technology | 3 | 128 | 3068 | 2719 |
| 169 | Marine Pollution | 3 | 128 | 1411 | 1407 |
| 171 | Dermatology | 2 | 126 | 2738 | 1805 |
| 172 | Pediatric Dermatology | 1 | 125 | 1005 | 323 |
| 172 | Adolescent | 1 | 125 | 4519 | 2079 |
| 174 | Planets | 3 | 123 | 1848 | 1952 |
| 175 | Immunopathology | 3 | 121 | 1796 | 1686 |
| 175 | Virology | 2 | 121 | 4539 | 4280 |
| 175 | Natural history | 13 | 121 | 2615 | 6816 |
| 178 | Endocrinology | 7 | 119 | 2812 | 3855 |
| 178 | Timber | 1 | 119 | 98 | 13 |
| 178 | Forest products | 1 | 119 | 116 | 14 |
| 181 | emergency management | 6 | 118 | 606 | 801 |
| 182 | Molecular evolution | 4 | 117 | 1886 | 2102 |
| 183 | Biochemical Engineering | 1 | 116 | 5615 | 4532 |
| 183 | Geochemistry | 2 | 116 | 2723 | 2192 |
| 183 | Materials | 3 | 116 | 6717 | 5807 |
| 183 | biological evolution | 4 | 116 | 2260 | 2754 |
| 187 | Neurotoxicology | 2 | 115 | 887 | 690 |
| 187 | Apoptosis | 2 | 115 | 405 | 279 |
| 187 | neurotoxins | 2 | 115 | 405 | 279 |
| 187 | Neurotoxic agents | 2 | 115 | 405 | 279 |
| 187 | Nerve regeneration | 2 | 115 | 405 | 279 |
| 192 | Freezing | 1 | 114 | 743 | 226 |
| 193 | Developmental Biology | 2 | 113 | 3039 | 2759 |
| 193 | sedimentary basins | 2 | 113 | 293 | 235 |
| 195 | Data Mining | 3 | 112 | 2105 | 1957 |
| 195 | Precision medicine | 1 | 112 | 545 | 166 |
| 195 | data collection | 3 | 112 | 1370 | 1415 |
| 198 | Phylogeny | 2 | 111 | 1310 | 1207 |
| 199 | Emergency Medicine | 9 | 109 | 1178 | 1592 |
| 199 | cell physiology | 1 | 109 | 2854 | 2225 |
| 201 | Medical Anthropology | 2 | 108 | 1962 | 1839 |
| 202 | Environmental pollutants | 4 | 106 | 2482 | 2793 |
| 202 | radioactive waste | 4 | 106 | 728 | 1342 |
| 202 | industrial waste | 5 | 106 | 648 | 1347 |
| 202 | Hazardous waste | 4 | 106 | 886 | 1419 |
| 206 | Agricultural Ecology | 3 | 104 | 1359 | 1578 |
| 207 | Mycology | 6 | 103 | 1446 | 1846 |
| 208 | Plant diseases | 10 | 102 | 1261 | 1904 |
| 209 | Insects | 5 | 101 | 1415 | 1370 |
| 210 | Geodesy | 1 | 100 | 1565 | 729 |
| 210 | solar cells | 3 | 100 | 1093 | 1274 |
| 212 | Metabolism | 5 | 98 | 2923 | 3990 |
| 212 | plant molecular biology | 2 | 98 | 2096 | 2216 |
| 214 | Cognition | 1 | 97 | 3095 | 1956 |
| 215 | Biocompatible Materials | 2 | 95 | 5015 | 4944 |
| 216 | United States | 8 | 93 | 4476 | 5773 |
| 216 | United Kingdom | 1 | 93 | 3375 | 2182 |
| 216 | Radiation effects | 3 | 93 | 731 | 837 |
| 219 | Cell Biology | 3 | 91 | 5055 | 5579 |
| 219 | solar power | 2 | 91 | 1188 | 1203 |
| 219 | Raman spectroscopy | 5 | 91 | 706 | 908 |
| 219 | Sedimentary rocks | 1 | 91 | 1065 | 719 |
| 219 | biochemical markers | 5 | 91 | 719 | 896 |
| 224 | Bioinorganic chemistry | 2 | 89 | 2002 | 1589 |
| 224 | pollutants | 3 | 89 | 2360 | 2651 |
| 224 | movement | 2 | 89 | 460 | 409 |
| 227 | Earthquake Engineering | 5 | 87 | 1109 | 1439 |
| 227 | Synaptic Transmission | 3 | 87 | 616 | 706 |
| 227 | global environmental change | 5 | 87 | 763 | 1346 |
| 227 | Attention | 3 | 87 | 2430 | 2409 |
| 227 | Solar System | 2 | 87 | 1109 | 971 |
| 232 | Nutrition | 4 | 86 | 5026 | 5636 |
| 232 | Cytogenetics | 3 | 86 | 2022 | 2522 |
| 232 | Engineering Geology | 2 | 86 | 1938 | 1635 |
| 232 | Diagnosis | 4 | 86 | 631 | 648 |
| 232 | Developmental Immunology | 4 | 86 | 819 | 1065 |
| 237 | Emergency Medical Services | 7 | 84 | 554 | 874 |
| 237 | Clinical Chemistry | 5 | 84 | 3084 | 3985 |
| 237 | Superconductivity | 3 | 84 | 581 | 463 |
| 237 | Technology | 2 | 84 | 6484 | 4695 |
| 237 | coal | 1 | 84 | 2817 | 2252 |
| 242 | Agronomy | 4 | 83 | 468 | 814 |
| 242 | disease susceptibility | 3 | 83 | 429 | 421 |
| 242 | symptoms | 3 | 83 | 429 | 421 |
| 245 | Agriculture | 3 | 82 | 2927 | 2725 |
| 246 | Human biology | 3 | 81 | 766 | 662 |
| 247 | Serbia | 62 | 80 | 7 | 28 |
| 247 | Sites | 4 | 80 | 539 | 843 |
| 249 | Ocean Engineering | 4 | 78 | 1641 | 1968 |
| 249 | Adhesion | 1 | 78 | 1390 | 660 |
| 249 | Molecular Spectroscopy | 7 | 78 | 1388 | 2097 |
| 249 | adhesives | 1 | 78 | 1479 | 668 |
| 253 | Microbial Ecology | 2 | 77 | 3336 | 3817 |
| 253 | Diabetes mellitus | 1 | 77 | 4120 | 3397 |
| 253 | Geobiology | 1 | 77 | 958 | 655 |
| 253 | Diabetes | 1 | 77 | 4212 | 3467 |
| 257 | Embryology | 6 | 76 | 1450 | 2415 |
| 257 | Metabolic diseases | 2 | 76 | 3627 | 3782 |
| 259 | Forensic Genetics | 3 | 75 | 268 | 337 |
| 259 | Sports Medicine | 7 | 75 | 2175 | 2721 |
| 259 | Forest Ecology | 6 | 75 | 854 | 1467 |
| 259 | Inflammation | 4 | 75 | 1373 | 2053 |
| 259 | Forest Management | 6 | 75 | 808 | 1406 |
| 259 | educational planning | 2 | 75 | 598 | 495 |
| 259 | environmental issues | 4 | 75 | 386 | 660 |
| 266 | Bacterial infections | 3 | 74 | 1148 | 1662 |
| 267 | Bioremediation | 2 | 73 | 1273 | 1215 |
| 267 | atmosphere | 4 | 73 | 807 | 1122 |
| 269 | Genetics | 5 | 72 | 4208 | 5931 |
| 269 | medical education | 5 | 72 | 1891 | 2330 |
| 269 | Biodiversity | 6 | 72 | 2008 | 3060 |
| 272 | Sociology | 4 | 71 | 3360 | 3659 |
| 272 | Geomorphology | 6 | 71 | 1151 | 1914 |
| 272 | Public Policy | 6 | 71 | 1486 | 2495 |
| 275 | Adolescent Medicine | 1 | 69 | 1439 | 1368 |
| 275 | mammals | 4 | 69 | 1123 | 1306 |
| 277 | Analytical Chemistry | 3 | 67 | 5311 | 5589 |
| 277 | Photochemistry | 4 | 67 | 1922 | 2384 |
| 277 | Autoimmune diseases | 3 | 67 | 817 | 1151 |
| 280 | Bioengineering | 3 | 66 | 5422 | 6374 |
| 280 | Operations Research | 3 | 66 | 2583 | 2513 |
| 282 | Nanotechnology | 2 | 64 | 6575 | 6496 |
| 282 | Statistics | 3 | 64 | 3305 | 2840 |
| 282 | Critical Care Medicine | 4 | 64 | 1768 | 2853 |
| 282 | Sleep Disorders | 2 | 64 | 2601 | 2244 |
| 282 | Mental Disorders | 7 | 64 | 2710 | 4533 |
| 282 | Land use | 3 | 64 | 1348 | 1705 |
| 282 | Fungi | 3 | 64 | 1244 | 1534 |
| 282 | Sleep | 2 | 64 | 2610 | 2253 |
| 290 | Hydrometeorology | 1 | 63 | 437 | 433 |
| 290 | France | 1 | 63 | 902 | 289 |
| 290 | Diplomatic relations | 1 | 63 | 1462 | 406 |
| 293 | disease outbreaks | 1 | 62 | 1234 | 1034 |
| 293 | Epidemics | 1 | 62 | 1156 | 1017 |
| 295 | Proteomics | 3 | 61 | 1468 | 2039 |
| 295 | Light | 3 | 61 | 1227 | 1783 |
| 295 | miniaturization | 2 | 61 | 2680 | 2957 |
| 298 | Oncology | 2 | 60 | 3467 | 4137 |
| 298 | Rheumatology | 2 | 60 | 1930 | 2000 |
| 298 | Critical Care | 2 | 60 | 2574 | 3041 |
| 298 | Microelectronics | 1 | 60 | 3140 | 2527 |
| 298 | soil management | 1 | 60 | 1101 | 985 |
| 298 | Ethnology | 6 | 60 | 1232 | 1485 |
| 298 | tillage | 1 | 60 | 847 | 847 |
| 298 | Aging | 2 | 60 | 4441 | 3998 |
| 306 | Biodegradation | 1 | 59 | 1576 | 1278 |
| 306 | mycoses | 1 | 59 | 1804 | 1703 |
| 306 | Host-parasite interactions | 2 | 59 | 1933 | 2620 |
| 306 | Perception | 2 | 59 | 3082 | 2968 |
| 310 | Anthropology | 4 | 58 | 1750 | 1769 |
| 310 | Paleontology | 10 | 58 | 881 | 1517 |
| 310 | Human genetics | 3 | 58 | 2809 | 4598 |
| 310 | Autoantibodies | 2 | 58 | 940 | 1155 |
| 310 | Parasitology | 6 | 58 | 2198 | 3193 |
| 315 | Decision making | 2 | 57 | 2383 | 2121 |
| 315 | Fisheries | 3 | 57 | 2035 | 2154 |
| 317 | Physical Geography | 2 | 54 | 835 | 719 |
| 317 | Energy Conversion | 3 | 54 | 1381 | 2015 |
| 317 | Energy Storage | 3 | 54 | 1501 | 1771 |
| 317 | Human Geography | 2 | 54 | 1553 | 1294 |
| 317 | Pregnancy | 4 | 54 | 888 | 1363 |
| 322 | Geodynamics | 1 | 53 | 1456 | 1238 |
| 322 | Sports | 3 | 53 | 2508 | 2394 |
| 324 | soil conservation | 4 | 52 | 758 | 1277 |
| 325 | Structural Engineering | 1 | 51 | 2826 | 2012 |
| 325 | Paleoecology | 4 | 51 | 1042 | 1542 |
| 325 | Paleogeography | 4 | 51 | 928 | 1431 |
| 325 | cell adhesion molecules | 2 | 51 | 804 | 1075 |
| 325 | cytokines | 2 | 51 | 2071 | 2384 |
| 325 | cell interaction | 2 | 51 | 1794 | 2139 |
| 325 | Cell communication | 2 | 51 | 1241 | 1558 |
| 332 | Social Sciences | 17 | 50 | 1772 | 4092 |
| 332 | Coastal zone management | 2 | 50 | 999 | 1083 |
| 332 | water supply | 1 | 50 | 1848 | 1617 |
| 332 | Entomology | 5 | 50 | 2331 | 2773 |
| 336 | Oceanography | 6 | 49 | 1614 | 2556 |
| 336 | Herbal medicine | 2 | 49 | 1056 | 1503 |
| 338 | air quality | 2 | 48 | 381 | 419 |
| 338 | Atomic spectroscopy | 2 | 48 | 1634 | 1559 |
| 338 | Spain | 22 | 48 | 181 | 380 |
| 341 | Quality Control | 2 | 47 | 2736 | 2863 |
| 341 | Transport | 2 | 47 | 921 | 1146 |
| 341 | Marine resources | 2 | 47 | 1027 | 1147 |
| 341 | Sea | 2 | 47 | 828 | 978 |
| 341 | Fishery resources | 2 | 47 | 931 | 1071 |
| 346 | Humanities | 3 | 46 | 2341 | 1801 |
| 346 | hazard mitigation | 3 | 46 | 1079 | 1571 |
| 346 | animals | 9 | 46 | 805 | 1676 |
| 346 | Primates | 3 | 46 | 925 | 1106 |
| 350 | Environmental Chemistry | 2 | 45 | 3232 | 3748 |
| 350 | Infection control | 2 | 45 | 1143 | 1377 |
| 350 | Photogrammetry | 10 | 45 | 413 | 574 |
| 350 | food handling | 1 | 45 | 1812 | 1784 |
| 350 | Hospitals | 2 | 45 | 1172 | 1243 |
| 355 | Respiratory Infections | 2 | 44 | 574 | 689 |
| 355 | infection | 7 | 44 | 1412 | 3101 |
| 355 | Influenza | 2 | 44 | 457 | 582 |
| 358 | Soil Science | 4 | 43 | 1930 | 2851 |
| 358 | biobanks | 1 | 43 | 378 | 199 |
| 358 | Energy Harvesting | 1 | 43 | 815 | 1034 |
| 358 | Visual Perception | 1 | 43 | 3711 | 3089 |
| 362 | Pharmacogenetics | 2 | 41 | 1710 | 2217 |
| 362 | Conservation Biology | 3 | 41 | 1410 | 2087 |
| 362 | Ethnobotany | 1 | 41 | 493 | 501 |
| 362 | Cytoskeleton | 1 | 41 | 587 | 593 |
| 362 | Environmental Geochemistry | 3 | 41 | 599 | 1009 |
| 362 | Traditional medicine | 1 | 41 | 691 | 600 |
| 362 | ethnobiology | 1 | 41 | 552 | 554 |
| 362 | Antarctica | 1 | 41 | 1089 | 732 |
| 362 | Phytotherapy | 1 | 41 | 1832 | 1678 |
| 362 | Minerals | 3 | 41 | 894 | 1346 |
| 362 | Ethnomedicine | 1 | 41 | 391 | 492 |
| 373 | Pharmacogenomics | 1 | 40 | 779 | 787 |
| 373 | Population | 3 | 40 | 1266 | 1703 |
| 373 | health planning | 5 | 40 | 2127 | 3391 |
| 376 | plant communities | 3 | 39 | 1278 | 2034 |
| 376 | Nitric oxide | 1 | 39 | 797 | 700 |
| 378 | Hematology | 2 | 38 | 4628 | 4527 |
| 378 | Green Chemistry | 3 | 38 | 1955 | 3142 |
| 378 | Economic History | 12 | 38 | 2294 | 4178 |
| 378 | Sustainable Engineering | 3 | 38 | 1929 | 2907 |
| 382 | Engineering Mathematics | 3 | 37 | 3116 | 3080 |
| 382 | Hydraulic Engineering | 4 | 37 | 930 | 1426 |
| 382 | Forensic Psychiatry | 3 | 37 | 688 | 846 |
| 385 | Education | 22 | 36 | 1677 | 4851 |
| 385 | Ethnoarchaeology | 1 | 36 | 372 | 344 |
| 385 | histological techniques | 1 | 36 | 1467 | 1618 |
| 385 | older people | 2 | 36 | 2622 | 2273 |
| 385 | Molecular structure | 3 | 36 | 3077 | 3768 |
| 390 | Substance Abuse | 2 | 35 | 2170 | 2546 |
| 390 | Elderly | 1 | 35 | 2662 | 1457 |
| 390 | Cancer | 2 | 35 | 5307 | 6407 |
| 393 | Zoology | 2 | 34 | 3703 | 3648 |
| 393 | Structural dynamics | 3 | 34 | 1207 | 1926 |
| 393 | Clinical Biochemistry | 1 | 34 | 2744 | 2375 |
| 393 | Paleobiology | 5 | 34 | 279 | 467 |
| 393 | Water quality management | 2 | 34 | 2699 | 3000 |
| 393 | Evolution | 7 | 34 | 1522 | 3557 |
| 399 | Nursing | 6 | 33 | 1670 | 2916 |
| 399 | Fluid Mechanics | 6 | 33 | 1505 | 2495 |
| 399 | Regional Planning | 3 | 33 | 1837 | 2355 |
| 399 | soil microbiology | 2 | 33 | 2108 | 3317 |
| 403 | Pharmacognosy | 1 | 32 | 3394 | 3569 |
| 403 | Sedimentology | 2 | 32 | 903 | 1200 |
| 403 | Research Design | 1 | 32 | 2726 | 2530 |
| 403 | Medicinal plants | 1 | 32 | 2830 | 2928 |
| 403 | Neuroplasticity | 10 | 32 | 98 | 880 |
| 403 | neuronal plasticity | 10 | 32 | 67 | 778 |
| 409 | System analysis | 3 | 31 | 3046 | 3909 |
| 409 | Reservoirs | 1 | 31 | 450 | 311 |
| 409 | North America | 1 | 31 | 2006 | 1611 |
| 412 | Oxidative stress | 1 | 30 | 2314 | 2755 |
| 412 | Cellular senescence | 1 | 30 | 1565 | 1940 |
| 412 | Multiple sclerosis | 2 | 30 | 968 | 999 |
| 415 | Artificial Intelligence | 2 | 29 | 5270 | 5695 |
| 415 | Agricultural Chemistry | 1 | 29 | 4125 | 4056 |
| 415 | Systems Analysis | 2 | 29 | 1645 | 1920 |
| 415 | Bioethics | 1 | 29 | 1897 | 1499 |
| 415 | Medical Ethics | 1 | 29 | 2458 | 1923 |
| 415 | Fracture mechanics | 1 | 29 | 2453 | 2294 |
| 415 | land degradation | 2 | 29 | 749 | 1184 |
| 415 | China | 2 | 29 | 4402 | 5007 |
| 415 | drug addiction | 1 | 29 | 2283 | 2434 |
| 415 | alcoholism | 1 | 29 | 2950 | 2983 |
| 415 | drug control | 1 | 29 | 799 | 841 |
| 415 | degradation | 2 | 29 | 749 | 1184 |
| 427 | Photography | 5 | 28 | 1717 | 1234 |
| 427 | Mental illness | 5 | 28 | 2079 | 4218 |
| 429 | concrete | 1 | 27 | 1778 | 1948 |
| 429 | Administration | 2 | 27 | 115 | 152 |
| 429 | livestock | 8 | 27 | 361 | 870 |
| 432 | Immunochemistry | 1 | 26 | 2172 | 2090 |
| 432 | Genetic variation | 1 | 26 | 304 | 327 |
| 432 | Infrared spectroscopy | 2 | 26 | 503 | 824 |
| 432 | bats | 2 | 26 | 177 | 257 |
| 432 | Antigens | 2 | 26 | 1420 | 1888 |
| 432 | carbon monoxide | 1 | 26 | 735 | 981 |
| 438 | Sustainable agriculture | 2 | 25 | 1116 | 1564 |
| 438 | Infections | 4 | 25 | 1362 | 2953 |
| 438 | Electrophoresis | 1 | 25 | 3176 | 3311 |
| 438 | Energy Consumption | 1 | 25 | 529 | 580 |
| 438 | dietary supplements | 1 | 25 | 1681 | 1933 |
| 438 | Sexual health | 1 | 25 | 1627 | 1384 |
| 438 | Chromatography | 1 | 25 | 3154 | 3147 |
| 438 | Landslides | 1 | 25 | 540 | 712 |
| 438 | Chromatographic analysis | 1 | 25 | 3596 | 3430 |
| 447 | Signal Processing | 3 | 24 | 2381 | 3297 |
| 447 | Nanostructured Materials | 3 | 24 | 3621 | 5239 |
| 447 | Travel | 7 | 24 | 576 | 1856 |
| 447 | Electrochemical Analysis | 2 | 24 | 2106 | 2717 |
| 447 | locomotion | 4 | 24 | 706 | 1459 |
| 447 | posture | 4 | 24 | 706 | 1459 |
| 447 | gait | 4 | 24 | 706 | 1459 |
| 447 | walking | 4 | 24 | 706 | 1459 |
| 455 | Population Genetics | 2 | 23 | 1779 | 2745 |
| 455 | soil pollution | 2 | 23 | 854 | 1267 |
| 455 | Molecular ecology | 2 | 23 | 1615 | 2752 |
| 455 | Screening | 1 | 23 | 502 | 534 |
| 455 | Biometrics | 2 | 23 | 1627 | 1991 |
| 455 | Invertebrates | 1 | 23 | 1314 | 1387 |
| 461 | Natural Sciences | 6 | 22 | 66 | 231 |
| 461 | Demography | 1 | 22 | 1483 | 1532 |
| 461 | Public Administration | 8 | 22 | 970 | 2188 |
| 461 | economic forecasting | 1 | 22 | 731 | 779 |
| 461 | Forecasting | 1 | 22 | 1160 | 1114 |
| 461 | Reproductive toxicology | 6 | 22 | 356 | 1248 |
| 461 | environmental exposure | 5 | 22 | 1866 | 4389 |
| 468 | Intelligent Transportation Systems | 2 | 21 | 1071 | 1526 |
| 468 | Marine Ecology | 2 | 21 | 1073 | 1530 |
| 468 | Medical Oncology | 1 | 21 | 3887 | 3993 |
| 468 | Metallurgy | 2 | 21 | 3498 | 3911 |
| 468 | Carcinogenesis | 1 | 21 | 2094 | 2593 |
| 468 | Edible plants | 1 | 21 | 557 | 746 |
| 468 | Hormones | 2 | 21 | 1994 | 3001 |
| 468 | Flood control | 2 | 21 | 402 | 657 |
| 468 | carcinogens | 1 | 21 | 2096 | 2564 |
| 468 | mutagens | 1 | 21 | 1701 | 2188 |
| 468 | Metals | 2 | 21 | 3154 | 3718 |
| 479 | Pediatric Rheumatology | 1 | 20 | 567 | 589 |
| 479 | preimplantation genetic diagnosis | 1 | 20 | 997 | 1164 |
| 479 | embryo transfer | 1 | 20 | 1030 | 1196 |
| 479 | rare diseases | 1 | 20 | 1446 | 1647 |
| 479 | Immune system | 1 | 20 | 2128 | 2602 |
| 484 | Anatomy | 7 | 19 | 1676 | 3949 |
| 484 | Land Use Planning | 1 | 19 | 716 | 904 |
| 484 | Restoration Ecology | 1 | 19 | 969 | 1129 |
| 484 | Alternative Medicine | 1 | 19 | 3783 | 4154 |
| 484 | Evidence-Based Medicine | 1 | 19 | 2777 | 2846 |
| 484 | complementary therapies | 1 | 19 | 4157 | 4387 |
| 484 | probabilities | 1 | 19 | 2186 | 1710 |
| 484 | Information Science | 4 | 19 | 2689 | 4958 |
| 484 | Gastrointestinal diseases | 1 | 19 | 1629 | 1740 |
| 493 | Asthma | 1 | 18 | 1591 | 1745 |
| 493 | Risk Management | 1 | 18 | 1718 | 1898 |
| 493 | Greenhouse gases | 1 | 18 | 731 | 1055 |
| 493 | Bipolar Disorder | 1 | 18 | 768 | 991 |
| 493 | Flood forecasting | 1 | 18 | 275 | 430 |
| 493 | biological invasions | 2 | 18 | 905 | 1510 |
| 499 | Schizophrenia | 1 | 17 | 1983 | 2359 |
| 499 | environmental indicators | 2 | 17 | 1650 | 2882 |
| 499 | Neural circuitry | 2 | 17 | 2763 | 4070 |
| 499 | Child Development | 3 | 17 | 2482 | 4230 |
| 499 | Parasitic Diseases | 3 | 17 | 2726 | 4532 |
| 499 | Medical innovations | 1 | 17 | 2233 | 3278 |
| 499 | management | 3 | 17 | 4076 | 6135 |
| 499 | biomimicry | 1 | 17 | 340 | 489 |
| 499 | Cell death | 1 | 17 | 2228 | 2958 |
| 499 | drug toxicity | 1 | 17 | 1097 | 1508 |
| 509 | Immunotherapy | 3 | 16 | 2404 | 4394 |
| 509 | Chemical Ecology | 1 | 16 | 1023 | 1402 |
| 509 | Morphology | 5 | 16 | 740 | 1591 |
| 509 | Geomagnetism | 1 | 16 | 1225 | 1393 |
| 509 | Microprocessors | 1 | 16 | 1158 | 1211 |
| 509 | Cardiopulmonary Resuscitation | 4 | 16 | 124 | 305 |
| 509 | cardiac arrest | 4 | 16 | 124 | 305 |
| 509 | Physical fitness | 1 | 16 | 2001 | 2250 |
| 509 | Telecommunication | 3 | 16 | 2794 | 3810 |
| 509 | pheromones | 1 | 16 | 948 | 1333 |
| 509 | computer networks | 2 | 16 | 3406 | 4239 |
| 520 | Forensic Psychology | 1 | 15 | 845 | 915 |
| 520 | Process Control | 1 | 15 | 1643 | 2242 |
| 520 | Immunogenetics | 1 | 15 | 1544 | 1885 |
| 523 | Sustainable Development | 2 | 14 | 3222 | 4872 |
| 523 | Robotics | 3 | 14 | 1960 | 3287 |
| 523 | Urban Policy | 1 | 14 | 1558 | 2056 |
| 523 | Cell division | 1 | 14 | 1240 | 1682 |
| 523 | Geriatric Oncology | 1 | 14 | 1340 | 1801 |
| 523 | sustainability | 1 | 14 | 1750 | 2265 |
| 523 | Cell differentiation | 1 | 14 | 3181 | 4155 |
| 523 | Stem cells | 1 | 14 | 3025 | 3697 |
| 523 | Parasites | 3 | 14 | 2004 | 3528 |
| 523 | urban forestry | 1 | 14 | 644 | 841 |
| 523 | violence | 2 | 14 | 1410 | 2324 |
| 523 | Aggression | 2 | 14 | 672 | 1313 |
| 535 | Distance Education | 3 | 13 | 512 | 1216 |
| 535 | Evolutionary Genetics | 1 | 13 | 1557 | 2099 |
| 535 | Molecular Epidemiology | 1 | 13 | 1557 | 2099 |
| 535 | Immunopharmacology | 3 | 13 | 1306 | 2749 |
| 535 | preventive medicine | 3 | 13 | 1749 | 3648 |
| 535 | Immunotoxicology | 3 | 13 | 329 | 983 |
| 535 | Cement | 1 | 13 | 1122 | 1481 |
| 535 | freshwater biology | 1 | 13 | 1829 | 2199 |
| 543 | Automation | 4 | 12 | 1923 | 3661 |
| 543 | Occupational Health | 1 | 12 | 2606 | 2666 |
| 543 | Organizational Sociology | 1 | 12 | 673 | 825 |
| 543 | Pharmaceutical Chemistry | 2 | 12 | 5513 | 7622 |
| 543 | Anti-inflammatory agents | 1 | 12 | 588 | 877 |
| 543 | occupational diseases | 1 | 12 | 2081 | 2857 |
| 543 | Art | 1 | 12 | 905 | 398 |
| 543 | Social policy | 2 | 12 | 1505 | 2220 |
| 551 | Medical Laboratory Science | 1 | 11 | 4166 | 5250 |
| 551 | Database Management | 1 | 11 | 1469 | 1782 |
| 551 | air quality management | 1 | 11 | 1240 | 1932 |
| 551 | Drug design | 2 | 11 | 2650 | 4206 |
| 551 | Entrepreneurship | 1 | 11 | 1943 | 2441 |
| 551 | fuel cells | 2 | 11 | 1726 | 2756 |
| 551 | Antibodies | 1 | 11 | 1449 | 1874 |
| 558 | Nuclear Engineering | 1 | 10 | 2348 | 2375 |
| 558 | Chronobiology | 1 | 10 | 920 | 1215 |
| 558 | Nuclear Energy | 1 | 10 | 2225 | 2189 |
| 558 | Nuclear Physics | 1 | 10 | 5869 | 6133 |
| 558 | Developmental Psychology | 1 | 10 | 1974 | 2557 |
| 558 | Physical organic chemistry | 2 | 10 | 1925 | 2989 |
| 558 | symbiosis | 1 | 10 | 374 | 593 |
| 558 | Circadian rhythms | 1 | 10 | 662 | 1011 |
| 558 | biological clocks | 1 | 10 | 920 | 1215 |
| 558 | civil rights | 1 | 10 | 828 | 887 |
| 558 | Biogeochemistry | 1 | 10 | 2050 | 2868 |
| 558 | Social Change | 1 | 10 | 1941 | 2804 |
| 558 | Sexuality | 1 | 10 | 686 | 864 |
| 558 | Developmental Disabilities | 1 | 10 | 1943 | 2689 |
| 558 | World Bank | 1 | 10 | 134 | 236 |
| 558 | nuclear power | 1 | 10 | 1022 | 945 |
| 558 | circadian rhythm | 1 | 10 | 920 | 1215 |
| 558 | government | 1 | 10 | 1457 | 1277 |
| 558 | Japan | 1 | 10 | 4136 | 4420 |
| 558 | biological rhythms | 1 | 10 | 872 | 1182 |
| 558 | population geography | 1 | 10 | 832 | 1055 |
| 558 | civil service | 1 | 10 | 766 | 915 |
| 558 | sexual behavior | 1 | 10 | 1378 | 1864 |
| 581 | Information Technology | 1 | 9 | 5023 | 5415 |
| 581 | Philosophy | 5 | 9 | 1566 | 2001 |
| 581 | Computer Graphics | 1 | 9 | 3022 | 3636 |
| 581 | Computer Vision | 1 | 9 | 2226 | 2921 |
| 581 | Educational Technology | 1 | 9 | 3122 | 3775 |
| 581 | Solar power plants | 1 | 9 | 452 | 796 |
| 581 | Image Processing | 1 | 9 | 3705 | 4459 |
| 581 | Organometallic chemistry | 1 | 9 | 3335 | 3887 |
| 581 | Learning disabilities | 1 | 9 | 1582 | 2026 |
| 581 | Measurement | 2 | 9 | 1866 | 3255 |
| 581 | Photovoltaic Cells | 1 | 9 | 454 | 797 |
| 581 | Hypertension in pregnancy | 2 | 9 | 466 | 676 |
| 581 | Teaching | 3 | 9 | 2155 | 3857 |
| 581 | Language Arts | 1 | 9 | 231 | 304 |
| 581 | Paleopathology | 2 | 9 | 466 | 778 |
| 581 | Communication | 1 | 9 | 3995 | 4474 |
| 581 | Wind power | 1 | 9 | 685 | 899 |
| 581 | Intellectual disability | 1 | 9 | 1788 | 2225 |
| 581 | venom | 2 | 9 | 1340 | 2244 |
| 581 | Toxins | 2 | 9 | 1475 | 2425 |
| 601 | Law | 13 | 8 | 782 | 2196 |
| 601 | Industrial Engineering | 1 | 8 | 3541 | 4409 |
| 601 | Software Engineering | 1 | 8 | 1982 | 2223 |
| 601 | Orthopedics | 1 | 8 | 3068 | 3851 |
| 601 | Environmental Geology | 2 | 8 | 2232 | 3755 |
| 601 | Community Psychiatry | 1 | 8 | 2221 | 3056 |
| 601 | Soil dynamics | 2 | 8 | 646 | 1256 |
| 601 | Biomarkers | 2 | 8 | 717 | 1624 |
| 601 | Virulence | 2 | 8 | 1762 | 3351 |
| 601 | Psychiatric Epidemiology | 1 | 8 | 1119 | 1892 |
| 601 | Venezuela | 2 | 8 | 204 | 152 |
| 612 | Catalysis | 1 | 7 | 5124 | 6284 |
| 612 | Organic Chemistry | 2 | 7 | 4260 | 6116 |
| 612 | Pharmaceutical Technology | 1 | 7 | 2822 | 3816 |
| 612 | Plant Taxonomy | 3 | 7 | 494 | 1071 |
| 612 | Fluid Dynamics | 1 | 7 | 2181 | 2773 |
| 612 | Analytical Biochemistry | 1 | 7 | 3425 | 4627 |
| 612 | Genetic testing | 1 | 7 | 868 | 1295 |
| 612 | Magnetic Resonance Spectroscopy | 2 | 7 | 1762 | 2767 |
| 612 | nuclear magnetic resonance spectroscopy | 2 | 7 | 1115 | 1782 |
| 612 | Groundwater | 1 | 7 | 1378 | 1898 |
| 612 | Transplantation | 1 | 7 | 2327 | 3000 |
| 612 | city planning | 2 | 7 | 2329 | 3859 |
| 612 | Growth | 2 | 7 | 1753 | 3141 |
| 612 | food industry | 1 | 7 | 1521 | 2159 |
| 612 | NMR | 2 | 7 | 809 | 1391 |
| 612 | magnetic resonance | 2 | 7 | 853 | 1440 |
| 628 | Political Science | 3 | 6 | 2212 | 3280 |
| 628 | Econometrics | 2 | 6 | 1895 | 2846 |
| 628 | Numerical Analysis | 1 | 6 | 4004 | 4628 |
| 628 | Microeconomics | 1 | 6 | 687 | 849 |
| 628 | Lipid metabolism | 1 | 6 | 925 | 1513 |
| 628 | Qualitative Research | 1 | 6 | 1019 | 1483 |
| 628 | Photobiology | 1 | 6 | 2705 | 3721 |
| 628 | social conflict | 2 | 6 | 316 | 686 |
| 628 | Lipids | 1 | 6 | 2681 | 3819 |
| 628 | geological modeling | 2 | 6 | 780 | 1598 |
| 628 | Lipid | 1 | 6 | 931 | 1518 |
| 628 | Mountains | 1 | 6 | 951 | 1301 |
| 628 | mathematical concepts | 1 | 6 | 894 | 1247 |
| 628 | pigments | 1 | 6 | 1545 | 2257 |
| 628 | Plant cells | 1 | 6 | 1932 | 2908 |
| 628 | Aquatic ecology | 2 | 6 | 1408 | 2566 |
| 644 | Radiology | 2 | 5 | 2571 | 4054 |
| 644 | Global Health | 1 | 5 | 2577 | 3740 |
| 644 | Cartography | 6 | 5 | 352 | 1282 |
| 644 | Underwater Archaeology | 1 | 5 | 284 | 340 |
| 644 | Plant Morphology | 1 | 5 | 1153 | 1700 |
| 644 | Veterinary Immunology | 1 | 5 | 755 | 1228 |
| 644 | Human-Computer Interaction | 1 | 5 | 3059 | 4280 |
| 644 | health services accessibility | 1 | 5 | 2116 | 3187 |
| 644 | epilepsy | 1 | 5 | 2016 | 2932 |
| 644 | Simulation Methods | 1 | 5 | 2098 | 2842 |
| 644 | Mass Spectrometry | 1 | 5 | 2360 | 3282 |
| 644 | Action Research | 1 | 5 | 512 | 918 |
| 644 | Freeze-Drying | 1 | 5 | 1111 | 1434 |
| 644 | Hypothermia | 1 | 5 | 1111 | 1434 |
| 644 | Freeze Drying | 1 | 5 | 1111 | 1434 |
| 644 | energy development | 1 | 5 | 1951 | 2961 |
| 644 | weather | 1 | 5 | 1230 | 2055 |
| 644 | Trace elements | 1 | 5 | 647 | 1236 |
| 644 | recreation | 1 | 5 | 1275 | 1706 |
| 644 | Leisure | 1 | 5 | 682 | 1068 |
| 644 | bees | 2 | 5 | 560 | 1162 |
| 665 | Civil Engineering | 2 | 4 | 2557 | 3866 |
| 665 | Systems Engineering | 2 | 4 | 3187 | 5056 |
| 665 | Criminal psychology | 1 | 4 | 1417 | 1982 |
| 665 | Control Theory | 1 | 4 | 2912 | 3630 |
| 665 | Combinatorial chemistry | 1 | 4 | 1810 | 2800 |
| 665 | Ichthyology | 1 | 4 | 1017 | 1403 |
| 665 | Labor Mobility | 1 | 4 | 84 | 81 |
| 665 | Herpetology | 1 | 4 | 727 | 1039 |
| 665 | Nanostructures | 1 | 4 | 4054 | 5380 |
| 665 | Randomized Controlled Trials | 1 | 4 | 2564 | 3801 |
| 665 | Human trafficking | 1 | 4 | 185 | 300 |
| 665 | Adaptive control systems | 1 | 4 | 1181 | 1701 |
| 665 | nucleic acids | 1 | 4 | 3190 | 4430 |
| 665 | peptides | 1 | 4 | 1938 | 2829 |
| 665 | emigration | 1 | 4 | 69 | 74 |
| 665 | immigration | 1 | 4 | 444 | 760 |
| 665 | Criminal behavior | 1 | 4 | 433 | 710 |
| 665 | Internal migration | 1 | 4 | 69 | 74 |
| 665 | Amphibians | 1 | 4 | 698 | 862 |
| 665 | Structure-activity relationship | 1 | 4 | 999 | 1505 |
| 665 | Australia | 3 | 4 | 2498 | 5638 |
| 686 | Chemotherapy | 2 | 3 | 2406 | 4369 |
| 686 | Psychiatric Nursing | 1 | 3 | 1408 | 2194 |
| 686 | Mathematical Physics | 1 | 3 | 4959 | 5600 |
| 686 | Bioacoustics | 2 | 3 | 129 | 478 |
| 686 | Patient Safety | 1 | 3 | 225 | 472 |
| 686 | Organ transplantation | 1 | 3 | 863 | 1280 |
| 686 | Business | 2 | 3 | 3120 | 5205 |
| 686 | X-rays | 1 | 3 | 1520 | 2102 |
| 686 | Documentation | 3 | 3 | 383 | 1066 |
| 686 | Migration | 1 | 3 | 457 | 821 |
| 686 | irrigation | 1 | 3 | 737 | 1202 |
| 686 | drainage | 1 | 3 | 617 | 995 |
| 686 | Personality Assessment | 1 | 3 | 1064 | 1683 |
| 686 | drug therapy | 2 | 3 | 3691 | 6355 |
| 686 | crime victims | 1 | 3 | 352 | 706 |
| 686 | child abuse | 1 | 3 | 1717 | 2741 |
| 702 | History | 3 | 2 | 1367 | 1659 |
| 702 | Health Services Administration | 1 | 2 | 2625 | 4178 |
| 702 | Coastal Engineering | 1 | 2 | 319 | 541 |
| 702 | Ceramics | 1 | 2 | 2731 | 3728 |
| 702 | Computational Biology | 1 | 2 | 5786 | 7942 |
| 702 | Adult Education | 1 | 2 | 1226 | 1914 |
| 702 | Radiography | 1 | 2 | 1398 | 2216 |
| 702 | Radiation Protection | 2 | 2 | 1138 | 2137 |
| 702 | radiation monitoring | 2 | 2 | 1033 | 2000 |
| 702 | Continuing Education | 1 | 2 | 910 | 1456 |
| 702 | Geochemical Modeling | 1 | 2 | 522 | 847 |
| 702 | Semiconductors | 1 | 2 | 3602 | 4765 |
| 702 | Enzyme inhibitors | 1 | 2 | 827 | 1531 |
| 702 | Biomechanics | 1 | 2 | 3037 | 4377 |
| 702 | Marine biodiversity | 2 | 2 | 398 | 900 |
| 702 | Health | 1 | 2 | 4910 | 7224 |
| 702 | Accreditation | 1 | 2 | 196 | 393 |
| 702 | Ornithology | 1 | 2 | 1789 | 2425 |
| 702 | Bioinformatics | 1 | 2 | 3997 | 5701 |
| 702 | Radioisotopes | 1 | 2 | 2487 | 3465 |
| 702 | clay | 1 | 2 | 1541 | 2427 |
| 702 | reasoning | 1 | 2 | 849 | 1323 |
| 702 | Glass | 1 | 2 | 2075 | 3068 |
| 702 | commerce | 1 | 2 | 3058 | 4182 |
| 702 | organization | 1 | 2 | 1443 | 2268 |
| 702 | pottery | 1 | 2 | 2000 | 2958 |
| 702 | Evolution equations | 1 | 2 | 356 | 576 |
| 702 | South America | 1 | 2 | 291 | 389 |
| 702 | Scotland | 1 | 2 | 293 | 519 |
| 702 | Radiation dosimetry | 2 | 2 | 793 | 1667 |
| 702 | Birds | 1 | 2 | 2139 | 2811 |
| 702 | planning | 1 | 2 | 1612 | 2716 |
| 702 | Fuzzy systems | 1 | 2 | 3205 | 4325 |
| 702 | Argentina | 7 | 2 | 115 | 440 |
| 702 | Economic planning | 1 | 2 | 1046 | 1797 |
| 737 | Pharmacy | 1 | 1 | 4218 | 6129 |
| 737 | Surface Chemistry | 3 | 1 | 4314 | 8000 |
| 737 | International Relations | 1 | 1 | 2265 | 2873 |
| 737 | Genetic engineering | 1 | 1 | 4188 | 6113 |
| 737 | Systems Biology | 1 | 1 | 3275 | 5188 |
| 737 | Organizational change | 1 | 1 | 1477 | 2539 |
| 737 | Reproductive health | 1 | 1 | 1727 | 2931 |
| 737 | Pest control | 5 | 1 | 103 | 709 |
| 737 | Technological Innovations | 1 | 1 | 2142 | 3569 |
| 737 | Nanoparticles | 1 | 1 | 3357 | 4993 |
| 737 | gene therapy | 1 | 1 | 2363 | 3684 |
| 737 | Wetland ecology | 1 | 1 | 1027 | 1814 |
| 737 | Plant breeding | 1 | 1 | 1697 | 2774 |
| 737 | Wetland conservation | 1 | 1 | 745 | 1417 |
| 737 | Transgenic plants | 1 | 1 | 1030 | 1803 |
| 737 | Pesticides | 5 | 1 | 543 | 2398 |
| 737 | economic conditions | 1 | 1 | 1264 | 1821 |
| 737 | Library Science | 3 | 1 | 1569 | 3583 |
| 737 | libraries | 3 | 1 | 909 | 1962 |
| 737 | coastal areas | 1 | 1 | 171 | 352 |
| 737 | coastal archaeology | 1 | 1 | 171 | 352 |
| 737 | Petroleum | 1 | 1 | 684 | 1126 |
| 737 | Genetic therapy | 1 | 1 | 2523 | 3797 |
| 737 | islands | 1 | 1 | 171 | 352 |
| 737 | Soviet Union | 1 | 1 | 1631 | 2372 |
| 737 | Microscopy | 1 | 1 | 3342 | 4724 |
| 737 | natural gas | 1 | 1 | 864 | 1405 |
| 737 | Educational evaluation | 1 | 1 | 392 | 750 |
| 737 | India | 1 | 1 | 3814 | 4997 |
| 737 | Wetlands | 1 | 1 | 760 | 1439 |
| 767 | Arts | 1 | 0 | 1130 | 1639 |
| 767 | Mechanical Engineering | 2 | 0 | 3576 | 6198 |
| 767 | Surgery | 1 | 0 | 3919 | 5419 |
| 767 | Linguistics | 1 | 0 | 2879 | 4022 |
| 767 | Architecture | 1 | 0 | 1350 | 1933 |
| 767 | Insurance Law | 1 | 0 | 69 | 35 |
| 767 | Mathematics Education | 1 | 0 | 895 | 1396 |
| 767 | Constitutional Law | 1 | 0 | 473 | 623 |
| 767 | Ergonomics | 1 | 0 | 2129 | 3291 |
| 767 | Public Relations | 1 | 0 | 1009 | 1770 |
| 767 | Criminal Law | 1 | 0 | 551 | 926 |
| 767 | Geriatric Psychiatry | 1 | 0 | 2304 | 3717 |
| 767 | Industrial Sociology | 1 | 0 | 379 | 644 |
| 767 | Psycholinguistics | 1 | 0 | 1765 | 2840 |
| 767 | Neurolinguistics | 1 | 0 | 863 | 1454 |
| 767 | Autobiography | 1 | 0 | 199 | 334 |
| 767 | International Law | 1 | 0 | 776 | 1085 |
| 767 | Music | 1 | 0 | 1959 | 2819 |
| 767 | Mental Health | 1 | 0 | 3509 | 5623 |
| 767 | health behavior | 1 | 0 | 2116 | 3680 |
| 767 | Simulation | 1 | 0 | 499 | 1013 |
| 767 | Tourism | 1 | 0 | 2833 | 4342 |
| 767 | reforestation | 1 | 0 | 354 | 723 |
| 767 | Artificial Organs | 1 | 0 | 1469 | 2276 |
| 767 | Liquid Crystals | 1 | 0 | 1664 | 2418 |
| 767 | Biofeedback | 1 | 0 | 282 | 729 |
| 767 | Politics | 1 | 0 | 1375 | 1822 |
| 767 | Lymphoma | 1 | 0 | 1534 | 1839 |
| 767 | Language and Education | 1 | 0 | 346 | 610 |
| 767 | Behavioral research | 1 | 0 | 1192 | 2493 |
| 767 | Multiple Myeloma | 1 | 0 | 1521 | 1815 |
| 767 | Animal ecology | 2 | 0 | 1671 | 3278 |
| 767 | Leukemia | 1 | 0 | 2340 | 3067 |
| 767 | Cardiovascular diseases | 1 | 0 | 3214 | 4738 |
| 767 | visualization | 2 | 0 | 2542 | 4301 |
| 767 | Communication in organizations | 1 | 0 | 136 | 229 |
| 767 | constitutional courts | 1 | 0 | 182 | 295 |
| 767 | machinery | 1 | 0 | 1562 | 2483 |
| 767 | theoretical models | 1 | 0 | 499 | 1013 |
| 767 | afforestation | 1 | 0 | 354 | 723 |
| 767 | Diet | 1 | 0 | 4311 | 6438 |
| 767 | behavior therapy | 1 | 0 | 1646 | 2724 |
| 767 | teachers | 1 | 0 | 35 | 58 |
| 767 | artificial cells | 1 | 0 | 243 | 457 |
| 767 | public schools | 1 | 0 | 3 | 2 |
| 767 | Pancreatic diseases | 1 | 0 | 1086 | 1390 |
