| 1 | Aquaculture | 1,051 | 53.7K | 1 | 1 |
| 2 | Marine Biology | 1,187 | 51.3K | 3 | 3 |
| 3 | Science | 380 | 45.6K | 719 | 506 |
| 4 | Oceanography | 1,120 | 45.4K | 6 | 6 |
| 5 | Ecology | 687 | 43.5K | 190 | 204 |
| 6 | Biology | 364 | 39.1K | 724 | 571 |
| 7 | Physics | 148 | 24.3K | 1595 | 887 |
| 8 | Geophysics | 484 | 24.0K | 199 | 144 |
| 9 | Pollution | 383 | 23.9K | 205 | 199 |
| 10 | Astronomy | 144 | 23.6K | 512 | 282 |
| 11 | Microbiology | 358 | 22.2K | 448 | 395 |
| 12 | Water pollution | 470 | 21.7K | 15 | 25 |
| 13 | Natural history | 52 | 18.7K | 759 | 574 |
| 14 | environmental pollution | 246 | 16.5K | 198 | 116 |
| 15 | Medicine | 256 | 16.2K | 1030 | 742 |
| 16 | Research | 236 | 15.9K | 837 | 490 |
| 17 | Geology | 293 | 15.6K | 206 | 140 |
| 18 | Microbial Ecology | 240 | 14.6K | 74 | 106 |
| 19 | Astrophysics | 28 | 14.2K | 1205 | 412 |
| 20 | Fishery resources | 431 | 14.0K | 1 | 1 |
| 21 | Environment | 230 | 13.4K | 338 | 419 |
| 22 | Fisheries | 370 | 13.0K | 13 | 9 |
| 23 | Environmental Health | 266 | 13.0K | 267 | 286 |
| 24 | Marine Pollution | 275 | 12.6K | 4 | 5 |
| 25 | Geochemistry | 199 | 11.8K | 145 | 117 |
| 26 | France | 331 | 10.7K | 1 | 1 |
| 27 | Meteorology | 138 | 10.6K | 210 | 150 |
| 28 | Planets | 208 | 10.3K | 131 | 118 |
| 29 | Biochemistry | 181 | 10.0K | 1385 | 1031 |
| 30 | Biodiversity | 208 | 9.6K | 38 | 70 |
| 31 | ecosystem | 195 | 8.9K | 4 | 23 |
| 32 | Molecular Biology | 208 | 8.7K | 972 | 1035 |
| 33 | Marine Ecology | 224 | 8.3K | 2 | 1 |
| 34 | Earth Sciences | 181 | 8.3K | 190 | 186 |
| 35 | Chemistry | 127 | 6.7K | 1844 | 1506 |
| 36 | Meteorites | 81 | 6.4K | 129 | 108 |
| 37 | Environmental monitoring | 107 | 6.4K | 335 | 251 |
| 38 | Water | 113 | 6.3K | 215 | 237 |
| 39 | Toxicology | 139 | 6.2K | 510 | 414 |
| 40 | Marine Meteorology | 113 | 6.1K | 24 | 21 |
| 41 | Biodiversity conservation | 120 | 5.7K | 113 | 243 |
| 42 | Continental shelf | 100 | 5.6K | 5 | 3 |
| 43 | Ocean Engineering | 188 | 5.3K | 55 | 64 |
| 44 | Biogeochemistry | 122 | 5.0K | 42 | 99 |
| 45 | Evolution | 82 | 5.0K | 236 | 248 |
| 46 | Environmental Microbiology | 99 | 4.9K | 38 | 85 |
| 47 | Composite Materials | 85 | 4.6K | 371 | 292 |
| 48 | Bacteriology | 59 | 4.6K | 313 | 235 |
| 49 | Geodynamics | 62 | 4.6K | 86 | 49 |
| 50 | biological evolution | 67 | 4.3K | 321 | 338 |
| 51 | Environmental pollutants | 70 | 4.0K | 189 | 102 |
| 52 | Climate change | 65 | 4.0K | 111 | 267 |
| 52 | Eutrophication | 65 | 4.0K | 109 | 265 |
| 54 | Algal blooms | 88 | 3.9K | 2 | 8 |
| 54 | Cyanobacteria | 88 | 3.9K | 2 | 8 |
| 54 | microalgae | 88 | 3.9K | 2 | 8 |
| 57 | pollutants | 63 | 3.8K | 174 | 91 |
| 58 | Chemical Oceanography | 63 | 3.7K | 14 | 15 |
| 59 | Marine Geology | 61 | 3.6K | 38 | 16 |
| 60 | Petroleum Geology | 57 | 3.5K | 41 | 23 |
| 61 | Environmental Management | 91 | 3.3K | 206 | 321 |
| 62 | Food Microbiology | 40 | 3.3K | 182 | 100 |
| 63 | Transport | 101 | 3.3K | 6 | 18 |
| 63 | Sea | 101 | 3.3K | 6 | 12 |
| 65 | Genetics | 80 | 3.2K | 628 | 831 |
| 66 | Environmental Engineering | 66 | 3.2K | 617 | 566 |
| 67 | Physiology | 73 | 3.2K | 775 | 677 |
| 68 | Biotechnology | 64 | 3.0K | 1413 | 1321 |
| 69 | Climatology | 77 | 2.9K | 229 | 264 |
| 70 | Biogeography | 68 | 2.9K | 63 | 139 |
| 71 | Zoology | 93 | 2.8K | 298 | 241 |
| 72 | Developmental Immunology | 46 | 2.8K | 46 | 18 |
| 73 | Molecular ecology | 70 | 2.7K | 114 | 206 |
| 74 | environmental indicators | 62 | 2.7K | 38 | 41 |
| 75 | Environmental Chemistry | 33 | 2.7K | 439 | 365 |
| 76 | Genomics | 61 | 2.6K | 547 | 492 |
| 77 | Algae | 100 | 2.5K | 24 | 53 |
| 78 | Environmental Policy | 58 | 2.4K | 502 | 579 |
| 79 | Molecular Genetics | 58 | 2.4K | 282 | 363 |
| 79 | Virology | 31 | 2.4K | 962 | 951 |
| 81 | environmental protection | 61 | 2.4K | 489 | 514 |
| 82 | Fishery management | 87 | 2.4K | 36 | 38 |
| 83 | sanitation | 32 | 2.3K | 403 | 410 |
| 84 | Comparative Physiology | 40 | 2.3K | 102 | 62 |
| 85 | Medical Laboratory Science | 10 | 2.3K | 1226 | 371 |
| 86 | Invertebrates | 55 | 2.2K | 29 | 16 |
| 87 | Population Genetics | 60 | 2.2K | 149 | 241 |
| 88 | Electronics | 4 | 2.1K | 3274 | 560 |
| 89 | Radio | 2 | 2.1K | 1871 | 302 |
| 90 | Aquatic ecology | 96 | 2.1K | 12 | 21 |
| 91 | Analytical Chemistry | 55 | 2.0K | 1162 | 990 |
| 92 | Cytology | 41 | 2.0K | 1240 | 1345 |
| 93 | Marine Geophysics | 51 | 1.9K | 11 | 2 |
| 94 | Chromosome mapping | 31 | 1.8K | 422 | 347 |
| 94 | gene mapping | 31 | 1.8K | 491 | 465 |
| 96 | Marine resources | 61 | 1.6K | 11 | 26 |
| 97 | Seaweed | 58 | 1.6K | 31 | 61 |
| 98 | Coastal zone management | 63 | 1.6K | 8 | 22 |
| 99 | Bioengineering | 33 | 1.6K | 1288 | 1320 |
| 100 | Scandinavia | 36 | 1.6K | 85 | 54 |
| 101 | Marine Biotechnology | 36 | 1.5K | 8 | 4 |
| 102 | Biophysics | 39 | 1.5K | 1826 | 1585 |
| 103 | Genetic engineering | 23 | 1.5K | 682 | 476 |
| 104 | Renewable Energy Sources | 23 | 1.5K | 784 | 842 |
| 105 | Manufacturing Processes | 24 | 1.5K | 745 | 386 |
| 106 | Molecular cloning | 22 | 1.5K | 385 | 191 |
| 106 | Genetic recombination | 22 | 1.5K | 371 | 188 |
| 106 | Recombinant DNA | 22 | 1.5K | 423 | 219 |
| 109 | Animal ecology | 33 | 1.5K | 277 | 241 |
| 110 | Parasitology | 54 | 1.4K | 425 | 424 |
| 111 | Toxins | 44 | 1.4K | 61 | 69 |
| 112 | venom | 39 | 1.4K | 65 | 63 |
| 113 | Cell Biology | 26 | 1.4K | 1511 | 1641 |
| 114 | Bacteria | 12 | 1.3K | 96 | 63 |
| 115 | Chemical Engineering | 17 | 1.3K | 2201 | 1503 |
| 115 | Endocrinology | 26 | 1.3K | 1039 | 973 |
| 115 | Environmental Toxicology | 44 | 1.3K | 389 | 579 |
| 118 | Botany | 45 | 1.3K | 1108 | 1213 |
| 119 | Sustainable Development | 21 | 1.3K | 518 | 367 |
| 120 | Microorganisms | 35 | 1.3K | 132 | 264 |
| 121 | food technology | 21 | 1.2K | 878 | 564 |
| 122 | shellfish | 33 | 1.2K | 8 | 5 |
| 123 | Nutrition | 12 | 1.2K | 2267 | 1228 |
| 124 | sustainability | 14 | 1.2K | 262 | 194 |
| 125 | Animal genetics | 24 | 1.2K | 151 | 102 |
| 126 | Wildlife conservation | 27 | 1.2K | 286 | 329 |
| 127 | Computational Biology | 35 | 1.2K | 667 | 738 |
| 128 | Biochemical Engineering | 12 | 1.2K | 1699 | 1464 |
| 129 | Food | 17 | 1.1K | 1307 | 830 |
| 130 | Geography | 31 | 1.1K | 625 | 506 |
| 131 | Sedimentology | 25 | 1.1K | 84 | 92 |
| 132 | Plant Ecology | 24 | 1.1K | 548 | 561 |
| 133 | Spain | 28 | 1.0K | 123 | 24 |
| 134 | Biogeochemical cycles | 28 | 1.0K | 79 | 195 |
| 135 | Atmospheric Physics | 18 | 1.0K | 627 | 516 |
| 136 | Conservation Biology | 36 | 1.0K | 172 | 298 |
| 137 | Pharmacology | 26 | 998 | 2057 | 1831 |
| 138 | Parasitic Diseases | 35 | 981 | 440 | 508 |
| 139 | environmental exposure | 31 | 979 | 345 | 411 |
| 140 | Marine biodiversity | 45 | 963 | 8 | 4 |
| 141 | Materials | 54 | 949 | 1768 | 2193 |
| 142 | Estuaries | 12 | 928 | 42 | 38 |
| 143 | Atmospheric Chemistry | 6 | 871 | 646 | 434 |
| 144 | Ichthyology | 30 | 845 | 40 | 17 |
| 144 | Fish | 30 | 845 | 20 | 15 |
| 146 | Geomagnetism | 25 | 808 | 182 | 152 |
| 147 | Hydrology | 26 | 795 | 809 | 784 |
| 148 | Protozoa | 16 | 787 | 95 | 104 |
| 149 | Biomass Energy | 11 | 785 | 1333 | 1009 |
| 150 | freshwater biology | 22 | 784 | 213 | 213 |
| 151 | atmospheric models | 16 | 782 | 247 | 256 |
| 152 | Economic Development | 8 | 779 | 964 | 525 |
| 153 | Water quality management | 28 | 765 | 445 | 391 |
| 154 | soil microbiology | 17 | 758 | 549 | 669 |
| 155 | Waste management | 26 | 756 | 299 | 227 |
| 155 | Water Purification | 26 | 756 | 226 | 185 |
| 157 | Sedimentary rocks | 16 | 742 | 162 | 124 |
| 158 | Engineering | 34 | 738 | 1311 | 1151 |
| 159 | Geobiology | 13 | 721 | 151 | 92 |
| 160 | Immunology | 4 | 715 | 3374 | 1720 |
| 161 | Medical Microbiology | 10 | 696 | 1270 | 1055 |
| 162 | Transplantation | 2 | 691 | 1261 | 480 |
| 163 | Cosmochemistry | 16 | 673 | 307 | 300 |
| 164 | Data Mining | 21 | 664 | 374 | 520 |
| 165 | Biodegradation | 16 | 661 | 115 | 117 |
| 166 | Pharmacognosy | 21 | 660 | 576 | 650 |
| 167 | Reproduction | 20 | 654 | 859 | 791 |
| 168 | Agricultural Chemistry | 17 | 652 | 921 | 834 |
| 169 | data collection | 20 | 648 | 189 | 365 |
| 170 | food contamination | 15 | 644 | 269 | 139 |
| 171 | Geomorphology | 23 | 642 | 407 | 543 |
| 172 | Water Microbiology | 16 | 635 | 53 | 56 |
| 173 | animals | 16 | 629 | 447 | 235 |
| 174 | cryosphere | 10 | 620 | 186 | 147 |
| 175 | Paleoclimatology | 27 | 613 | 297 | 426 |
| 176 | Technology | 18 | 611 | 1776 | 1384 |
| 177 | Mathematics | 31 | 592 | 2371 | 1763 |
| 178 | Agricultural Ecology | 15 | 577 | 396 | 496 |
| 178 | Fouling | 13 | 577 | 39 | 46 |
| 180 | Coral reef biology | 23 | 576 | 51 | 98 |
| 180 | Agriculture | 16 | 576 | 892 | 722 |
| 182 | Biomedical Engineering | 15 | 568 | 2532 | 2182 |
| 183 | biological invasions | 10 | 559 | 245 | 153 |
| 184 | Environmental Law | 12 | 551 | 424 | 618 |
| 184 | Animal Behavior | 31 | 551 | 519 | 876 |
| 186 | Ore deposits | 11 | 550 | 230 | 163 |
| 187 | Animal Physiology | 10 | 547 | 68 | 43 |
| 187 | Natural selection | 10 | 547 | 68 | 43 |
| 187 | genetic selection | 10 | 547 | 68 | 43 |
| 190 | Biocompatible Materials | 8 | 545 | 2435 | 2035 |
| 190 | Parasites | 25 | 545 | 416 | 492 |
| 192 | Molecular evolution | 22 | 542 | 452 | 677 |
| 193 | Diagnostic microbiology | 4 | 537 | 1123 | 780 |
| 194 | Extreme environments | 11 | 531 | 48 | 42 |
| 195 | polar regions | 19 | 521 | 187 | 187 |
| 196 | Paleoecology | 19 | 513 | 363 | 425 |
| 197 | Fluid Dynamics | 24 | 510 | 323 | 364 |
| 198 | Optical Communications | 2 | 500 | 1036 | 165 |
| 199 | Paleogeography | 17 | 493 | 344 | 398 |
| 200 | Developmental Biology | 14 | 489 | 896 | 1112 |
| 201 | Africa | 26 | 487 | 360 | 277 |
| 202 | Ethology | 27 | 483 | 441 | 820 |
| 203 | Hemostasis | 3 | 478 | 732 | 196 |
| 203 | Thrombosis | 3 | 478 | 1008 | 437 |
| 205 | chemical pollution | 1 | 475 | 9 | 2 |
| 206 | Mineralogy | 16 | 466 | 580 | 562 |
| 207 | Hydraulic Engineering | 27 | 463 | 300 | 389 |
| 208 | plankton | 21 | 459 | 14 | 26 |
| 209 | Electrochemistry | 11 | 453 | 2182 | 1635 |
| 210 | global environmental change | 14 | 448 | 265 | 439 |
| 211 | plant communities | 5 | 447 | 848 | 635 |
| 212 | Hydrodynamics | 2 | 440 | 696 | 237 |
| 213 | Diet | 3 | 439 | 2072 | 1165 |
| 214 | computer networks | 1 | 436 | 3610 | 1066 |
| 215 | viruses | 7 | 433 | 1002 | 883 |
| 216 | Industrial Microbiology | 13 | 416 | 848 | 1041 |
| 217 | Natural resources | 3 | 411 | 744 | 322 |
| 218 | Psychophysiology | 9 | 410 | 1579 | 1496 |
| 219 | Histology | 10 | 409 | 1043 | 926 |
| 220 | Neurophysiology | 9 | 406 | 1668 | 1560 |
| 220 | human behavior | 11 | 406 | 1187 | 1481 |
| 222 | Adhesion | 9 | 398 | 247 | 110 |
| 222 | adhesives | 9 | 398 | 265 | 111 |
| 224 | natural products | 12 | 390 | 855 | 640 |
| 225 | Surface Chemistry | 13 | 386 | 2019 | 1998 |
| 226 | sedimentary basins | 7 | 377 | 107 | 83 |
| 226 | Behavior | 9 | 377 | 1807 | 1839 |
| 228 | biological monitoring | 10 | 376 | 172 | 154 |
| 229 | Polymers | 20 | 369 | 2076 | 2209 |
| 230 | exobiology | 7 | 362 | 165 | 164 |
| 231 | Paleontology | 10 | 361 | 742 | 518 |
| 232 | Fluid Mechanics | 24 | 342 | 567 | 749 |
| 233 | Phylogeny | 11 | 338 | 376 | 538 |
| 234 | biofuels | 1 | 334 | 544 | 211 |
| 235 | Ecological Genetics | 17 | 327 | 144 | 155 |
| 236 | DNA | 12 | 319 | 178 | 171 |
| 237 | Proteomics | 12 | 310 | 473 | 683 |
| 238 | Host-parasite interactions | 6 | 307 | 833 | 1057 |
| 238 | Virulence | 6 | 307 | 775 | 971 |
| 238 | Immunity | 6 | 307 | 1346 | 1649 |
| 241 | Geochemical Modeling | 16 | 305 | 87 | 159 |
| 241 | geological modeling | 16 | 305 | 114 | 193 |
| 243 | Animal Nutrition | 7 | 300 | 349 | 235 |
| 243 | Colloids | 9 | 300 | 2273 | 2287 |
| 245 | Spectrum analysis | 13 | 299 | 2246 | 2302 |
| 246 | ethnobiology | 8 | 298 | 75 | 96 |
| 247 | Quality Control | 9 | 289 | 928 | 847 |
| 248 | food handling | 8 | 286 | 425 | 476 |
| 249 | polymerization | 15 | 277 | 1975 | 2098 |
| 250 | infection | 3 | 271 | 1719 | 1060 |
| 251 | Optics | 16 | 268 | 2494 | 2144 |
| 252 | Cell differentiation | 3 | 261 | 1682 | 1400 |
| 253 | actuators | 7 | 254 | 1484 | 1462 |
| 253 | transducers | 7 | 254 | 1484 | 1462 |
| 255 | Immunochemistry | 4 | 251 | 892 | 490 |
| 256 | Fracture mechanics | 3 | 249 | 1400 | 732 |
| 257 | Epidemiology | 3 | 247 | 3834 | 2268 |
| 258 | calcification | 4 | 246 | 443 | 313 |
| 259 | Medicinal plants | 8 | 238 | 831 | 986 |
| 260 | Electrophoresis | 6 | 234 | 1210 | 993 |
| 261 | Energy Policy | 3 | 229 | 2604 | 2137 |
| 262 | Embryology | 4 | 226 | 1291 | 1206 |
| 263 | Electromagnetic waves | 5 | 225 | 205 | 70 |
| 264 | body temperature | 9 | 224 | 167 | 176 |
| 265 | Ecosystem management | 11 | 222 | 274 | 426 |
| 266 | disease vectors | 10 | 214 | 484 | 630 |
| 267 | Asia | 7 | 212 | 1901 | 1204 |
| 268 | Molecular Microbiology | 4 | 210 | 740 | 817 |
| 269 | Bioremediation | 5 | 209 | 571 | 508 |
| 270 | Petrology | 13 | 207 | 484 | 674 |
| 271 | Europe | 6 | 206 | 2307 | 1702 |
| 272 | Japan | 10 | 205 | 1066 | 884 |
| 273 | human development | 3 | 204 | 775 | 532 |
| 274 | proteins | 2 | 203 | 2521 | 1433 |
| 275 | Membranes | 4 | 202 | 1494 | 1403 |
| 276 | Nanotechnology | 8 | 199 | 3229 | 3582 |
| 277 | Biosensors | 4 | 198 | 1139 | 1268 |
| 277 | Bioelectronics | 4 | 198 | 971 | 1153 |
| 279 | Surface-Active Agents | 4 | 197 | 971 | 868 |
| 279 | Surface properties | 4 | 197 | 1036 | 950 |
| 279 | Genetic markers | 6 | 197 | 100 | 84 |
| 279 | biochemical markers | 6 | 197 | 547 | 396 |
| 283 | genome | 4 | 194 | 1391 | 1486 |
| 284 | Chromosomes | 4 | 193 | 871 | 752 |
| 285 | Gene expression regulation | 2 | 192 | 1246 | 757 |
| 285 | DNA methylation | 2 | 192 | 366 | 223 |
| 287 | Mechanical Engineering | 18 | 191 | 1044 | 1208 |
| 288 | energy resources | 2 | 190 | 1608 | 1362 |
| 289 | natural disasters | 5 | 184 | 1025 | 900 |
| 290 | Microbial Biotechnology | 3 | 181 | 1043 | 634 |
| 291 | Palynology | 14 | 180 | 42 | 77 |
| 292 | Engineering Mathematics | 6 | 178 | 1933 | 1221 |
| 293 | Neurology | 6 | 173 | 3863 | 4114 |
| 293 | emergency management | 4 | 173 | 710 | 508 |
| 293 | Hormones | 5 | 173 | 1018 | 1034 |
| 296 | mammals | 4 | 170 | 914 | 611 |
| 297 | Planetary Science | 11 | 167 | 249 | 276 |
| 298 | Food additives | 4 | 159 | 1017 | 1015 |
| 299 | plant molecular biology | 4 | 158 | 1265 | 1501 |
| 300 | Proteome | 1 | 157 | 1847 | 1106 |
| 300 | enzymes | 1 | 157 | 2339 | 1263 |
| 302 | Systems Biology | 8 | 154 | 909 | 1194 |
| 303 | Marine invertebrates | 6 | 152 | 120 | 67 |
| 303 | biological factors | 3 | 152 | 2018 | 1468 |
| 305 | Cancer | 2 | 149 | 4187 | 3177 |
| 306 | Genetic Toxicology | 3 | 147 | 483 | 477 |
| 307 | Anatomy | 5 | 146 | 1505 | 1486 |
| 307 | Medical genetics | 2 | 146 | 3051 | 2660 |
| 309 | Economics | 6 | 145 | 3079 | 2493 |
| 309 | Human genetics | 2 | 145 | 2487 | 3078 |
| 309 | Antarctica | 16 | 145 | 144 | 262 |
| 309 | Plants | 4 | 145 | 1897 | 1753 |
| 313 | embryonic development | 3 | 143 | 405 | 320 |
| 314 | Nanostructured Materials | 6 | 136 | 2313 | 2530 |
| 314 | Plant breeding | 8 | 136 | 458 | 647 |
| 314 | disease outbreaks | 2 | 136 | 676 | 529 |
| 314 | Epidemics | 2 | 136 | 654 | 526 |
| 314 | eugenics | 8 | 136 | 252 | 402 |
| 314 | Breeding | 8 | 136 | 710 | 1003 |
| 320 | Analytical Biochemistry | 3 | 135 | 1859 | 1389 |
| 320 | Infections | 1 | 135 | 1869 | 1202 |
| 322 | Cardiovascular diseases | 1 | 134 | 2540 | 1239 |
| 322 | nucleic acids | 6 | 134 | 1281 | 1776 |
| 324 | Organic Geochemistry | 5 | 132 | 272 | 397 |
| 325 | Mass Spectrometry | 9 | 130 | 677 | 919 |
| 326 | Organometallic chemistry | 4 | 129 | 1726 | 1315 |
| 327 | Oncogenes | 3 | 128 | 1136 | 1435 |
| 327 | Organometallic compounds | 3 | 128 | 1271 | 953 |
| 329 | Plant physiology | 3 | 127 | 2013 | 1963 |
| 329 | Marine mineral resources | 4 | 127 | 122 | 53 |
| 329 | Mechanics | 9 | 127 | 720 | 769 |
| 329 | Seabed | 4 | 127 | 122 | 53 |
| 333 | China | 7 | 123 | 2001 | 2229 |
| 334 | Robotics | 5 | 120 | 1400 | 1377 |
| 334 | Pharmaceutical Chemistry | 4 | 120 | 3539 | 3471 |
| 334 | Plastics | 2 | 120 | 2073 | 1259 |
| 337 | Artificial Intelligence | 4 | 119 | 3354 | 2983 |
| 337 | Ornithology | 8 | 119 | 596 | 632 |
| 339 | Catalysis | 4 | 118 | 2909 | 2992 |
| 340 | Bioacoustics | 2 | 117 | 129 | 43 |
| 340 | Landslides | 3 | 117 | 244 | 313 |
| 340 | coal | 2 | 117 | 1910 | 1691 |
| 343 | Metals | 14 | 116 | 991 | 1769 |
| 343 | Marine algae | 6 | 116 | 60 | 69 |
| 345 | Thin Films | 6 | 113 | 341 | 322 |
| 346 | Metallurgy | 14 | 112 | 1103 | 1836 |
| 347 | Oxidative stress | 2 | 111 | 1512 | 1432 |
| 347 | Land use | 6 | 111 | 764 | 1084 |
| 347 | Cell survival | 2 | 111 | 278 | 221 |
| 347 | probabilities | 2 | 111 | 1481 | 728 |
| 347 | molecular chaperones | 2 | 111 | 314 | 223 |
| 352 | Hydrogeology | 6 | 110 | 531 | 620 |
| 352 | Solid State Chemistry | 5 | 110 | 1989 | 1914 |
| 352 | drug toxicity | 4 | 110 | 323 | 404 |
| 355 | Environmental risk assessment | 8 | 108 | 158 | 325 |
| 356 | Materials Science | 6 | 106 | 3485 | 3865 |
| 356 | Latin America | 13 | 106 | 628 | 572 |
| 358 | Foraminifera | 4 | 105 | 56 | 63 |
| 358 | cell physiology | 1 | 105 | 2250 | 1749 |
| 358 | Birds | 7 | 105 | 809 | 809 |
| 361 | Telecommunication | 2 | 104 | 3172 | 2158 |
| 362 | Soil Mechanics | 4 | 103 | 1017 | 1042 |
| 363 | Climate Change Mitigation | 1 | 102 | 96 | 121 |
| 363 | Metallic Glasses | 2 | 102 | 570 | 408 |
| 363 | Global warming | 1 | 102 | 310 | 132 |
| 363 | sea level | 1 | 102 | 96 | 121 |
| 367 | Plant diseases | 3 | 101 | 1935 | 1622 |
| 368 | Tropical Medicine | 7 | 98 | 1239 | 1551 |
| 369 | Ecological Engineering | 3 | 97 | 667 | 823 |
| 370 | Control Theory | 4 | 96 | 1554 | 1360 |
| 370 | Animal breeding | 4 | 96 | 659 | 671 |
| 372 | Engineering Geology | 8 | 95 | 877 | 1376 |
| 373 | Psychology | 3 | 94 | 4827 | 4179 |
| 373 | Chemical analysis | 3 | 94 | 1219 | 1154 |
| 373 | United Kingdom | 2 | 94 | 1899 | 1620 |
| 376 | Optical materials | 2 | 93 | 2819 | 2561 |
| 376 | optical devices | 2 | 93 | 656 | 373 |
| 378 | Numerical Analysis | 4 | 92 | 2085 | 1709 |
| 378 | Lipids | 3 | 92 | 1341 | 1519 |
| 380 | Naval Architecture | 7 | 91 | 174 | 215 |
| 381 | Plant cells | 2 | 90 | 1224 | 1542 |
| 382 | Freeze-Drying | 5 | 89 | 236 | 331 |
| 382 | Hypothermia | 5 | 89 | 236 | 331 |
| 382 | Freeze Drying | 5 | 89 | 236 | 331 |
| 385 | Geotechnical Engineering | 3 | 88 | 709 | 638 |
| 385 | Structural dynamics | 4 | 88 | 911 | 1148 |
| 385 | Phytotherapy | 8 | 88 | 415 | 916 |
| 388 | Anthropology | 8 | 87 | 945 | 1156 |
| 388 | Epigenetics | 3 | 87 | 216 | 165 |
| 388 | Cytogenetics | 4 | 87 | 1349 | 1855 |
| 388 | Ethnobotany | 7 | 87 | 64 | 266 |
| 388 | Medical Anthropology | 7 | 87 | 758 | 1568 |
| 388 | Epigenomics | 3 | 87 | 213 | 162 |
| 388 | Traditional medicine | 7 | 87 | 104 | 304 |
| 388 | Population | 2 | 87 | 1271 | 989 |
| 388 | Ethnomedicine | 7 | 87 | 47 | 262 |
| 397 | phase diagrams | 3 | 86 | 165 | 112 |
| 397 | Chromatographic analysis | 7 | 86 | 1282 | 1672 |
| 399 | Soil ecology | 1 | 85 | 1228 | 937 |
| 400 | Clinical Chemistry | 4 | 84 | 2657 | 3146 |
| 400 | Product life cycle | 3 | 84 | 299 | 404 |
| 400 | green products | 3 | 84 | 268 | 396 |
| 403 | Remote Sensing | 14 | 83 | 589 | 1098 |
| 403 | Genes | 4 | 83 | 1017 | 1199 |
| 405 | Ecophysiology | 3 | 82 | 228 | 223 |
| 405 | Image Processing | 3 | 82 | 2238 | 2218 |
| 405 | mathematical concepts | 3 | 82 | 408 | 268 |
| 408 | Oncology | 1 | 81 | 3661 | 3097 |
| 408 | Electron Microscopy | 6 | 81 | 250 | 347 |
| 410 | symbiosis | 3 | 80 | 98 | 110 |
| 411 | Medical Oncology | 1 | 79 | 2655 | 2080 |
| 411 | Metastasis | 1 | 79 | 369 | 419 |
| 413 | Bioinformatics | 5 | 78 | 1743 | 2258 |
| 413 | heredity | 5 | 78 | 493 | 646 |
| 413 | Australia | 6 | 78 | 1314 | 1647 |
| 413 | Liquid chromatography | 5 | 78 | 356 | 284 |
| 417 | Chemical Ecology | 1 | 77 | 861 | 666 |
| 417 | pheromones | 1 | 77 | 801 | 640 |
| 419 | Molecular structure | 4 | 76 | 2209 | 2350 |
| 420 | Automation | 2 | 75 | 2575 | 2275 |
| 421 | Functional Genomics | 1 | 72 | 508 | 461 |
| 421 | Paleoceanography | 3 | 72 | 187 | 309 |
| 423 | Steroids | 1 | 70 | 1572 | 1097 |
| 424 | Genetic regulation | 1 | 69 | 1840 | 1534 |
| 424 | Stem cells | 1 | 69 | 2341 | 1942 |
| 424 | cloning | 1 | 69 | 1088 | 1077 |
| 427 | Ocean-atmosphere interaction | 7 | 66 | 54 | 46 |
| 428 | System analysis | 7 | 65 | 1732 | 2473 |
| 429 | Photonics | 1 | 64 | 2705 | 2112 |
| 430 | Production Engineering | 2 | 63 | 2367 | 1849 |
| 430 | Plasma chemistry | 1 | 63 | 715 | 441 |
| 430 | Plasma polymerization | 1 | 63 | 484 | 294 |
| 430 | Microbiota | 5 | 63 | 17 | 53 |
| 434 | Mycology | 1 | 62 | 2419 | 1782 |
| 435 | Statistics | 4 | 61 | 2301 | 2221 |
| 436 | Water chemistry | 3 | 56 | 293 | 381 |
| 437 | Pharmacy | 1 | 55 | 3316 | 2608 |
| 438 | Pesticide residues | 1 | 54 | 160 | 156 |
| 439 | Physical Geography | 2 | 53 | 732 | 634 |
| 439 | Nuclear Chemistry | 3 | 53 | 1157 | 965 |
| 439 | Radiochemistry | 3 | 53 | 1084 | 883 |
| 439 | Agricultural systems | 1 | 53 | 562 | 592 |
| 439 | Forest genetics | 2 | 53 | 431 | 347 |
| 444 | Ethnology | 5 | 52 | 1162 | 1344 |
| 445 | Rock deformation | 2 | 51 | 272 | 321 |
| 445 | water resources | 24 | 51 | 44 | 377 |
| 445 | Pesticides | 2 | 51 | 850 | 795 |
| 445 | Insect biochemistry | 4 | 51 | 361 | 662 |
| 449 | Solar Energy | 1 | 50 | 2562 | 2360 |
| 449 | Tourism | 2 | 50 | 1885 | 2005 |
| 449 | Simulation Methods | 1 | 50 | 1745 | 1113 |
| 449 | Biomass | 2 | 50 | 809 | 1173 |
| 453 | aquatic organisms | 1 | 49 | 12 | 23 |
| 453 | drug development | 1 | 49 | 1888 | 1972 |
| 453 | drugs | 1 | 49 | 3517 | 2805 |
| 456 | Computational Fluid Dynamics | 1 | 48 | 1111 | 785 |
| 456 | Petroleum | 3 | 48 | 323 | 286 |
| 456 | natural gas | 3 | 48 | 426 | 601 |
| 459 | Soil biology | 2 | 47 | 1066 | 1423 |
| 459 | Sound | 2 | 47 | 1291 | 1131 |
| 461 | mutation | 1 | 46 | 1020 | 1003 |
| 461 | Nanostructures | 1 | 46 | 3342 | 2789 |
| 461 | Biofilms | 1 | 46 | 302 | 358 |
| 461 | protein | 1 | 46 | 1947 | 1575 |
| 461 | Microscopy | 4 | 46 | 1445 | 1668 |
| 466 | Insects | 4 | 45 | 1328 | 1578 |
| 467 | United States | 4 | 44 | 4899 | 5992 |
| 468 | poverty | 4 | 43 | 280 | 623 |
| 468 | healthcare disparities | 4 | 43 | 355 | 699 |
| 468 | Socioeconomic Factors | 4 | 43 | 616 | 1214 |
| 468 | Marine mammals | 2 | 43 | 338 | 371 |
| 472 | Evolutionary Genetics | 1 | 42 | 1324 | 1122 |
| 472 | Molecular Epidemiology | 1 | 42 | 1324 | 1122 |
| 472 | Entomology | 6 | 42 | 1740 | 2393 |
| 472 | Mollusks | 4 | 42 | 182 | 202 |
| 476 | Petroleum Engineering | 1 | 41 | 1287 | 1009 |
| 477 | Photogrammetry | 9 | 40 | 395 | 553 |
| 478 | toxicity testing | 2 | 39 | 992 | 1266 |
| 479 | Neuropsychology | 1 | 38 | 3304 | 2974 |
| 479 | Freshwater Ecology | 4 | 38 | 199 | 292 |
| 479 | Earthquakes | 3 | 38 | 409 | 491 |
| 479 | Aquatic animals | 5 | 38 | 107 | 284 |
| 479 | Social behavior | 2 | 38 | 1404 | 1609 |
| 479 | nanoscience | 2 | 38 | 3269 | 3689 |
| 485 | Environmental Geology | 4 | 37 | 1487 | 2293 |
| 485 | Physical Chemistry | 2 | 37 | 2661 | 2810 |
| 485 | Diagnostic Imaging | 1 | 37 | 3351 | 2685 |
| 485 | Flow cytometry | 1 | 37 | 757 | 718 |
| 489 | Neurochemistry | 3 | 36 | 2233 | 3183 |
| 489 | carbon monoxide | 1 | 36 | 643 | 779 |
| 491 | Bioenergetics | 2 | 35 | 1016 | 1396 |
| 491 | Food preferences | 3 | 35 | 368 | 702 |
| 491 | environmental issues | 6 | 35 | 230 | 844 |
| 494 | Seismology | 4 | 34 | 438 | 661 |
| 494 | structural stability | 1 | 34 | 787 | 710 |
| 496 | Nondestructive testing | 3 | 33 | 712 | 923 |
| 496 | fishing industry | 3 | 33 | 117 | 204 |
| 498 | Greenhouse gases | 1 | 32 | 626 | 750 |
| 498 | Ecohydrology | 2 | 32 | 494 | 603 |
| 498 | Ultrasonics | 3 | 32 | 1233 | 2059 |
| 498 | glycoproteins | 1 | 32 | 812 | 873 |
| 498 | Glycoconjugates | 1 | 32 | 812 | 873 |
| 498 | Groundwater | 4 | 32 | 602 | 1028 |
| 498 | Oligosaccharide | 1 | 32 | 569 | 663 |
| 498 | Carbohydrates | 1 | 32 | 788 | 820 |
| 498 | glycolipids | 1 | 32 | 812 | 873 |
| 507 | Civil Engineering | 11 | 31 | 971 | 1940 |
| 507 | Process Control | 2 | 31 | 1085 | 1635 |
| 507 | feeding behavior | 1 | 31 | 1122 | 1278 |
| 507 | Learning | 2 | 31 | 1541 | 1816 |
| 507 | Fungi | 1 | 31 | 1585 | 1592 |
| 507 | Appetite | 1 | 31 | 996 | 1153 |
| 513 | soil conservation | 2 | 30 | 1025 | 1364 |
| 513 | Biometrics | 1 | 30 | 1595 | 1404 |
| 513 | Alzheimer's disease | 1 | 30 | 2308 | 1642 |
| 516 | Mutagenesis | 1 | 29 | 935 | 862 |
| 516 | mutagens | 1 | 29 | 1336 | 1592 |
| 516 | amino acids | 1 | 29 | 1080 | 1153 |
| 519 | Multiphase Flow | 1 | 28 | 631 | 713 |
| 519 | free radicals | 2 | 28 | 1592 | 2491 |
| 521 | Energy Conversion | 1 | 27 | 1798 | 1974 |
| 521 | Energy Storage | 1 | 27 | 1923 | 1828 |
| 521 | Behavioral Genetics | 1 | 27 | 397 | 482 |
| 521 | Radiation Protection | 7 | 27 | 347 | 719 |
| 521 | dietary supplements | 2 | 27 | 1060 | 1589 |
| 521 | fuel cells | 1 | 27 | 1843 | 1908 |
| 521 | hydrocolloids | 2 | 27 | 732 | 1298 |
| 528 | Restoration Ecology | 4 | 26 | 353 | 825 |
| 528 | Sonochemistry | 1 | 26 | 1051 | 1426 |
| 528 | Mitochondrial DNA | 1 | 26 | 465 | 201 |
| 528 | atmosphere | 3 | 26 | 796 | 1383 |
| 528 | Microwaves | 1 | 26 | 2075 | 1736 |
| 528 | South America | 1 | 26 | 233 | 103 |
| 528 | Autonomous robots | 1 | 26 | 353 | 442 |
| 528 | Cognition | 1 | 26 | 2339 | 2332 |
| 536 | Public Health | 6 | 25 | 4310 | 8323 |
| 536 | Veterinary Epidemiology | 1 | 25 | 104 | 134 |
| 536 | Visual Perception | 3 | 25 | 1620 | 2599 |
| 536 | Memory | 3 | 25 | 1747 | 2878 |
| 536 | Attention | 3 | 25 | 1679 | 2743 |
| 536 | Perception | 3 | 25 | 1772 | 2825 |
| 542 | Serology | 2 | 24 | 700 | 1015 |
| 542 | Genetic variation | 1 | 24 | 279 | 308 |
| 542 | Probiotics | 1 | 24 | 386 | 478 |
| 545 | Radiation | 3 | 23 | 2216 | 3038 |
| 545 | land degradation | 1 | 23 | 948 | 1094 |
| 545 | degradation | 1 | 23 | 948 | 1094 |
| 548 | Archaeology | 6 | 22 | 958 | 1657 |
| 548 | Radioisotopes | 3 | 22 | 1198 | 1649 |
| 548 | carcinogens | 1 | 22 | 1675 | 2002 |
| 551 | Stochastic Processes | 1 | 21 | 1501 | 1339 |
| 551 | Geodesy | 1 | 21 | 1342 | 1321 |
| 551 | Drug design | 1 | 21 | 2885 | 3014 |
| 551 | Health | 1 | 21 | 3647 | 3793 |
| 551 | Chromatography | 3 | 21 | 1756 | 2695 |
| 551 | Middle East | 2 | 21 | 1281 | 1306 |
| 551 | Information Science | 2 | 21 | 2994 | 3775 |
| 558 | Photography | 5 | 20 | 2089 | 1628 |
| 558 | Environmental Economics | 2 | 20 | 552 | 830 |
| 558 | elasticity | 1 | 20 | 376 | 362 |
| 558 | Maps | 2 | 20 | 222 | 317 |
| 558 | Developing countries | 2 | 20 | 2910 | 3783 |
| 558 | sexual behavior | 1 | 20 | 1117 | 1222 |
| 564 | Neural circuitry | 1 | 19 | 2843 | 3214 |
| 564 | Scotland | 1 | 19 | 248 | 182 |
| 566 | Plant Genetics | 1 | 18 | 1099 | 1387 |
| 566 | Phytochemistry | 1 | 18 | 653 | 787 |
| 566 | Geographic information systems | 2 | 18 | 1443 | 1799 |
| 566 | Neuroanatomy | 1 | 18 | 491 | 591 |
| 566 | Plant genetic engineering | 1 | 18 | 1498 | 1734 |
| 566 | Phytoremediation | 1 | 18 | 653 | 787 |
| 566 | environmental remediation | 1 | 18 | 784 | 905 |
| 566 | Bioreactors | 1 | 18 | 653 | 787 |
| 574 | Education | 1 | 17 | 5673 | 4713 |
| 574 | Computer Graphics | 2 | 17 | 2042 | 2725 |
| 574 | Computer Vision | 2 | 17 | 1384 | 2065 |
| 574 | Career development | 1 | 17 | 772 | 754 |
| 574 | Reservoirs | 1 | 17 | 367 | 394 |
| 574 | Vocational guidance | 1 | 17 | 1326 | 1473 |
| 574 | lakes | 1 | 17 | 176 | 195 |
| 574 | Great Lakes | 1 | 17 | 393 | 503 |
| 582 | Game Theory | 1 | 16 | 931 | 900 |
| 582 | Metabolism | 1 | 16 | 4055 | 5047 |
| 582 | Endocrine glands | 1 | 16 | 463 | 748 |
| 585 | Ichnology | 1 | 15 | 156 | 201 |
| 585 | Ceramics | 11 | 15 | 775 | 2347 |
| 585 | Systems Analysis | 2 | 15 | 1378 | 2046 |
| 585 | Industrial Safety | 1 | 15 | 2007 | 2130 |
| 585 | Trace fossils | 1 | 15 | 156 | 201 |
| 585 | occupational diseases | 1 | 15 | 1535 | 2056 |
| 585 | Plant tissue culture | 1 | 15 | 1190 | 1466 |
| 585 | Volcanoes | 3 | 15 | 268 | 585 |
| 585 | marketing | 1 | 15 | 2664 | 2829 |
| 585 | Sites | 1 | 15 | 872 | 1208 |
| 585 | Plant cell culture | 1 | 15 | 1096 | 1446 |
| 596 | Geothermal Energy | 1 | 14 | 503 | 668 |
| 596 | Combinatorial chemistry | 1 | 14 | 1548 | 1936 |
| 596 | Diplomatic relations | 1 | 14 | 1215 | 768 |
| 596 | Paleobotany | 1 | 14 | 317 | 438 |
| 596 | Vegetation dynamics | 1 | 14 | 297 | 421 |
| 596 | miniaturization | 1 | 14 | 2709 | 3333 |
| 596 | silicon | 1 | 14 | 723 | 760 |
| 603 | behavioral medicine | 3 | 13 | 1290 | 2945 |
| 603 | environmental control | 1 | 13 | 477 | 646 |
| 603 | wood | 1 | 13 | 827 | 915 |
| 606 | Marine Engineering | 3 | 12 | 273 | 458 |
| 606 | Forest Ecology | 2 | 12 | 1232 | 2074 |
| 606 | Social Change | 1 | 12 | 1628 | 2214 |
| 606 | supercritical fluids | 1 | 12 | 677 | 1004 |
| 606 | Nervous system | 1 | 12 | 3576 | 4479 |
| 606 | chromatin | 1 | 12 | 295 | 536 |
| 606 | Animal | 1 | 12 | 361 | 515 |
| 613 | Information Systems | 1 | 11 | 2465 | 2985 |
| 613 | Solid State Physics | 1 | 11 | 4507 | 4875 |
| 613 | Paleopathology | 3 | 11 | 317 | 589 |
| 616 | Economic History | 1 | 10 | 5113 | 4842 |
| 616 | economic policy | 2 | 10 | 2905 | 3538 |
| 616 | Positive Psychology | 1 | 10 | 320 | 553 |
| 616 | particles | 1 | 10 | 1724 | 2165 |
| 616 | economic analysis | 1 | 10 | 462 | 644 |
| 621 | Systems Engineering | 1 | 9 | 3388 | 3704 |
| 621 | Morphology | 1 | 9 | 1358 | 1483 |
| 621 | Forecasting | 1 | 9 | 987 | 1192 |
| 621 | mass transfer | 1 | 9 | 2317 | 2865 |
| 621 | Social policy | 1 | 9 | 1710 | 1976 |
| 621 | Forest Management | 1 | 9 | 1544 | 2044 |
| 621 | wind erosion | 1 | 9 | 226 | 418 |
| 621 | DNS | 1 | 9 | 992 | 1437 |
| 629 | Bryology | 1 | 8 | 377 | 425 |
| 629 | Landscape Ecology | 1 | 8 | 776 | 1229 |
| 629 | Aerodynamics | 3 | 8 | 109 | 168 |
| 629 | Algorithms | 1 | 8 | 1214 | 1382 |
| 629 | X-ray spectroscopy | 1 | 8 | 445 | 574 |
| 629 | Environmental Geochemistry | 1 | 8 | 1067 | 1583 |
| 629 | Taste | 1 | 8 | 582 | 880 |
| 629 | Erosion | 1 | 8 | 215 | 492 |
| 629 | smell | 1 | 8 | 582 | 880 |
| 629 | bryophytes | 1 | 8 | 221 | 254 |
| 629 | biomedicine | 1 | 8 | 1750 | 2425 |
| 640 | Electrical Engineering | 2 | 7 | 4223 | 5032 |
| 640 | Space telescopes | 3 | 7 | 211 | 407 |
| 640 | Biotelemetry | 1 | 7 | 166 | 271 |
| 640 | soil pollution | 1 | 7 | 1104 | 1553 |
| 640 | Wildlife management | 3 | 7 | 605 | 1302 |
| 640 | Aquatic ecosystems | 2 | 7 | 216 | 510 |
| 640 | Wind power | 3 | 7 | 310 | 807 |
| 647 | Dermatology | 1 | 6 | 2482 | 3170 |
| 647 | Food Safety | 1 | 6 | 511 | 899 |
| 647 | Forensic Genetics | 1 | 6 | 413 | 664 |
| 647 | Underwater Archaeology | 1 | 6 | 228 | 251 |
| 647 | Acoustics | 2 | 6 | 470 | 669 |
| 647 | Paleobiology | 1 | 6 | 643 | 839 |
| 647 | Acoustic holography | 2 | 6 | 114 | 104 |
| 647 | Environmental hydraulics | 1 | 6 | 42 | 105 |
| 647 | Laser therapy | 1 | 6 | 850 | 1105 |
| 647 | Paleobiogeography | 1 | 6 | 161 | 269 |
| 647 | Holography | 2 | 6 | 114 | 104 |
| 647 | Acoustic imaging | 2 | 6 | 114 | 104 |
| 647 | Celestial Mechanics | 1 | 6 | 323 | 419 |
| 647 | Ultrasonic Imaging | 2 | 6 | 644 | 1344 |
| 647 | chemical spills | 1 | 6 | 26 | 67 |
| 647 | coastal areas | 1 | 6 | 159 | 226 |
| 647 | Safety management | 1 | 6 | 1180 | 1689 |
| 647 | coastal archaeology | 1 | 6 | 159 | 226 |
| 647 | islands | 1 | 6 | 159 | 226 |
| 647 | biological agents | 1 | 6 | 1234 | 1228 |
| 667 | Human Geography | 1 | 5 | 1715 | 2226 |
| 667 | Differential Equations | 1 | 5 | 1486 | 1656 |
| 667 | energy conservation | 1 | 5 | 3137 | 4363 |
| 667 | Feminism | 1 | 5 | 1009 | 1208 |
| 667 | oceans | 1 | 5 | 29 | 45 |
| 667 | ocean temperature | 1 | 5 | 30 | 46 |
| 667 | Detectors | 1 | 5 | 2628 | 3440 |
| 674 | Soil Science | 1 | 4 | 2746 | 3611 |
| 674 | Sports Medicine | 1 | 4 | 3624 | 4317 |
| 674 | Signal Processing | 1 | 4 | 3531 | 4623 |
| 674 | Travel | 1 | 4 | 1504 | 2283 |
| 674 | Soft Condensed Matter | 1 | 4 | 1643 | 2243 |
| 674 | Finite Element Method | 2 | 4 | 357 | 856 |
| 674 | Oxidation | 1 | 4 | 306 | 523 |
| 674 | Minerals | 1 | 4 | 1381 | 2094 |
| 682 | Health Policy | 1 | 3 | 3854 | 5548 |
| 682 | Plant Taxonomy | 1 | 3 | 697 | 966 |
| 682 | Regional Planning | 2 | 3 | 1819 | 3147 |
| 682 | preventive medicine | 1 | 3 | 2074 | 3262 |
| 682 | radiative transfer | 1 | 3 | 891 | 1251 |
| 682 | Respiratory Infections | 1 | 3 | 678 | 1128 |
| 682 | Urban Areas | 2 | 3 | 301 | 762 |
| 682 | Chemical industry | 1 | 3 | 2211 | 2895 |
| 682 | city planning | 2 | 3 | 1951 | 3481 |
| 682 | energy development | 1 | 3 | 1676 | 2595 |
| 682 | winds | 1 | 3 | 269 | 450 |
| 682 | Influenza | 1 | 3 | 539 | 956 |
| 694 | Animal health | 1 | 2 | 769 | 1164 |
| 694 | Quantum Optics | 1 | 2 | 1346 | 1822 |
| 694 | Radio wave propagation | 1 | 2 | 1406 | 2001 |
| 694 | Welding | 4 | 2 | 243 | 868 |
| 694 | water supply | 1 | 2 | 1479 | 2275 |
| 694 | Atomic spectroscopy | 1 | 2 | 1743 | 2358 |
| 694 | Laser Spectroscopy | 1 | 2 | 1302 | 1774 |
| 694 | Testing | 2 | 2 | 149 | 454 |
| 694 | mathematical analysis | 2 | 2 | 2620 | 3556 |
| 694 | Isotopes | 1 | 2 | 272 | 612 |
| 704 | Social Sciences | 2 | 1 | 4433 | 7226 |
| 704 | Social Choice Theory | 1 | 1 | 410 | 627 |
| 704 | Welfare Economics | 1 | 1 | 685 | 1007 |
| 704 | Physical organic chemistry | 1 | 1 | 2026 | 2873 |
| 704 | diffusion | 1 | 1 | 670 | 820 |
| 704 | Herbal medicine | 1 | 1 | 1311 | 2273 |
| 704 | Bioorganic chemistry | 1 | 1 | 3783 | 5005 |
| 704 | Moon | 1 | 1 | 329 | 525 |
| 704 | Soviet Union | 2 | 1 | 980 | 1948 |
| 704 | hygiene | 1 | 1 | 999 | 1771 |
| 704 | Nonlinear mechanics | 1 | 1 | 758 | 1186 |
| 715 | Literature | 1 | 0 | 1444 | 1427 |
| 715 | International Relations | 1 | 0 | 1858 | 2527 |
| 715 | Telecommunication Systems | 1 | 0 | 2465 | 3435 |
| 715 | Rheology | 1 | 0 | 897 | 1520 |
| 715 | radiocarbon dating | 1 | 0 | 181 | 382 |
| 715 | Calculus of Variations | 1 | 0 | 761 | 1080 |
| 715 | civilization | 1 | 0 | 2021 | 2399 |
| 715 | Fish diseases | 1 | 0 | 217 | 489 |
| 715 | Eurasia | 1 | 0 | 449 | 825 |
| 715 | Archaea | 1 | 0 | 80 | 267 |
| 715 | California | 1 | 0 | 697 | 1159 |
| 715 | economic development projects | 1 | 0 | 390 | 939 |
| 715 | extraterrestrial environment | 1 | 0 | 1063 | 1714 |
| 715 | astronomical phenomena | 1 | 0 | 998 | 1590 |
