| 1 | Chemistry | 679 | 27.4K | 640 | 722 |
| 2 | Physics | 923 | 23.7K | 510 | 1195 |
| 3 | Electrochemistry | 614 | 11.8K | 87 | 161 |
| 4 | Materials | 539 | 11.6K | 359 | 627 |
| 5 | Surface Chemistry | 305 | 11.3K | 177 | 180 |
| 6 | Ecology | 219 | 11.3K | 699 | 730 |
| 7 | Colloids | 257 | 10.4K | 233 | 212 |
| 8 | Biology | 124 | 9.2K | 2084 | 2053 |
| 9 | Polymers | 270 | 7.8K | 429 | 440 |
| 10 | Pollution | 139 | 7.6K | 714 | 714 |
| 11 | Science | 87 | 7.4K | 2868 | 2428 |
| 12 | Materials Science | 225 | 7.1K | 443 | 557 |
| 13 | Catalysis | 182 | 7.1K | 446 | 497 |
| 14 | Chemical Engineering | 349 | 7.1K | 266 | 546 |
| 15 | Physical Chemistry | 68 | 6.9K | 389 | 139 |
| 16 | polymerization | 226 | 6.6K | 389 | 397 |
| 17 | Electronics | 425 | 6.2K | 106 | 179 |
| 18 | Japan | 571 | 5.1K | 47 | 59 |
| 19 | Optics | 158 | 5.0K | 643 | 418 |
| 20 | Biochemistry | 190 | 4.7K | 1689 | 2070 |
| 21 | Natural history | 23 | 4.4K | 1845 | 1979 |
| 22 | environmental pollution | 105 | 4.1K | 620 | 684 |
| 23 | Nanostructured Materials | 74 | 3.7K | 674 | 498 |
| 24 | Environmental monitoring | 82 | 3.5K | 519 | 539 |
| 25 | Photonics | 25 | 3.4K | 617 | 284 |
| 26 | Technology | 311 | 3.1K | 146 | 486 |
| 27 | Environment | 36 | 3.0K | 1730 | 1492 |
| 28 | Condensed Matter | 167 | 3.0K | 662 | 869 |
| 29 | Solid State Physics | 163 | 2.9K | 710 | 892 |
| 30 | Economics | 124 | 2.9K | 664 | 625 |
| 31 | Molecular Biology | 78 | 2.9K | 2350 | 2629 |
| 32 | Biocompatible Materials | 65 | 2.7K | 939 | 1040 |
| 33 | Light | 21 | 2.7K | 298 | 233 |
| 34 | Metallurgy | 198 | 2.6K | 182 | 372 |
| 35 | Nanotechnology | 78 | 2.3K | 1217 | 1466 |
| 36 | Metals | 228 | 2.3K | 127 | 395 |
| 37 | Electrochemical Analysis | 72 | 2.2K | 141 | 137 |
| 38 | Nuclear Physics | 116 | 2.2K | 1159 | 1287 |
| 39 | Environmental Chemistry | 19 | 2.2K | 795 | 487 |
| 40 | Environmental Health | 54 | 2.1K | 1399 | 1458 |
| 41 | Chemical industry | 188 | 2.1K | 58 | 53 |
| 42 | Microbiology | 70 | 2.1K | 1879 | 2369 |
| 43 | mass transfer | 46 | 2.1K | 284 | 223 |
| 44 | Membranes | 79 | 2.0K | 223 | 415 |
| 45 | Ceramics | 89 | 2.0K | 133 | 187 |
| 46 | Superconductors | 95 | 2.0K | 44 | 40 |
| 47 | Geology | 74 | 2.0K | 739 | 740 |
| 48 | Electrical Engineering | 402 | 2.0K | 107 | 234 |
| 49 | Organic Chemistry | 111 | 1.9K | 424 | 778 |
| 50 | Superconductivity | 70 | 1.9K | 37 | 33 |
| 51 | Spectrum analysis | 80 | 1.9K | 1060 | 1318 |
| 52 | Energy Conversion | 10 | 1.9K | 732 | 425 |
| 53 | Fracture mechanics | 63 | 1.9K | 168 | 159 |
| 54 | Biodiversity conservation | 8 | 1.8K | 1254 | 747 |
| 55 | Ocean Engineering | 93 | 1.8K | 143 | 262 |
| 56 | Climate change | 3 | 1.7K | 1261 | 680 |
| 56 | Eutrophication | 3 | 1.7K | 1198 | 679 |
| 58 | Solid State Chemistry | 84 | 1.7K | 338 | 373 |
| 58 | biological evolution | 24 | 1.7K | 829 | 739 |
| 60 | Analytical Chemistry | 188 | 1.7K | 458 | 1301 |
| 61 | Geophysics | 73 | 1.6K | 959 | 1183 |
| 62 | Research | 40 | 1.6K | 3650 | 3219 |
| 63 | Environmental Management | 13 | 1.6K | 1591 | 747 |
| 64 | Astrophysics | 52 | 1.6K | 1256 | 1377 |
| 65 | Biophysics | 142 | 1.6K | 1041 | 1961 |
| 66 | Composite Materials | 47 | 1.6K | 662 | 783 |
| 67 | Medicine | 28 | 1.6K | 5531 | 4349 |
| 68 | Water pollution | 52 | 1.6K | 553 | 771 |
| 69 | Evolution | 24 | 1.5K | 716 | 651 |
| 70 | Glass | 41 | 1.5K | 233 | 227 |
| 70 | pottery | 42 | 1.5K | 214 | 223 |
| 72 | environmental indicators | 8 | 1.5K | 692 | 121 |
| 73 | Biotechnology | 76 | 1.5K | 1447 | 2403 |
| 74 | Statistical physics | 69 | 1.4K | 988 | 1094 |
| 75 | Water | 45 | 1.4K | 582 | 880 |
| 76 | Tribology | 61 | 1.4K | 124 | 142 |
| 76 | Ceramic materials | 50 | 1.4K | 170 | 166 |
| 78 | Bioengineering | 76 | 1.4K | 818 | 1757 |
| 79 | Toxicology | 53 | 1.4K | 1353 | 1593 |
| 80 | environmental protection | 35 | 1.3K | 939 | 984 |
| 81 | Soil Mechanics | 55 | 1.2K | 181 | 274 |
| 82 | actuators | 31 | 1.2K | 621 | 614 |
| 82 | transducers | 31 | 1.2K | 621 | 614 |
| 84 | Mathematical Physics | 59 | 1.2K | 701 | 713 |
| 85 | Zeolites | 41 | 1.2K | 97 | 160 |
| 86 | Environmental pollutants | 33 | 1.1K | 555 | 583 |
| 87 | Mathematics | 106 | 1.1K | 1367 | 1435 |
| 88 | Geodynamics | 20 | 1.1K | 327 | 247 |
| 89 | Fluid Mechanics | 83 | 1.1K | 210 | 388 |
| 90 | Naval Architecture | 82 | 1.1K | 15 | 28 |
| 91 | Hydraulic Engineering | 40 | 1.1K | 152 | 174 |
| 92 | Environmental Engineering | 25 | 1.0K | 1460 | 1416 |
| 93 | pollutants | 30 | 1.0K | 456 | 544 |
| 94 | Biomedical Engineering | 60 | 1.0K | 1156 | 1749 |
| 95 | Photochemistry | 49 | 1.0K | 225 | 376 |
| 96 | economic policy | 42 | 992 | 545 | 432 |
| 97 | Meteorology | 36 | 963 | 722 | 1052 |
| 98 | Developmental Biology | 11 | 961 | 1354 | 1075 |
| 99 | Earth Sciences | 27 | 946 | 1290 | 1127 |
| 100 | Coastal Engineering | 39 | 934 | 4 | 4 |
| 101 | Production Management | 12 | 860 | 524 | 485 |
| 102 | Calorimetry | 57 | 851 | 78 | 114 |
| 102 | Thermal analysis | 57 | 851 | 78 | 114 |
| 104 | Photobiology | 38 | 847 | 167 | 255 |
| 105 | Environmental Policy | 18 | 817 | 1438 | 1501 |
| 106 | Agriculture | 12 | 801 | 1341 | 728 |
| 107 | Petrology | 31 | 799 | 315 | 419 |
| 108 | Information Theory | 37 | 796 | 190 | 268 |
| 109 | Process Control | 9 | 790 | 466 | 346 |
| 110 | Marine Engineering | 48 | 788 | 22 | 10 |
| 111 | Computer Graphics | 22 | 785 | 578 | 459 |
| 112 | Nonlinear Dynamics | 22 | 779 | 993 | 832 |
| 113 | Plate Tectonics | 13 | 778 | 84 | 33 |
| 114 | Brain | 9 | 777 | 2018 | 1361 |
| 115 | fuel cells | 13 | 776 | 652 | 595 |
| 116 | Engineering Mathematics | 22 | 761 | 923 | 458 |
| 117 | Computer-Aided Design | 25 | 749 | 263 | 263 |
| 118 | Quantum Gravity | 40 | 744 | 880 | 1052 |
| 119 | Engineering | 59 | 729 | 856 | 1182 |
| 119 | Agricultural Ecology | 8 | 729 | 715 | 489 |
| 121 | Origin of life | 16 | 720 | 14 | 11 |
| 121 | Organelle biogenesis | 16 | 720 | 33 | 27 |
| 123 | Plant Ecology | 31 | 702 | 495 | 872 |
| 124 | Marine Biology | 28 | 691 | 1026 | 1144 |
| 125 | Mineralogy | 28 | 687 | 478 | 514 |
| 126 | Psychology | 17 | 680 | 2749 | 2140 |
| 127 | Economic History | 55 | 670 | 784 | 994 |
| 128 | Fluid Dynamics | 18 | 665 | 454 | 340 |
| 129 | Neurons | 1 | 653 | 1332 | 874 |
| 130 | Structural Engineering | 64 | 644 | 253 | 511 |
| 131 | Cytology | 17 | 642 | 2630 | 3013 |
| 132 | Environmental Toxicology | 20 | 635 | 936 | 1215 |
| 133 | nucleic acids | 35 | 631 | 551 | 1232 |
| 134 | Optical materials | 24 | 630 | 1091 | 1382 |
| 135 | Geochemistry | 27 | 602 | 830 | 1079 |
| 136 | mathematical analysis | 55 | 601 | 599 | 678 |
| 137 | nanoscience | 27 | 594 | 1112 | 1629 |
| 138 | energy conservation | 12 | 586 | 947 | 909 |
| 138 | commerce | 18 | 586 | 534 | 571 |
| 140 | Iron | 41 | 583 | 72 | 102 |
| 141 | sanitation | 10 | 565 | 1005 | 1150 |
| 142 | probabilities | 18 | 562 | 579 | 287 |
| 143 | Soil biology | 26 | 560 | 289 | 579 |
| 144 | Economic Development | 11 | 556 | 954 | 804 |
| 145 | Telecommunication | 162 | 547 | 76 | 569 |
| 146 | Combustion | 21 | 541 | 452 | 506 |
| 147 | Artificial Intelligence | 30 | 540 | 1336 | 1623 |
| 147 | Bacteriology | 9 | 540 | 1417 | 1253 |
| 149 | Emulsions | 21 | 538 | 57 | 27 |
| 150 | concrete | 48 | 532 | 141 | 535 |
| 151 | Oceanography | 20 | 526 | 882 | 986 |
| 152 | environmental exposure | 17 | 521 | 780 | 838 |
| 153 | Soft Condensed Matter | 15 | 512 | 521 | 475 |
| 154 | international trade | 13 | 504 | 212 | 192 |
| 155 | biopolymers | 13 | 491 | 615 | 541 |
| 156 | Microbial Ecology | 17 | 485 | 1127 | 1694 |
| 156 | Molecular structure | 15 | 485 | 1259 | 1206 |
| 158 | Histology | 9 | 482 | 1358 | 1074 |
| 158 | Entomology | 23 | 482 | 999 | 885 |
| 160 | Renewable Energy Sources | 9 | 461 | 1758 | 1983 |
| 161 | Earthquake Engineering | 30 | 445 | 365 | 604 |
| 162 | Structural dynamics | 14 | 436 | 467 | 521 |
| 163 | Graph Theory | 72 | 433 | 39 | 124 |
| 164 | Soil ecology | 17 | 431 | 243 | 405 |
| 165 | Water quality management | 25 | 426 | 502 | 674 |
| 166 | Waste management | 24 | 421 | 310 | 420 |
| 166 | Water Purification | 24 | 421 | 246 | 344 |
| 168 | China | 19 | 419 | 1220 | 1170 |
| 169 | Genetics | 9 | 416 | 3209 | 3256 |
| 169 | Astronomy | 19 | 416 | 1615 | 1964 |
| 169 | Metallic Glasses | 3 | 416 | 500 | 171 |
| 172 | Rock Mechanics | 17 | 414 | 340 | 431 |
| 173 | Wireless Communication Systems | 39 | 407 | 402 | 685 |
| 174 | vibration | 21 | 405 | 390 | 469 |
| 175 | Asia | 37 | 403 | 582 | 817 |
| 175 | lasers | 25 | 403 | 544 | 597 |
| 177 | Agricultural Chemistry | 23 | 402 | 903 | 1339 |
| 178 | Nanostructures | 17 | 397 | 934 | 1294 |
| 179 | Biomechanics | 13 | 396 | 730 | 762 |
| 180 | Biodiversity | 10 | 393 | 1464 | 1374 |
| 180 | Genes | 10 | 393 | 650 | 491 |
| 182 | Psycholinguistics | 6 | 388 | 764 | 541 |
| 182 | Neurolinguistics | 6 | 388 | 329 | 232 |
| 182 | Speech Disorders | 6 | 388 | 862 | 509 |
| 182 | Speech | 6 | 388 | 714 | 456 |
| 182 | language | 6 | 388 | 602 | 355 |
| 187 | Molecular Genetics | 8 | 387 | 1573 | 1424 |
| 188 | Freezing | 33 | 385 | 51 | 71 |
| 189 | Magnetic Resonance Spectroscopy | 20 | 379 | 503 | 574 |
| 189 | Luminescence | 29 | 379 | 256 | 397 |
| 191 | Cognition | 3 | 375 | 2006 | 1021 |
| 192 | Manufacturing Processes | 14 | 372 | 1194 | 1213 |
| 193 | Nondestructive testing | 17 | 369 | 184 | 204 |
| 194 | Botany | 26 | 363 | 1804 | 2696 |
| 195 | Forest Ecology | 10 | 362 | 637 | 654 |
| 196 | Neuropsychology | 1 | 361 | 4219 | 1489 |
| 196 | Neurophysiology | 1 | 361 | 4962 | 2273 |
| 196 | Psychophysiology | 2 | 361 | 4096 | 2137 |
| 199 | Probability | 6 | 353 | 462 | 283 |
| 200 | Biochemical Engineering | 14 | 352 | 1847 | 3053 |
| 201 | Forest Management | 9 | 350 | 637 | 615 |
| 202 | Engineering Geology | 13 | 347 | 724 | 778 |
| 203 | Wildlife conservation | 8 | 344 | 836 | 921 |
| 203 | nuclear magnetic resonance spectroscopy | 12 | 344 | 385 | 303 |
| 205 | Energy Policy | 8 | 343 | 1863 | 1966 |
| 206 | proteins | 9 | 338 | 1602 | 1377 |
| 207 | Operations Research | 17 | 333 | 1058 | 1191 |
| 208 | pigments | 30 | 331 | 126 | 330 |
| 209 | radioactive waste | 6 | 329 | 535 | 606 |
| 209 | industrial waste | 6 | 329 | 580 | 608 |
| 209 | Hazardous waste | 6 | 329 | 668 | 648 |
| 212 | exobiology | 7 | 323 | 215 | 224 |
| 213 | supercritical fluids | 8 | 320 | 211 | 194 |
| 214 | Tunneling | 7 | 318 | 187 | 191 |
| 214 | underground construction | 7 | 318 | 187 | 191 |
| 216 | Production Engineering | 18 | 317 | 770 | 843 |
| 217 | electrocatalysis | 15 | 316 | 6 | 8 |
| 218 | Cytogenetics | 7 | 314 | 1337 | 1518 |
| 219 | Physical organic chemistry | 16 | 312 | 608 | 724 |
| 220 | Public Administration | 19 | 311 | 547 | 573 |
| 220 | consumer behavior | 1 | 311 | 1070 | 298 |
| 222 | Green Chemistry | 9 | 304 | 1156 | 1382 |
| 223 | Mechanical Engineering | 76 | 301 | 340 | 1016 |
| 224 | miniaturization | 8 | 296 | 1335 | 1539 |
| 225 | Environmental Economics | 7 | 288 | 214 | 168 |
| 226 | Signal Transduction | 6 | 281 | 1222 | 1254 |
| 226 | Gene expression | 6 | 281 | 181 | 163 |
| 226 | Cell division | 6 | 281 | 384 | 304 |
| 229 | Game Theory | 19 | 277 | 157 | 240 |
| 229 | Environmental Law | 2 | 277 | 1710 | 1119 |
| 229 | Marine Pollution | 3 | 277 | 1430 | 922 |
| 232 | Nonlinear functional analysis | 27 | 276 | 275 | 500 |
| 233 | energy resources | 5 | 275 | 1184 | 1360 |
| 234 | Smart Materials | 15 | 274 | 329 | 460 |
| 235 | marketing | 3 | 271 | 2128 | 1215 |
| 235 | Australia | 13 | 271 | 1000 | 927 |
| 237 | Industrial Microbiology | 9 | 270 | 1266 | 1588 |
| 237 | optical devices | 10 | 270 | 195 | 157 |
| 239 | protein | 5 | 267 | 1245 | 908 |
| 240 | Building Materials | 14 | 266 | 831 | 1352 |
| 241 | Functional Analysis | 27 | 264 | 368 | 591 |
| 241 | Mathematical Economics | 11 | 264 | 115 | 177 |
| 243 | Sustainable Engineering | 8 | 260 | 1102 | 1218 |
| 244 | Combinatorial analysis | 52 | 256 | 157 | 331 |
| 245 | Industrial Engineering | 8 | 253 | 1333 | 1162 |
| 246 | Microelectronics | 11 | 252 | 1156 | 1444 |
| 247 | Money | 5 | 251 | 209 | 169 |
| 248 | Plant Biotechnology | 26 | 250 | 170 | 545 |
| 248 | Plant genetic engineering | 26 | 250 | 232 | 782 |
| 248 | Export Marketing | 1 | 250 | 479 | 150 |
| 251 | Plastics | 18 | 249 | 685 | 913 |
| 252 | Soil Science | 6 | 246 | 1565 | 1382 |
| 252 | Environmental Geology | 1 | 246 | 2815 | 1035 |
| 252 | management | 15 | 246 | 1784 | 2360 |
| 252 | Sedimentary rocks | 4 | 246 | 603 | 389 |
| 256 | Econometrics | 10 | 242 | 835 | 779 |
| 256 | particles | 30 | 242 | 129 | 459 |
| 256 | NMR | 7 | 242 | 356 | 183 |
| 259 | Computational Fluid Dynamics | 14 | 240 | 230 | 311 |
| 260 | nuclear magnetic resonance | 18 | 239 | 494 | 709 |
| 261 | Systems Biology | 4 | 236 | 1803 | 1157 |
| 262 | Crystal growth | 7 | 235 | 743 | 648 |
| 263 | Geography | 38 | 234 | 621 | 1539 |
| 263 | Statistics | 19 | 234 | 1306 | 1627 |
| 263 | Reproduction | 5 | 234 | 2379 | 1824 |
| 266 | Semiconductors | 28 | 233 | 634 | 1109 |
| 267 | Chemical analysis | 107 | 232 | 43 | 809 |
| 267 | Algal blooms | 4 | 232 | 273 | 273 |
| 267 | Cyanobacteria | 4 | 232 | 273 | 273 |
| 267 | microalgae | 4 | 232 | 273 | 273 |
| 271 | Energy Storage | 10 | 231 | 725 | 905 |
| 271 | Evolutionary Computation | 7 | 231 | 170 | 236 |
| 273 | Fisheries | 10 | 229 | 1110 | 1192 |
| 274 | Meteorites | 17 | 227 | 497 | 978 |
| 275 | Multiphase Flow | 2 | 226 | 529 | 246 |
| 276 | Anatomy | 3 | 225 | 2525 | 1624 |
| 277 | Organometallic chemistry | 4 | 224 | 2038 | 1089 |
| 278 | Magnetic Materials | 17 | 222 | 639 | 1059 |
| 279 | Cell Biology | 13 | 221 | 2844 | 4349 |
| 279 | Credit | 2 | 221 | 147 | 60 |
| 281 | Cybernetics | 4 | 219 | 1332 | 838 |
| 282 | Planets | 15 | 218 | 943 | 1546 |
| 283 | plant communities | 16 | 213 | 487 | 1062 |
| 283 | Quantum theory | 17 | 213 | 346 | 572 |
| 285 | Information Science | 15 | 210 | 1164 | 1882 |
| 286 | Linguistics | 2 | 208 | 2185 | 719 |
| 287 | Pharmacology | 8 | 206 | 4573 | 4815 |
| 287 | Nanoparticles | 6 | 206 | 1593 | 1544 |
| 287 | Transport | 4 | 206 | 639 | 506 |
| 287 | Sea | 4 | 206 | 571 | 418 |
| 287 | Fishery resources | 4 | 206 | 658 | 451 |
| 287 | coal | 11 | 206 | 886 | 1426 |
| 293 | Bioinorganic chemistry | 4 | 205 | 1471 | 1025 |
| 294 | Civil Engineering | 19 | 201 | 603 | 587 |
| 294 | Shock Waves | 13 | 201 | 51 | 84 |
| 296 | Paleontology | 24 | 198 | 499 | 872 |
| 296 | Sustainable Development | 6 | 198 | 1711 | 1732 |
| 298 | Differential Equations | 10 | 197 | 559 | 504 |
| 299 | Surface-Active Agents | 8 | 194 | 644 | 973 |
| 299 | Surface properties | 8 | 194 | 704 | 1072 |
| 301 | Genetic algorithms | 5 | 193 | 141 | 176 |
| 302 | Granular materials | 21 | 192 | 82 | 339 |
| 303 | Liquid Crystals | 37 | 191 | 184 | 331 |
| 304 | Information Technology | 30 | 190 | 593 | 1486 |
| 304 | Data Mining | 3 | 190 | 2091 | 1440 |
| 304 | data collection | 3 | 190 | 1399 | 1041 |
| 307 | Intelligent Control Systems | 12 | 186 | 440 | 367 |
| 307 | Cellulose | 10 | 186 | 258 | 476 |
| 309 | food technology | 5 | 185 | 2411 | 2251 |
| 309 | Fermentation | 6 | 185 | 181 | 137 |
| 311 | Applied Mathematics | 8 | 183 | 533 | 134 |
| 311 | Bioorganic chemistry | 7 | 183 | 2357 | 2581 |
| 313 | magnetic resonance | 5 | 181 | 486 | 266 |
| 314 | Embryology | 2 | 180 | 2289 | 1790 |
| 315 | Mechatronics | 17 | 179 | 171 | 373 |
| 315 | Signal Processing | 15 | 179 | 900 | 1288 |
| 317 | Planetary Science | 13 | 176 | 272 | 345 |
| 318 | soil microbiology | 8 | 174 | 1037 | 1793 |
| 318 | ecosystem | 6 | 174 | 1143 | 1453 |
| 320 | air quality | 3 | 172 | 236 | 91 |
| 321 | Robotics | 29 | 171 | 432 | 1233 |
| 322 | finance | 15 | 168 | 1133 | 1551 |
| 323 | Paleoclimatology | 3 | 167 | 1246 | 1048 |
| 323 | Paleoecology | 3 | 167 | 1218 | 957 |
| 323 | Paleogeography | 3 | 167 | 1077 | 872 |
| 326 | Fertilizers | 6 | 165 | 262 | 293 |
| 327 | Food | 2 | 164 | 4497 | 2997 |
| 328 | Carbon | 20 | 161 | 480 | 1517 |
| 329 | Nuclear Engineering | 16 | 160 | 600 | 666 |
| 330 | Biosensors | 5 | 158 | 1145 | 1632 |
| 331 | Plants | 10 | 156 | 1377 | 2096 |
| 332 | atmosphere | 2 | 153 | 1195 | 743 |
| 333 | Nuclear Fusion | 12 | 152 | 360 | 432 |
| 333 | Lightweight concrete | 5 | 152 | 289 | 559 |
| 335 | Biogeography | 3 | 151 | 1176 | 1280 |
| 336 | Microbial Biotechnology | 2 | 149 | 1499 | 815 |
| 336 | Catalysts | 5 | 149 | 567 | 509 |
| 338 | Geriatrics | 9 | 147 | 2333 | 2753 |
| 339 | Environmental Microbiology | 5 | 146 | 1279 | 1789 |
| 340 | Cosmology | 8 | 144 | 1068 | 912 |
| 341 | Food preferences | 4 | 143 | 354 | 381 |
| 342 | Risk assessment | 1 | 142 | 1431 | 350 |
| 342 | ecological risk assessment | 1 | 142 | 668 | 166 |
| 342 | Middle East | 5 | 142 | 834 | 440 |
| 342 | Health Risk Assessment | 1 | 142 | 1129 | 258 |
| 346 | Matroids | 11 | 138 | 91 | 160 |
| 347 | International Finance | 13 | 136 | 814 | 1343 |
| 348 | income distribution | 1 | 135 | 330 | 169 |
| 349 | Development Economics | 2 | 134 | 703 | 380 |
| 349 | Recycling | 3 | 134 | 660 | 953 |
| 351 | Africa | 4 | 132 | 1730 | 941 |
| 352 | Zoology | 13 | 131 | 1613 | 2130 |
| 352 | body temperature | 7 | 131 | 261 | 348 |
| 354 | Physiology | 7 | 128 | 3799 | 4628 |
| 355 | economic forecasting | 1 | 127 | 730 | 333 |
| 355 | Forecasting | 1 | 127 | 1138 | 452 |
| 355 | Toxins | 1 | 127 | 2011 | 823 |
| 358 | Seismology | 7 | 126 | 388 | 456 |
| 359 | soil management | 3 | 125 | 640 | 695 |
| 359 | tillage | 3 | 125 | 476 | 588 |
| 361 | Urban Policy | 2 | 124 | 1121 | 792 |
| 361 | Stochastic Processes | 4 | 124 | 893 | 602 |
| 361 | freshwater biology | 10 | 124 | 522 | 883 |
| 364 | Chemical processes | 6 | 123 | 457 | 459 |
| 364 | city planning | 2 | 123 | 2301 | 1337 |
| 366 | arthritis | 1 | 121 | 2438 | 1816 |
| 367 | Psychiatry | 2 | 120 | 6456 | 4925 |
| 367 | Neurobiology | 2 | 120 | 2633 | 2390 |
| 367 | Recombinant DNA | 7 | 120 | 1243 | 1675 |
| 370 | explosives | 16 | 119 | 88 | 136 |
| 371 | Population Genetics | 4 | 118 | 1299 | 1617 |
| 372 | Biogeochemistry | 7 | 117 | 870 | 1455 |
| 372 | United States | 9 | 117 | 4161 | 5082 |
| 374 | Metallography | 5 | 116 | 670 | 752 |
| 375 | Atomic spectroscopy | 9 | 114 | 766 | 1045 |
| 376 | Green Technology | 1 | 113 | 1071 | 290 |
| 377 | Nutrition | 2 | 112 | 6412 | 5053 |
| 377 | Wireless Communication | 10 | 112 | 145 | 255 |
| 379 | micromechanics | 4 | 111 | 584 | 597 |
| 379 | Diet | 1 | 111 | 4280 | 2875 |
| 381 | Radiation | 7 | 110 | 1828 | 2039 |
| 382 | Mining Engineering | 6 | 109 | 378 | 471 |
| 382 | Architecture | 35 | 109 | 98 | 307 |
| 382 | Entrepreneurship | 2 | 109 | 1426 | 1181 |
| 382 | innovation | 2 | 109 | 862 | 833 |
| 386 | global environmental change | 4 | 108 | 885 | 1214 |
| 386 | East Asia | 13 | 108 | 195 | 317 |
| 388 | Geomagnetism | 5 | 107 | 627 | 665 |
| 389 | Social Sciences | 10 | 106 | 2456 | 2810 |
| 389 | Mass Spectrometry | 17 | 106 | 544 | 1316 |
| 389 | Molecular ecology | 2 | 106 | 1613 | 1739 |
| 389 | Communication | 12 | 106 | 1117 | 1714 |
| 393 | Ion Exchange | 7 | 105 | 82 | 102 |
| 393 | Solvent extraction | 7 | 105 | 82 | 102 |
| 395 | Development | 3 | 104 | 957 | 1034 |
| 396 | Venture Capital | 1 | 102 | 540 | 535 |
| 396 | polar regions | 7 | 102 | 480 | 676 |
| 396 | fusion reactors | 9 | 102 | 304 | 305 |
| 399 | industrial hygiene | 6 | 101 | 931 | 794 |
| 399 | Social Change | 1 | 101 | 1907 | 1340 |
| 401 | Microorganisms | 4 | 100 | 1273 | 1894 |
| 402 | Sociology | 8 | 99 | 2249 | 3111 |
| 402 | Energy Harvesting | 3 | 99 | 512 | 787 |
| 402 | Cosmochemistry | 7 | 99 | 676 | 1124 |
| 405 | structural stability | 4 | 98 | 435 | 452 |
| 405 | Building | 28 | 98 | 153 | 435 |
| 407 | Soil fertility | 3 | 97 | 396 | 534 |
| 407 | Antarctica | 7 | 97 | 343 | 434 |
| 409 | Bioenergetics | 2 | 96 | 1303 | 1109 |
| 409 | Energy metabolism | 2 | 96 | 935 | 813 |
| 409 | nucleotides | 17 | 96 | 95 | 197 |
| 409 | cell membrane | 2 | 96 | 895 | 789 |
| 413 | Optical Communications | 1 | 95 | 1256 | 494 |
| 413 | Dynamics | 11 | 95 | 1047 | 1424 |
| 413 | Crystallography | 15 | 95 | 903 | 1158 |
| 413 | Ultrasonics | 4 | 95 | 1066 | 1438 |
| 417 | Climatology | 3 | 94 | 2118 | 2149 |
| 417 | Architectural Design | 13 | 94 | 123 | 270 |
| 417 | Solar Energy | 5 | 94 | 1570 | 2149 |
| 417 | Flexible manufacturing systems | 3 | 94 | 403 | 407 |
| 421 | food contamination | 5 | 93 | 919 | 995 |
| 422 | Pharmacy | 5 | 92 | 2126 | 2591 |
| 422 | Hydrodynamics | 5 | 92 | 501 | 701 |
| 422 | drug toxicity | 1 | 92 | 1108 | 572 |
| 425 | Discrete Mathematics | 30 | 90 | 20 | 103 |
| 425 | graph | 30 | 90 | 20 | 103 |
| 427 | Labor Economics | 4 | 89 | 465 | 517 |
| 427 | Food additives | 4 | 89 | 1225 | 1592 |
| 427 | Bioelectronics | 3 | 89 | 1313 | 1942 |
| 430 | Structural design | 3 | 88 | 968 | 850 |
| 430 | Organometallic compounds | 4 | 88 | 1254 | 1300 |
| 432 | Neurology | 4 | 87 | 5959 | 6685 |
| 432 | Thermodynamics | 8 | 87 | 765 | 881 |
| 432 | biological monitoring | 2 | 87 | 784 | 669 |
| 432 | Acarology | 13 | 87 | 76 | 283 |
| 436 | Medical Laboratory Science | 4 | 86 | 2298 | 2892 |
| 437 | Petroleum | 14 | 85 | 117 | 202 |
| 438 | Nanochemistry | 3 | 84 | 1420 | 1295 |
| 439 | Atmospheric Physics | 6 | 83 | 1426 | 2031 |
| 439 | radiative transfer | 4 | 83 | 630 | 596 |
| 441 | Experimental Psychology | 3 | 82 | 649 | 624 |
| 441 | Demography | 4 | 82 | 698 | 869 |
| 443 | natural disasters | 6 | 81 | 977 | 1663 |
| 444 | Computer Science | 41 | 80 | 347 | 1964 |
| 444 | Chemical kinetics | 3 | 80 | 901 | 520 |
| 444 | wood | 3 | 80 | 516 | 407 |
| 447 | Structural health monitoring | 3 | 79 | 225 | 284 |
| 447 | Product life cycle | 6 | 79 | 194 | 473 |
| 447 | green products | 6 | 79 | 171 | 463 |
| 450 | hazard mitigation | 5 | 78 | 751 | 1163 |
| 451 | Organic Geochemistry | 5 | 77 | 315 | 640 |
| 451 | Corporate governance | 2 | 77 | 858 | 736 |
| 451 | Ventilation | 6 | 77 | 345 | 655 |
| 454 | Analytical Biochemistry | 4 | 75 | 1956 | 2308 |
| 454 | System analysis | 6 | 75 | 2128 | 2679 |
| 454 | Catalyst | 1 | 75 | 93 | 121 |
| 457 | Number Theory | 4 | 74 | 824 | 478 |
| 457 | Measurement | 4 | 74 | 1269 | 1439 |
| 457 | Animal ecology | 2 | 74 | 1689 | 1459 |
| 460 | Social Psychology | 9 | 72 | 1368 | 2680 |
| 461 | Crystallization | 5 | 71 | 469 | 445 |
| 461 | Proteome | 3 | 71 | 1568 | 2032 |
| 461 | Ultrasonic Imaging | 2 | 71 | 795 | 682 |
| 461 | Ultrasound | 2 | 71 | 837 | 753 |
| 461 | enzymes | 3 | 71 | 1892 | 2236 |
| 461 | traffic safety | 7 | 71 | 170 | 333 |
| 467 | Logistics | 3 | 70 | 554 | 757 |
| 467 | Inventory Control | 3 | 70 | 63 | 108 |
| 467 | Biomass Energy | 3 | 70 | 2904 | 3548 |
| 467 | Sports | 2 | 70 | 2952 | 2109 |
| 471 | Social Choice Theory | 6 | 69 | 140 | 202 |
| 471 | Welfare Economics | 6 | 69 | 306 | 559 |
| 471 | extraterrestrial environment | 8 | 69 | 376 | 672 |
| 471 | impact | 3 | 69 | 371 | 550 |
| 475 | Marine biodiversity | 5 | 68 | 208 | 213 |
| 475 | indoor air pollution | 5 | 68 | 288 | 604 |
| 475 | Sick building syndrome | 5 | 68 | 288 | 604 |
| 478 | Ophthalmology | 2 | 67 | 2628 | 2497 |
| 478 | movement | 2 | 67 | 471 | 496 |
| 480 | Geometry | 8 | 66 | 892 | 890 |
| 480 | Heat Exchangers | 5 | 66 | 1021 | 1797 |
| 480 | Porous materials | 2 | 66 | 1095 | 763 |
| 483 | DNA | 3 | 65 | 737 | 833 |
| 484 | older people | 6 | 64 | 1448 | 1756 |
| 484 | Spiders | 14 | 64 | 11 | 11 |
| 486 | Systems Engineering | 7 | 63 | 1609 | 2221 |
| 486 | Power Electronics | 7 | 63 | 427 | 728 |
| 486 | Gerontology | 5 | 63 | 1951 | 2333 |
| 486 | Molecules | 7 | 63 | 1227 | 1633 |
| 486 | glycoproteins | 1 | 63 | 1035 | 842 |
| 486 | Glycoconjugates | 1 | 63 | 1035 | 842 |
| 486 | Oligosaccharides | 1 | 63 | 589 | 423 |
| 486 | Aging | 6 | 63 | 2714 | 3867 |
| 486 | glycolipids | 1 | 63 | 1035 | 842 |
| 495 | Aerodynamics | 13 | 62 | 51 | 51 |
| 495 | Microcirculation | 2 | 62 | 760 | 752 |
| 495 | Child Development | 3 | 62 | 2471 | 2860 |
| 495 | Blood vessels | 2 | 62 | 614 | 605 |
| 499 | Magnetic Resonance Imaging | 3 | 61 | 726 | 795 |
| 499 | Atmospheric Chemistry | 3 | 61 | 1123 | 1581 |
| 499 | Plant physiology | 3 | 61 | 2447 | 3118 |
| 499 | DNS | 2 | 61 | 819 | 831 |
| 503 | Nuclear Energy | 8 | 59 | 779 | 1121 |
| 503 | Genetic engineering | 5 | 59 | 2200 | 3540 |
| 503 | Molecular cloning | 5 | 59 | 1440 | 2239 |
| 503 | Genetic recombination | 5 | 59 | 1415 | 2207 |
| 503 | synthesis | 7 | 59 | 758 | 1048 |
| 508 | Genetic variation | 1 | 57 | 311 | 184 |
| 508 | Welding | 4 | 57 | 289 | 187 |
| 508 | Phylogeny | 1 | 57 | 1678 | 1563 |
| 511 | Biomass | 1 | 56 | 1355 | 1317 |
| 512 | Lipid metabolism | 1 | 55 | 946 | 897 |
| 512 | Ecosystem management | 3 | 55 | 809 | 1078 |
| 512 | Lipids | 1 | 55 | 2675 | 2411 |
| 512 | Lipid | 1 | 55 | 951 | 900 |
| 516 | air quality management | 4 | 54 | 481 | 955 |
| 516 | Quantum Optics | 8 | 54 | 606 | 1095 |
| 516 | Laser Spectroscopy | 8 | 54 | 562 | 1023 |
| 516 | astronomical phenomena | 6 | 54 | 433 | 712 |
| 520 | Technological Innovations | 5 | 53 | 846 | 1501 |
| 520 | feeding behavior | 1 | 53 | 1552 | 1344 |
| 520 | Radio | 5 | 53 | 720 | 845 |
| 520 | Economic Assistance | 2 | 53 | 1056 | 1278 |
| 520 | Developing countries | 2 | 53 | 3749 | 3348 |
| 520 | world | 2 | 53 | 1097 | 1489 |
| 520 | Appetite | 1 | 53 | 1390 | 1220 |
| 527 | Public Health | 4 | 52 | 6858 | 8596 |
| 527 | Computational Chemistry | 3 | 52 | 820 | 1060 |
| 527 | Industrial Safety | 6 | 52 | 928 | 1638 |
| 527 | nuclear astrophysics | 4 | 52 | 498 | 714 |
| 527 | solar power | 2 | 52 | 1171 | 1531 |
| 527 | Marine resources | 3 | 52 | 817 | 1089 |
| 527 | Futures | 2 | 52 | 468 | 417 |
| 527 | Radio waves | 4 | 52 | 314 | 329 |
| 527 | solar cells | 2 | 52 | 1304 | 1677 |
| 536 | peptides | 3 | 51 | 1148 | 1221 |
| 536 | Human Resources | 4 | 51 | 380 | 862 |
| 536 | Nonlinear systems | 3 | 51 | 658 | 738 |
| 536 | shipbuilding | 4 | 51 | 84 | 58 |
| 536 | Solar System | 4 | 51 | 872 | 1182 |
| 541 | Quantum electronics | 1 | 50 | 2090 | 1031 |
| 541 | Food service management | 1 | 50 | 758 | 827 |
| 541 | Environmental Geochemistry | 1 | 50 | 1235 | 866 |
| 541 | Obesity | 1 | 50 | 3932 | 3664 |
| 541 | Minerals | 1 | 50 | 1633 | 1192 |
| 546 | Wildlife management | 2 | 49 | 891 | 782 |
| 547 | Clinical Psychology | 2 | 48 | 2188 | 2588 |
| 547 | Community Psychology | 2 | 48 | 819 | 943 |
| 547 | Marine Biotechnology | 1 | 48 | 545 | 498 |
| 547 | plankton | 3 | 48 | 243 | 389 |
| 551 | Marine Ecology | 3 | 46 | 901 | 1116 |
| 551 | Chemical Ecology | 3 | 46 | 638 | 1019 |
| 551 | Tissue Engineering | 1 | 46 | 716 | 568 |
| 551 | Thermochemistry | 1 | 46 | 941 | 713 |
| 551 | pheromones | 3 | 46 | 578 | 974 |
| 556 | Landscape Ecology | 1 | 45 | 965 | 956 |
| 556 | Coastal zone management | 2 | 45 | 1015 | 1155 |
| 556 | Central Asia | 4 | 45 | 147 | 285 |
| 559 | Statistical Mechanics | 16 | 44 | 491 | 1196 |
| 559 | Solutions | 1 | 44 | 777 | 470 |
| 559 | toxicity testing | 3 | 44 | 908 | 1433 |
| 562 | Sedimentology | 2 | 43 | 911 | 1072 |
| 562 | Nanophotonics | 1 | 43 | 663 | 625 |
| 562 | Combinatorial chemistry | 1 | 43 | 1827 | 1724 |
| 562 | occupational diseases | 1 | 43 | 2081 | 1840 |
| 562 | soil pollution | 2 | 43 | 851 | 910 |
| 562 | Fiber Optics | 12 | 43 | 190 | 556 |
| 562 | Plasma devices | 4 | 43 | 310 | 522 |
| 569 | Endocrinology | 1 | 41 | 5665 | 5299 |
| 569 | Ecological Engineering | 1 | 41 | 1343 | 1451 |
| 569 | Andrology | 1 | 41 | 1408 | 1191 |
| 569 | Electromagnetism | 6 | 41 | 572 | 930 |
| 569 | local government | 2 | 41 | 474 | 534 |
| 569 | Social problems | 3 | 41 | 691 | 1018 |
| 569 | Androgens | 1 | 41 | 553 | 579 |
| 576 | Visual Perception | 4 | 40 | 2060 | 3172 |
| 576 | Perception | 4 | 40 | 2284 | 3426 |
| 578 | Regional Planning | 3 | 39 | 1829 | 2194 |
| 578 | Paleoceanography | 1 | 39 | 386 | 481 |
| 578 | Navigation | 17 | 39 | 108 | 504 |
| 581 | Systems Theory | 1 | 38 | 1451 | 663 |
| 581 | Transportation | 4 | 38 | 1678 | 2471 |
| 581 | Biological Systems | 1 | 38 | 1696 | 1271 |
| 581 | Oncogenes | 1 | 38 | 2169 | 2678 |
| 581 | Plant tissue culture | 5 | 38 | 642 | 1336 |
| 581 | Plant cell culture | 5 | 38 | 555 | 1316 |
| 587 | Pharmacognosy | 1 | 37 | 3365 | 3405 |
| 587 | Landscape Architecture | 3 | 37 | 150 | 127 |
| 587 | Numerical Analysis | 6 | 37 | 1995 | 2854 |
| 587 | Tropical Medicine | 2 | 37 | 2956 | 3118 |
| 587 | Plant diseases | 9 | 37 | 1369 | 2800 |
| 587 | Fuzzy systems | 3 | 37 | 2001 | 2086 |
| 593 | Wetland ecology | 2 | 36 | 703 | 849 |
| 593 | biological invasions | 3 | 36 | 749 | 1200 |
| 593 | wetland management | 2 | 36 | 275 | 399 |
| 596 | Reproductive health | 1 | 35 | 1723 | 1565 |
| 596 | Friction | 2 | 35 | 150 | 296 |
| 596 | Chromatography | 3 | 35 | 2086 | 2772 |
| 596 | Chromatographic analysis | 3 | 35 | 2397 | 2992 |
| 600 | Calculus of Variations | 5 | 34 | 428 | 593 |
| 600 | atmospheric models | 2 | 34 | 970 | 1321 |
| 602 | Morphology | 1 | 33 | 1649 | 1240 |
| 602 | Radiochemistry | 6 | 33 | 886 | 1352 |
| 602 | Detectors | 3 | 33 | 1133 | 1314 |
| 605 | Information visualization | 5 | 32 | 112 | 224 |
| 605 | Freeze-Drying | 2 | 32 | 814 | 875 |
| 605 | Hypothermia | 2 | 32 | 814 | 875 |
| 605 | Freeze Drying | 2 | 32 | 814 | 875 |
| 605 | Molecular Spectroscopy | 4 | 32 | 1896 | 2971 |
| 605 | Environmental forensics | 1 | 32 | 212 | 133 |
| 605 | visualization | 5 | 32 | 1628 | 1613 |
| 605 | industrial relations | 1 | 32 | 1600 | 1190 |
| 605 | Microscopy | 1 | 32 | 3363 | 2543 |
| 605 | hygiene | 1 | 32 | 1216 | 1127 |
| 605 | Textile industry | 8 | 32 | 377 | 684 |
| 616 | Image Processing | 5 | 31 | 1842 | 3288 |
| 616 | Nonlinear Optics | 4 | 31 | 246 | 374 |
| 616 | Fixed Point Theory | 3 | 31 | 334 | 303 |
| 616 | Post-traumatic stress disorder | 1 | 31 | 1535 | 1552 |
| 616 | Primates | 2 | 31 | 1126 | 1291 |
| 621 | Orthopedics | 1 | 30 | 3048 | 2891 |
| 621 | Cryptography | 5 | 30 | 514 | 783 |
| 621 | Genomics | 3 | 30 | 4260 | 6203 |
| 621 | Clinical Chemistry | 2 | 30 | 4356 | 5346 |
| 621 | Algorithms | 2 | 30 | 1057 | 1053 |
| 621 | Quantum Chemistry | 4 | 30 | 922 | 1219 |
| 621 | Electrophoresis | 2 | 30 | 2490 | 3110 |
| 621 | Landslides | 4 | 30 | 210 | 642 |
| 629 | Industrial Organization | 2 | 29 | 451 | 606 |
| 629 | Child | 2 | 29 | 3934 | 4329 |
| 629 | Adhesion | 3 | 29 | 790 | 1207 |
| 629 | Industrial Policy | 3 | 29 | 572 | 907 |
| 629 | Public Finance | 2 | 29 | 262 | 233 |
| 629 | Business | 6 | 29 | 1866 | 3426 |
| 629 | Developmental Disabilities | 1 | 29 | 1939 | 2129 |
| 629 | adhesives | 3 | 29 | 845 | 1228 |
| 629 | Mites | 4 | 29 | 432 | 718 |
| 638 | Structuralism | 1 | 28 | 329 | 427 |
| 638 | Marine Geology | 3 | 28 | 681 | 1075 |
| 638 | Computational Biology | 2 | 28 | 4608 | 5332 |
| 638 | Petroleum Geology | 3 | 28 | 598 | 997 |
| 638 | Social Networks | 1 | 28 | 757 | 666 |
| 638 | Social behavior | 1 | 28 | 2281 | 2260 |
| 638 | North America | 2 | 28 | 1449 | 1671 |
| 645 | Anthropology | 5 | 27 | 1559 | 2450 |
| 645 | Kinetics | 2 | 27 | 778 | 971 |
| 645 | Powder Metallurgy | 9 | 27 | 175 | 378 |
| 645 | Bioinformatics | 1 | 27 | 3992 | 3954 |
| 645 | Developmental Immunology | 3 | 27 | 1012 | 1828 |
| 645 | Mycology | 4 | 27 | 1781 | 2945 |
| 645 | Papermaking | 5 | 27 | 147 | 129 |
| 645 | genome | 1 | 27 | 3273 | 3633 |
| 653 | Quantum Communication | 2 | 26 | 277 | 479 |
| 653 | Hydraulic machinery | 5 | 26 | 92 | 207 |
| 653 | Chemical structure | 4 | 26 | 470 | 800 |
| 656 | Law | 4 | 25 | 1580 | 1396 |
| 656 | Optoelectronics | 5 | 25 | 435 | 781 |
| 656 | Swarm Intelligence | 1 | 25 | 599 | 681 |
| 656 | Solitons | 2 | 25 | 1488 | 1888 |
| 656 | Fractals | 2 | 25 | 1719 | 2052 |
| 656 | Chaos | 2 | 25 | 1488 | 1888 |
| 656 | Mitochondria | 1 | 25 | 810 | 908 |
| 656 | economic analysis | 2 | 25 | 370 | 548 |
| 656 | Nervous system | 3 | 25 | 3153 | 5034 |
| 665 | Medical Technology | 1 | 24 | 4049 | 4008 |
| 665 | Sonochemistry | 2 | 24 | 866 | 1691 |
| 665 | Medical innovations | 1 | 24 | 2251 | 3125 |
| 665 | Microwaves | 3 | 24 | 1326 | 1396 |
| 669 | Geriatric Psychiatry | 1 | 23 | 2286 | 2462 |
| 669 | Pharmaceutical Technology | 2 | 23 | 2185 | 3066 |
| 669 | Educational Psychology | 6 | 23 | 1114 | 2465 |
| 669 | Diagnostic Imaging | 5 | 23 | 2109 | 3917 |
| 669 | Rheology | 1 | 23 | 1199 | 1183 |
| 669 | Food texture | 1 | 23 | 398 | 451 |
| 669 | Entropy | 4 | 23 | 1075 | 1875 |
| 669 | Radioisotopes | 2 | 23 | 1923 | 2091 |
| 669 | natural products | 6 | 23 | 1470 | 2978 |
| 669 | primary prevention | 2 | 23 | 673 | 1160 |
| 669 | catalytic activity | 2 | 23 | 864 | 1316 |
| 669 | biological agents | 6 | 23 | 469 | 641 |
| 681 | Geotechnical Engineering | 2 | 22 | 755 | 982 |
| 681 | Animal Behavior | 1 | 22 | 3476 | 3959 |
| 681 | Neural circuitry | 3 | 22 | 2268 | 3728 |
| 681 | Protozoa | 1 | 22 | 915 | 1022 |
| 681 | Vision | 1 | 22 | 1289 | 1521 |
| 686 | Petroleum Engineering | 1 | 21 | 1434 | 1466 |
| 686 | Land Use Planning | 2 | 21 | 529 | 898 |
| 686 | Nuclear Chemistry | 5 | 21 | 1064 | 1771 |
| 686 | child abuse | 1 | 21 | 1708 | 1998 |
| 686 | Europe | 3 | 21 | 4267 | 5732 |
| 691 | Institutional Economics | 4 | 20 | 67 | 211 |
| 691 | Horticulture | 1 | 20 | 1571 | 1501 |
| 691 | Medical Physics | 4 | 20 | 1867 | 3042 |
| 691 | Evolutionary economics | 4 | 20 | 135 | 386 |
| 691 | Coding Theory | 5 | 20 | 281 | 525 |
| 696 | Pharmaceutical Chemistry | 5 | 19 | 3973 | 7063 |
| 696 | Kalman Filtering | 2 | 19 | 186 | 187 |
| 696 | Travel | 3 | 19 | 1150 | 2035 |
| 696 | Electron Microscopy | 1 | 19 | 890 | 921 |
| 696 | software | 2 | 19 | 1452 | 2373 |
| 701 | Regional Economics | 1 | 18 | 910 | 951 |
| 701 | Computational Linguistics | 4 | 18 | 499 | 968 |
| 701 | mutation | 2 | 18 | 997 | 1728 |
| 701 | Cognitive Science | 4 | 18 | 1546 | 3253 |
| 701 | Thin Films | 3 | 18 | 720 | 1169 |
| 701 | Marine invertebrates | 2 | 18 | 336 | 495 |
| 701 | Investment analysis | 1 | 18 | 1570 | 1578 |
| 701 | Quality of life | 2 | 18 | 2375 | 3818 |
| 701 | Europa | 1 | 18 | 1034 | 1085 |
| 710 | Materials Engineering | 2 | 17 | 1111 | 1480 |
| 710 | Economic Geology | 3 | 17 | 30 | 36 |
| 710 | Restoration Ecology | 1 | 17 | 980 | 1159 |
| 710 | Boundary Value Problems | 3 | 17 | 433 | 578 |
| 710 | Antenna Arrays | 3 | 17 | 156 | 275 |
| 710 | Magnetism | 8 | 17 | 68 | 84 |
| 710 | Decision making | 2 | 17 | 2335 | 3461 |
| 717 | Epidemiology | 4 | 16 | 4448 | 8180 |
| 717 | Aerospace Engineering | 2 | 16 | 508 | 627 |
| 717 | Algebra | 9 | 16 | 1084 | 1771 |
| 717 | Nanoelectronics | 4 | 16 | 902 | 1598 |
| 717 | Diffraction | 2 | 16 | 216 | 272 |
| 717 | Phylogenetics | 2 | 16 | 160 | 306 |
| 717 | Neuromuscular diseases | 3 | 16 | 883 | 1756 |
| 717 | Southeast Asia | 4 | 16 | 386 | 757 |
| 717 | Muscles | 3 | 16 | 1158 | 2332 |
| 726 | Urology | 1 | 15 | 3504 | 3881 |
| 726 | Bifurcation Theory | 3 | 15 | 737 | 1216 |
| 726 | mycoses | 2 | 15 | 1364 | 2354 |
| 726 | construction | 3 | 15 | 210 | 542 |
| 726 | International Business | 3 | 15 | 167 | 511 |
| 726 | Fungi | 2 | 15 | 1494 | 2355 |
| 726 | Behavior | 1 | 15 | 5974 | 7165 |
| 726 | Radiation effects | 2 | 15 | 949 | 1724 |
| 726 | Exercise | 2 | 15 | 1971 | 2635 |
| 735 | Turbulence | 1 | 14 | 500 | 571 |
| 735 | Mechanics | 3 | 14 | 1634 | 2386 |
| 735 | health services | 2 | 14 | 1760 | 2871 |
| 735 | Informatics | 3 | 14 | 1052 | 2122 |
| 735 | Muscle contraction | 1 | 14 | 733 | 553 |
| 740 | Fuzzy Logic | 1 | 13 | 294 | 363 |
| 740 | Machine Learning | 1 | 13 | 827 | 929 |
| 740 | Ecophysiology | 1 | 13 | 587 | 792 |
| 740 | Microbial Metabolism | 1 | 13 | 486 | 852 |
| 740 | Aviation | 1 | 13 | 243 | 243 |
| 740 | Microbiota | 1 | 13 | 182 | 317 |
| 740 | mammals | 2 | 13 | 1617 | 2393 |
| 740 | Birds | 4 | 13 | 1291 | 2134 |
| 748 | Ecological Genetics | 2 | 12 | 1006 | 1620 |
| 748 | Special Education | 22 | 12 | 220 | 1550 |
| 748 | Internet of Things | 1 | 12 | 1240 | 1554 |
| 748 | Conservation Biology | 2 | 12 | 1743 | 2806 |
| 748 | Sports Medicine | 1 | 12 | 4673 | 4669 |
| 748 | Radiation Protection | 1 | 12 | 1547 | 1395 |
| 748 | Electronic Packaging | 1 | 12 | 376 | 400 |
| 748 | Adsorption | 1 | 12 | 485 | 613 |
| 748 | Soil dynamics | 1 | 12 | 871 | 1147 |
| 748 | Immunotoxicology | 1 | 12 | 770 | 1022 |
| 748 | Mutagenesis | 1 | 12 | 1092 | 1454 |
| 748 | Alloys | 2 | 12 | 418 | 532 |
| 748 | mutagens | 1 | 12 | 1727 | 2431 |
| 748 | internet | 1 | 12 | 2476 | 2731 |
| 762 | Heterocyclic chemistry | 1 | 11 | 1158 | 1187 |
| 762 | Molecular recognition | 1 | 11 | 554 | 860 |
| 762 | Discrete geometry | 2 | 11 | 375 | 507 |
| 762 | Plant hormones | 1 | 11 | 699 | 1034 |
| 762 | isomerism | 3 | 11 | 375 | 1004 |
| 762 | labor | 1 | 11 | 799 | 743 |
| 762 | working class | 1 | 11 | 467 | 524 |
| 762 | textile fibers | 6 | 11 | 332 | 1125 |
| 762 | Structure-activity relationship | 1 | 11 | 1012 | 1162 |
| 762 | Chirality | 3 | 11 | 375 | 1004 |
| 772 | Occupational Health | 2 | 10 | 1850 | 2790 |
| 772 | Highway Engineering | 2 | 10 | 555 | 993 |
| 772 | Chemical safety | 2 | 10 | 67 | 81 |
| 772 | Biological productivity | 1 | 10 | 93 | 104 |
| 772 | computer networks | 3 | 10 | 2804 | 4574 |
| 772 | Semiconductor industry | 2 | 10 | 954 | 1516 |
| 772 | biomedicine | 1 | 10 | 2045 | 2821 |
| 772 | international cooperation | 1 | 10 | 1332 | 1768 |
| 780 | Public Policy | 3 | 9 | 2260 | 4824 |
| 780 | Systems Analysis | 3 | 9 | 1316 | 2862 |
| 780 | Plant Morphology | 2 | 9 | 845 | 1530 |
| 780 | Control Theory | 2 | 9 | 2290 | 3093 |
| 780 | Microeconomics | 1 | 9 | 684 | 762 |
| 780 | Indoor air quality | 1 | 9 | 237 | 327 |
| 780 | Air Conditioning | 1 | 9 | 454 | 585 |
| 780 | Ornithology | 1 | 9 | 1798 | 2017 |
| 780 | Continental shelf | 1 | 9 | 779 | 1144 |
| 780 | plant molecular biology | 1 | 9 | 2662 | 3667 |
| 780 | color | 2 | 9 | 421 | 786 |
| 780 | heating | 1 | 9 | 363 | 507 |
| 780 | health planning | 1 | 9 | 4267 | 5284 |
| 780 | Cancer | 2 | 9 | 5303 | 7787 |
| 780 | Plant cells | 1 | 9 | 1930 | 2844 |
| 780 | cosmetics | 2 | 9 | 347 | 801 |
| 796 | Traffic Engineering | 2 | 8 | 575 | 1198 |
| 796 | Telecommunication Systems | 2 | 8 | 2171 | 3163 |
| 796 | Acoustics | 3 | 8 | 308 | 471 |
| 796 | Human-Computer Interaction | 2 | 8 | 2191 | 3825 |
| 796 | Knot Theory | 2 | 8 | 316 | 370 |
| 796 | Political Participation | 1 | 8 | 625 | 811 |
| 796 | Chromosome mapping | 1 | 8 | 3750 | 5126 |
| 796 | election law | 1 | 8 | 465 | 623 |
| 796 | Sound | 3 | 8 | 1027 | 1744 |
| 796 | Elections | 1 | 8 | 623 | 734 |
| 796 | gene mapping | 1 | 8 | 4046 | 5477 |
| 796 | Voting | 1 | 8 | 425 | 591 |
| 808 | Education | 2 | 7 | 5796 | 7525 |
| 808 | Automation | 1 | 7 | 3237 | 3949 |
| 808 | Organizational Behavior | 3 | 7 | 644 | 1429 |
| 808 | Career development | 1 | 7 | 875 | 1192 |
| 808 | Industrial Ecology | 1 | 7 | 418 | 822 |
| 808 | Knowledge management | 1 | 7 | 1504 | 1702 |
| 808 | Adaptive control systems | 1 | 7 | 1145 | 1501 |
| 808 | heredity | 1 | 7 | 1521 | 2080 |
| 808 | Memory | 3 | 7 | 2535 | 5067 |
| 808 | Attention | 3 | 7 | 2458 | 4983 |
| 808 | Educational evaluation | 1 | 7 | 404 | 538 |
| 819 | Radiology | 2 | 6 | 2585 | 3937 |
| 819 | Database Management | 1 | 6 | 1472 | 2024 |
| 819 | Physical Geography | 1 | 6 | 1199 | 1520 |
| 819 | economic indicators | 1 | 6 | 266 | 435 |
| 819 | Magnetohydrodynamics | 3 | 6 | 341 | 625 |
| 819 | Combinatorial optimization | 1 | 6 | 1002 | 1190 |
| 819 | Flow Visualization | 2 | 6 | 97 | 106 |
| 819 | Coatings | 12 | 6 | 42 | 218 |
| 819 | Machining | 1 | 6 | 323 | 505 |
| 819 | Wind power | 4 | 6 | 262 | 1010 |
| 819 | Roads | 1 | 6 | 1407 | 1750 |
| 819 | Chromosomes | 1 | 6 | 1959 | 2831 |
| 819 | Learning | 1 | 6 | 2659 | 3579 |
| 819 | winds | 4 | 6 | 82 | 418 |
| 819 | smart structures | 1 | 6 | 276 | 312 |
| 819 | rehabilitation | 1 | 6 | 4377 | 5718 |
| 819 | Heterocyclic compounds | 1 | 6 | 1873 | 2323 |
| 819 | Autism | 1 | 6 | 1454 | 2153 |
| 837 | Information Systems | 1 | 5 | 3096 | 4342 |
| 837 | Remote Sensing | 2 | 5 | 2196 | 3414 |
| 837 | Virtual reality | 1 | 5 | 824 | 1252 |
| 837 | Research Design | 1 | 5 | 2751 | 4056 |
| 837 | Photogrammetry | 2 | 5 | 1361 | 1746 |
| 837 | Government policy | 1 | 5 | 375 | 671 |
| 837 | Library Science | 1 | 5 | 2703 | 2731 |
| 837 | Cement | 11 | 5 | 286 | 1639 |
| 837 | Heat | 1 | 5 | 161 | 173 |
| 846 | Mobile Computing | 1 | 4 | 2283 | 2843 |
| 846 | Medical Microbiology | 1 | 4 | 4532 | 6384 |
| 846 | cosmic rays | 1 | 4 | 1006 | 1439 |
| 846 | Multivariate Analysis | 2 | 4 | 693 | 1341 |
| 846 | Law and Economics | 1 | 4 | 594 | 818 |
| 846 | Computational Complexity | 2 | 4 | 1513 | 2672 |
| 846 | Pesticides | 1 | 4 | 1437 | 2219 |
| 846 | foreign exchange | 1 | 4 | 694 | 1102 |
| 846 | sustainable forestry | 1 | 4 | 320 | 593 |
| 846 | Communist countries | 1 | 4 | 588 | 803 |
| 846 | Groundwater | 1 | 4 | 1373 | 2051 |
| 846 | Yeast | 1 | 4 | 931 | 1443 |
| 846 | econometric models | 1 | 4 | 1171 | 1743 |
| 859 | Humanities | 1 | 3 | 3877 | 4696 |
| 859 | Arts | 3 | 3 | 589 | 1035 |
| 859 | Political Science | 1 | 3 | 3299 | 3673 |
| 859 | Health Services Administration | 1 | 3 | 2610 | 3965 |
| 859 | emergency management | 1 | 3 | 1923 | 3178 |
| 859 | Plasma chemistry | 1 | 3 | 830 | 1373 |
| 859 | business cycles | 1 | 3 | 90 | 137 |
| 859 | Simulation Methods | 1 | 3 | 2078 | 3000 |
| 859 | Art | 3 | 3 | 523 | 703 |
| 859 | Public Choice | 1 | 3 | 701 | 1059 |
| 859 | Causality | 1 | 3 | 51 | 112 |
| 859 | Group decision making | 1 | 3 | 936 | 1439 |
| 859 | Causation | 1 | 3 | 51 | 112 |
| 859 | Plasma polymerization | 1 | 3 | 579 | 973 |
| 859 | population policy | 1 | 3 | 342 | 662 |
| 859 | fishing industry | 2 | 3 | 286 | 773 |
| 859 | urban forestry | 1 | 3 | 655 | 1196 |
| 859 | energy development | 1 | 3 | 1920 | 3055 |
| 859 | Population | 1 | 3 | 2266 | 3257 |
| 859 | Culture | 1 | 3 | 2126 | 2789 |
| 859 | conflict management | 1 | 3 | 560 | 915 |
| 859 | sports injuries | 1 | 3 | 1212 | 1902 |
| 859 | Ticks | 1 | 3 | 707 | 1151 |
| 859 | Acari | 1 | 3 | 626 | 1091 |
| 883 | Radiologic Technology | 1 | 2 | 407 | 727 |
| 883 | Photography | 2 | 2 | 2709 | 3517 |
| 883 | Hypertension | 2 | 2 | 2493 | 4384 |
| 883 | Interventional Radiology | 1 | 2 | 407 | 727 |
| 883 | Space telescopes | 1 | 2 | 397 | 582 |
| 883 | Organizational change | 1 | 2 | 1479 | 2408 |
| 883 | technology transfer | 1 | 2 | 658 | 1143 |
| 883 | taxation | 1 | 2 | 530 | 936 |
| 883 | Cross-Cultural Studies | 1 | 2 | 1499 | 2500 |
| 883 | Genetic databases | 1 | 2 | 140 | 372 |
| 883 | textile machinery | 2 | 2 | 110 | 134 |
| 883 | Graphene | 1 | 2 | 299 | 650 |
| 883 | Interventional Radiography | 1 | 2 | 407 | 727 |
| 883 | Endoscopic Surgery | 1 | 2 | 407 | 727 |
| 883 | Economic research | 1 | 2 | 15 | 46 |
| 883 | Teaching | 3 | 2 | 2113 | 4820 |
| 883 | organizational effectiveness | 1 | 2 | 946 | 1579 |
| 883 | cross-cultural comparison | 1 | 2 | 1210 | 2101 |
| 883 | Pakistan | 1 | 2 | 838 | 1021 |
| 883 | drug development | 1 | 2 | 2340 | 3764 |
| 883 | Electromagnetic fields | 1 | 2 | 731 | 1135 |
| 883 | violence | 1 | 2 | 1878 | 3007 |
| 883 | sex crimes | 1 | 2 | 1215 | 2014 |
| 906 | Computer Engineering | 1 | 1 | 1805 | 2826 |
| 906 | Biostatistics | 1 | 1 | 479 | 834 |
| 906 | Ergonomics | 1 | 1 | 2128 | 3074 |
| 906 | Intelligent Transportation Systems | 1 | 1 | 1394 | 2242 |
| 906 | Health Policy | 1 | 1 | 5017 | 7461 |
| 906 | Comparative Physiology | 1 | 1 | 1583 | 2292 |
| 906 | Food Microbiology | 3 | 1 | 1547 | 3861 |
| 906 | Ichthyology | 1 | 1 | 1030 | 1621 |
| 906 | Artificial Organs | 1 | 1 | 1465 | 2187 |
| 906 | Computational Intelligence | 1 | 1 | 2051 | 3187 |
| 906 | bioclimatology | 1 | 1 | 1945 | 3152 |
| 906 | Soil stabilization | 1 | 1 | 137 | 323 |
| 906 | Radio wave propagation | 4 | 1 | 801 | 2379 |
| 906 | Polymer Networks | 1 | 1 | 42 | 119 |
| 906 | Polymer Colloids | 1 | 1 | 42 | 119 |
| 906 | Elderly | 4 | 1 | 1385 | 3125 |
| 906 | Biometrics | 1 | 1 | 2136 | 3168 |
| 906 | Imaging systems | 1 | 1 | 1680 | 2674 |
| 906 | administrative agencies | 1 | 1 | 606 | 983 |
| 906 | Climate | 1 | 1 | 1348 | 2415 |
| 906 | weather | 1 | 1 | 1252 | 2309 |
| 906 | Approximation Theory | 1 | 1 | 799 | 1130 |
| 906 | Growth | 1 | 1 | 2248 | 3386 |
| 906 | Capital asset pricing model | 1 | 1 | 144 | 303 |
| 930 | Literature | 1 | 0 | 1685 | 1687 |
| 930 | Pediatrics | 1 | 0 | 5114 | 7434 |
| 930 | Insurance Law | 1 | 0 | 71 | 36 |
| 930 | Mathematics Education | 1 | 0 | 892 | 1384 |
| 930 | Cartography | 1 | 0 | 1202 | 1806 |
| 930 | Pediatric Neurology | 1 | 0 | 2087 | 3208 |
| 930 | Religion | 6 | 0 | 856 | 2489 |
| 930 | Functional equations | 1 | 0 | 539 | 955 |
| 930 | diffusion | 3 | 0 | 405 | 1089 |
| 930 | Drug design | 1 | 0 | 3440 | 5203 |
| 930 | Health | 1 | 0 | 4857 | 7532 |
| 930 | Child welfare | 1 | 0 | 2335 | 4004 |
| 930 | Sexual health | 1 | 0 | 1644 | 2339 |
| 930 | Social policy | 2 | 0 | 1502 | 3427 |
| 930 | Business Ethics | 1 | 0 | 1648 | 2640 |
| 930 | optical instruments | 1 | 0 | 815 | 1342 |
| 930 | income | 1 | 0 | 415 | 782 |
| 930 | Buddhism | 6 | 0 | 97 | 285 |
| 930 | Latin America | 1 | 0 | 2436 | 3356 |
| 930 | Earthquakes | 1 | 0 | 799 | 1340 |
| 930 | Input-output analysis | 1 | 0 | 577 | 1022 |
| 930 | Adolescent | 1 | 0 | 4460 | 6600 |
| 930 | Wealth | 1 | 0 | 415 | 782 |
| 930 | brewing | 1 | 0 | 548 | 915 |
| 930 | residential treatment | 1 | 0 | 364 | 761 |
| 930 | Insects | 1 | 0 | 2743 | 4017 |
| 930 | India | 7 | 0 | 1275 | 5328 |
| 930 | data protection | 1 | 0 | 1205 | 2085 |
| 930 | Grasslands | 1 | 0 | 175 | 382 |