| 1 | Astrophysics | 4,048 | 333.3K | 22 | 15 |
| 2 | Astronomy | 4,787 | 321.9K | 11 | 9 |
| 3 | Geophysics | 4,249 | 224.7K | 8 | 7 |
| 4 | Spectrum analysis | 3,032 | 223.8K | 17 | 11 |
| 5 | Physics | 1,390 | 138.9K | 338 | 241 |
| 6 | Planets | 2,221 | 127.0K | 4 | 4 |
| 7 | Science | 771 | 117.8K | 475 | 260 |
| 8 | Biology | 697 | 104.9K | 509 | 285 |
| 9 | Natural history | 512 | 88.5K | 105 | 178 |
| 10 | Solar System | 1,732 | 80.0K | 2 | 3 |
| 11 | Atmospheric Physics | 897 | 44.4K | 9 | 21 |
| 12 | Earth Sciences | 415 | 29.8K | 48 | 34 |
| 13 | Atmospheric Chemistry | 508 | 28.9K | 16 | 25 |
| 14 | Radiation | 278 | 27.8K | 24 | 1 |
| 15 | radiative transfer | 266 | 27.6K | 4 | 1 |
| 16 | Optics | 1,568 | 27.5K | 26 | 51 |
| 17 | Meteorology | 488 | 26.2K | 74 | 80 |
| 18 | Nuclear Physics | 526 | 25.9K | 435 | 325 |
| 19 | Chemistry | 312 | 22.9K | 1250 | 819 |
| 20 | Climatology | 304 | 17.3K | 63 | 68 |
| 21 | Quantum Gravity | 324 | 17.0K | 193 | 141 |
| 22 | Geology | 316 | 15.7K | 186 | 143 |
| 23 | atmospheric models | 340 | 15.1K | 5 | 12 |
| 24 | Oceanography | 254 | 13.9K | 103 | 92 |
| 25 | Ecology | 188 | 11.8K | 780 | 695 |
| 26 | Hydrology | 141 | 11.6K | 191 | 75 |
| 27 | exobiology | 206 | 11.4K | 3 | 3 |
| 28 | Statistical physics | 197 | 10.3K | 470 | 235 |
| 29 | Technology | 131 | 10.1K | 411 | 120 |
| 30 | Water | 100 | 9.8K | 279 | 149 |
| 31 | Molecular Spectroscopy | 218 | 9.8K | 18 | 6 |
| 32 | water supply | 99 | 9.7K | 68 | 33 |
| 33 | Microbiology | 134 | 9.3K | 1199 | 938 |
| 34 | Geochemistry | 204 | 9.3K | 159 | 164 |
| 35 | Solid State Physics | 188 | 9.2K | 641 | 442 |
| 36 | Materials | 106 | 9.1K | 1382 | 740 |
| 37 | Robotics | 178 | 9.0K | 35 | 16 |
| 38 | Condensed Matter | 171 | 8.8K | 648 | 461 |
| 39 | Environmental Health | 108 | 8.4K | 802 | 497 |
| 40 | Photonics | 38 | 8.1K | 429 | 106 |
| 41 | Environment | 90 | 7.5K | 920 | 800 |
| 42 | Photography | 1,139 | 7.4K | 4 | 3 |
| 43 | Light | 22 | 7.3K | 283 | 58 |
| 44 | Control Theory | 207 | 7.0K | 50 | 34 |
| 45 | Electronics | 213 | 6.9K | 284 | 148 |
| 46 | cryosphere | 77 | 5.8K | 19 | 11 |
| 47 | Pollution | 64 | 5.8K | 1360 | 855 |
| 48 | Meteorites | 128 | 5.7K | 99 | 136 |
| 49 | Electrochemistry | 188 | 5.6K | 409 | 353 |
| 50 | Geomagnetism | 80 | 5.5K | 64 | 18 |
| 51 | extraterrestrial environment | 343 | 5.4K | 2 | 3 |
| 52 | astronomical phenomena | 330 | 5.1K | 2 | 3 |
| 53 | Nanotechnology | 41 | 5.0K | 1788 | 919 |
| 54 | Microbial Ecology | 53 | 4.7K | 493 | 370 |
| 55 | Artificial Intelligence | 117 | 4.6K | 385 | 278 |
| 56 | Materials Science | 277 | 4.6K | 373 | 776 |
| 57 | Biodiversity | 65 | 4.4K | 302 | 209 |
| 58 | Engineering | 71 | 4.2K | 725 | 206 |
| 59 | Planetary Science | 131 | 4.1K | 22 | 21 |
| 60 | Sun | 76 | 4.1K | 59 | 41 |
| 61 | Mathematics | 83 | 3.9K | 1573 | 605 |
| 62 | Atomic spectroscopy | 40 | 3.8K | 191 | 29 |
| 63 | Dynamics | 32 | 3.7K | 387 | 25 |
| 64 | Biodiversity conservation | 46 | 3.7K | 389 | 418 |
| 65 | Polymers | 98 | 3.6K | 983 | 782 |
| 66 | Biotechnology | 40 | 3.6K | 2214 | 1368 |
| 67 | Climate change | 41 | 3.6K | 199 | 341 |
| 67 | Eutrophication | 41 | 3.6K | 193 | 340 |
| 69 | Marine Meteorology | 74 | 3.6K | 53 | 43 |
| 70 | Measurement | 21 | 3.5K | 325 | 26 |
| 71 | Geodesy | 66 | 3.5K | 43 | 9 |
| 72 | Biogeochemistry | 59 | 3.4K | 169 | 183 |
| 73 | polymerization | 91 | 3.4K | 839 | 661 |
| 74 | Quantum Optics | 35 | 3.4K | 141 | 25 |
| 75 | Bioengineering | 40 | 3.2K | 1358 | 1002 |
| 76 | Laser Spectroscopy | 32 | 3.2K | 134 | 24 |
| 77 | Celestial Mechanics | 100 | 3.2K | 3 | 1 |
| 78 | Biogeochemical cycles | 41 | 3.1K | 54 | 73 |
| 79 | Molecular Biology | 46 | 2.9K | 3160 | 2552 |
| 80 | Marine Biology | 35 | 2.9K | 889 | 442 |
| 81 | Radio wave propagation | 81 | 2.9K | 23 | 3 |
| 82 | Nanostructures | 8 | 2.8K | 1606 | 292 |
| 83 | Microorganisms | 40 | 2.8K | 189 | 198 |
| 84 | Autonomous robots | 37 | 2.7K | 6 | 9 |
| 85 | geological modeling | 42 | 2.6K | 39 | 36 |
| 86 | Geochemical Modeling | 41 | 2.6K | 33 | 36 |
| 87 | Metallurgy | 56 | 2.4K | 522 | 391 |
| 88 | Geobiology | 73 | 2.3K | 9 | 13 |
| 89 | Molecules | 74 | 2.2K | 199 | 189 |
| 90 | Climate | 30 | 2.2K | 60 | 45 |
| 91 | Environmental Microbiology | 24 | 2.2K | 391 | 272 |
| 92 | Environmental Engineering | 38 | 2.2K | 1075 | 818 |
| 93 | Computer Vision | 29 | 2.2K | 255 | 203 |
| 94 | United States | 46 | 2.0K | 1505 | 983 |
| 95 | Metals | 46 | 2.0K | 561 | 419 |
| 96 | Electrical Engineering | 288 | 2.0K | 185 | 216 |
| 97 | Hydrometeorology | 41 | 2.0K | 19 | 42 |
| 98 | Soil Science | 16 | 2.0K | 840 | 313 |
| 99 | Botany | 22 | 2.0K | 1958 | 1213 |
| 100 | Fluid Mechanics | 52 | 2.0K | 346 | 214 |
| 101 | Space telescopes | 131 | 1.9K | 3 | 28 |
| 102 | Cosmology | 35 | 1.8K | 385 | 134 |
| 103 | Agriculture | 25 | 1.8K | 790 | 368 |
| 104 | air | 22 | 1.8K | 35 | 35 |
| 105 | sanitation | 14 | 1.7K | 816 | 579 |
| 106 | Smart Materials | 20 | 1.7K | 227 | 65 |
| 107 | Optical materials | 15 | 1.7K | 1448 | 723 |
| 108 | Statistical Mechanics | 39 | 1.7K | 202 | 78 |
| 108 | Magnetohydrodynamics | 39 | 1.7K | 72 | 52 |
| 110 | Medicine | 33 | 1.7K | 5043 | 4167 |
| 111 | Biomedical Engineering | 47 | 1.6K | 1373 | 1280 |
| 112 | soil microbiology | 19 | 1.6K | 585 | 454 |
| 113 | atmosphere | 24 | 1.6K | 179 | 77 |
| 114 | miniaturization | 18 | 1.5K | 815 | 616 |
| 115 | Cybernetics | 18 | 1.5K | 468 | 195 |
| 116 | Microelectronics | 30 | 1.5K | 593 | 562 |
| 117 | Mathematical Physics | 30 | 1.5K | 1131 | 598 |
| 118 | Structural design | 8 | 1.5K | 448 | 57 |
| 119 | Environmental monitoring | 23 | 1.5K | 1635 | 1163 |
| 120 | Moon | 85 | 1.5K | 2 | 4 |
| 121 | Research | 30 | 1.4K | 4292 | 3355 |
| 122 | Medical Microbiology | 18 | 1.4K | 1238 | 922 |
| 123 | Biochemical Engineering | 2 | 1.4K | 4549 | 1515 |
| 123 | Combustion | 57 | 1.4K | 198 | 237 |
| 125 | Geography | 13 | 1.4K | 1292 | 480 |
| 126 | Evolution | 22 | 1.4K | 767 | 683 |
| 127 | Computer Graphics | 16 | 1.4K | 720 | 285 |
| 128 | global environmental change | 24 | 1.4K | 184 | 200 |
| 129 | actuators | 22 | 1.3K | 804 | 557 |
| 129 | transducers | 22 | 1.3K | 804 | 557 |
| 131 | Biochemistry | 30 | 1.3K | 4508 | 3860 |
| 132 | Seismology | 32 | 1.3K | 142 | 100 |
| 133 | biological evolution | 21 | 1.3K | 899 | 860 |
| 134 | Automation | 21 | 1.3K | 682 | 410 |
| 135 | Analytical Chemistry | 41 | 1.2K | 1591 | 1533 |
| 136 | Nuclear Engineering | 47 | 1.2K | 294 | 153 |
| 137 | Information Theory | 15 | 1.2K | 495 | 171 |
| 138 | Mineralogy | 49 | 1.2K | 308 | 379 |
| 139 | Glaciology | 27 | 1.2K | 39 | 28 |
| 139 | glaciers | 27 | 1.2K | 35 | 25 |
| 141 | Hydrodynamics | 21 | 1.2K | 152 | 95 |
| 142 | Geodynamics | 27 | 1.2K | 245 | 237 |
| 143 | Remote Sensing | 61 | 1.2K | 128 | 118 |
| 144 | Image Processing | 26 | 1.1K | 571 | 485 |
| 145 | infrared radiation | 78 | 1.1K | 24 | 22 |
| 146 | Earthquakes | 29 | 1.1K | 79 | 37 |
| 147 | mass transfer | 26 | 1.1K | 517 | 396 |
| 148 | Machine Learning | 7 | 1.1K | 206 | 84 |
| 149 | Ocean Engineering | 34 | 1.1K | 442 | 401 |
| 150 | Biogeography | 13 | 1.0K | 513 | 405 |
| 151 | Multiphase Flow | 10 | 1.0K | 166 | 59 |
| 152 | optical instruments | 23 | 1.0K | 100 | 85 |
| 153 | Systems Engineering | 76 | 978 | 172 | 320 |
| 154 | Plant physiology | 6 | 950 | 1782 | 922 |
| 155 | Volcanoes | 16 | 939 | 91 | 57 |
| 156 | Ceramics | 34 | 925 | 366 | 381 |
| 156 | Glass | 34 | 925 | 270 | 335 |
| 156 | pottery | 34 | 925 | 263 | 326 |
| 159 | Signal Processing | 13 | 911 | 989 | 395 |
| 160 | Physical Chemistry | 29 | 897 | 807 | 874 |
| 161 | Telecommunication | 33 | 895 | 567 | 388 |
| 162 | Medical Laboratory Science | 19 | 880 | 850 | 723 |
| 163 | Colloids | 15 | 867 | 2147 | 1638 |
| 164 | Biophysics | 31 | 859 | 2681 | 2658 |
| 165 | Electromagnetism | 9 | 842 | 422 | 95 |
| 166 | Environmental Policy | 14 | 839 | 1698 | 1450 |
| 167 | Biocompatible Materials | 10 | 830 | 2641 | 2024 |
| 168 | Sustainable Development | 11 | 823 | 1099 | 629 |
| 169 | Geomorphology | 10 | 817 | 862 | 500 |
| 170 | Data Mining | 23 | 804 | 376 | 523 |
| 170 | Petrology | 18 | 804 | 454 | 414 |
| 172 | Magnetic Materials | 4 | 783 | 1484 | 435 |
| 173 | Semiconductors | 46 | 781 | 404 | 430 |
| 174 | Hydraulic Engineering | 10 | 766 | 550 | 225 |
| 175 | System analysis | 30 | 763 | 695 | 639 |
| 176 | Computational Biology | 7 | 762 | 2503 | 1196 |
| 177 | data collection | 18 | 757 | 258 | 391 |
| 178 | Bioinformatics | 6 | 753 | 1902 | 950 |
| 179 | space environment | 32 | 752 | 47 | 56 |
| 180 | Biomechanics | 30 | 745 | 366 | 495 |
| 181 | Natural resources | 8 | 742 | 479 | 222 |
| 182 | Solar Energy | 70 | 727 | 109 | 583 |
| 182 | Nonlinear Dynamics | 22 | 727 | 993 | 863 |
| 184 | Cosmochemistry | 51 | 719 | 69 | 297 |
| 185 | Chemical Engineering | 22 | 717 | 2248 | 2289 |
| 186 | Plant Ecology | 8 | 699 | 1291 | 860 |
| 187 | Solid State Chemistry | 19 | 686 | 1220 | 848 |
| 187 | sustainability | 11 | 686 | 315 | 321 |
| 189 | genome | 4 | 670 | 1828 | 1062 |
| 190 | radar | 5 | 668 | 161 | 31 |
| 191 | Developing countries | 18 | 645 | 951 | 758 |
| 192 | Kinetics | 20 | 620 | 92 | 60 |
| 193 | Carbon | 24 | 615 | 406 | 711 |
| 194 | plant molecular biology | 4 | 604 | 1540 | 1029 |
| 194 | Plants | 4 | 604 | 2261 | 1124 |
| 196 | Environmental Chemistry | 10 | 603 | 1331 | 1157 |
| 197 | Freezing | 56 | 586 | 28 | 45 |
| 198 | Mass Spectrometry | 17 | 581 | 544 | 470 |
| 199 | Radio | 33 | 571 | 140 | 156 |
| 200 | Neural circuitry | 15 | 570 | 846 | 767 |
| 201 | Surface Chemistry | 15 | 563 | 2213 | 1955 |
| 202 | Nanostructured Materials | 15 | 561 | 1850 | 1678 |
| 203 | Genetics | 10 | 558 | 3040 | 2843 |
| 204 | Microwaves | 37 | 557 | 238 | 150 |
| 205 | Rock deformation | 14 | 526 | 38 | 35 |
| 206 | Genomics | 5 | 513 | 3404 | 1915 |
| 207 | Chemical kinetics | 18 | 483 | 193 | 85 |
| 208 | Geographic information systems | 9 | 482 | 600 | 201 |
| 209 | Computational Complexity | 4 | 472 | 1049 | 139 |
| 210 | nuclear astrophysics | 13 | 466 | 194 | 214 |
| 211 | environmental protection | 15 | 457 | 1820 | 1916 |
| 212 | Software Engineering | 20 | 455 | 289 | 248 |
| 213 | Bioenergetics | 5 | 454 | 756 | 423 |
| 213 | Energy metabolism | 5 | 454 | 573 | 356 |
| 213 | cell membrane | 5 | 454 | 554 | 340 |
| 216 | Ultrasonics | 20 | 446 | 289 | 487 |
| 216 | Ultrasound | 20 | 446 | 135 | 185 |
| 218 | ecosystem | 10 | 443 | 821 | 874 |
| 219 | Ferroelectricity | 22 | 441 | 261 | 171 |
| 220 | Heat Exchangers | 4 | 440 | 1156 | 580 |
| 221 | greenhouse effect | 8 | 435 | 18 | 9 |
| 221 | Carbon dioxide | 8 | 435 | 18 | 9 |
| 223 | Continental shelf | 15 | 428 | 145 | 177 |
| 223 | Nervous system | 5 | 428 | 2554 | 1815 |
| 225 | Molecular Genetics | 4 | 425 | 2261 | 1335 |
| 226 | Sedimentology | 6 | 419 | 451 | 253 |
| 227 | Virology | 2 | 417 | 4538 | 2857 |
| 228 | Engineering Mathematics | 25 | 415 | 834 | 730 |
| 228 | Organelle biogenesis | 14 | 415 | 40 | 53 |
| 230 | Computer Science | 18 | 414 | 805 | 571 |
| 231 | Sound | 18 | 412 | 170 | 119 |
| 232 | Cytology | 3 | 404 | 5222 | 3517 |
| 232 | weather forecasting | 10 | 404 | 93 | 82 |
| 234 | Catalysis | 12 | 400 | 2372 | 2415 |
| 234 | Radio frequency | 20 | 400 | 44 | 72 |
| 236 | Statistics | 21 | 393 | 1229 | 1235 |
| 237 | Origin of life | 12 | 390 | 25 | 29 |
| 238 | Imaging systems | 10 | 386 | 283 | 100 |
| 239 | Cell Biology | 3 | 385 | 5043 | 3577 |
| 239 | Navigation | 24 | 385 | 68 | 89 |
| 241 | infrared technology | 28 | 381 | 34 | 20 |
| 242 | Renewable Energy Sources | 7 | 373 | 2046 | 2166 |
| 243 | Medical innovations | 2 | 366 | 1678 | 1182 |
| 243 | biomimicry | 2 | 366 | 207 | 44 |
| 245 | Visual Perception | 25 | 356 | 696 | 1128 |
| 245 | Perception | 25 | 356 | 793 | 1272 |
| 247 | Memory | 23 | 351 | 821 | 1308 |
| 247 | Attention | 23 | 351 | 762 | 1190 |
| 247 | mathematical analysis | 13 | 351 | 1509 | 930 |
| 250 | Forest Ecology | 6 | 347 | 871 | 665 |
| 250 | Forest Management | 6 | 347 | 818 | 611 |
| 252 | Fluid Dynamics | 14 | 346 | 548 | 535 |
| 253 | environmental pollution | 5 | 342 | 4328 | 3358 |
| 254 | Energy Policy | 6 | 337 | 2164 | 1961 |
| 255 | Physical Geography | 1 | 330 | 1199 | 189 |
| 256 | Systems Biology | 8 | 328 | 1161 | 871 |
| 256 | Quantum theory | 7 | 328 | 661 | 406 |
| 258 | Minerals | 6 | 319 | 546 | 275 |
| 259 | natural disasters | 13 | 316 | 526 | 680 |
| 260 | Conservation Biology | 2 | 314 | 1743 | 805 |
| 261 | Nanoparticles | 4 | 313 | 1964 | 1195 |
| 262 | Economic Development | 3 | 310 | 2089 | 1149 |
| 262 | Ceramic materials | 2 | 310 | 1887 | 621 |
| 264 | Mechanical Engineering | 30 | 299 | 803 | 1010 |
| 265 | Climate Change Mitigation | 4 | 297 | 23 | 60 |
| 265 | Global warming | 4 | 297 | 79 | 64 |
| 265 | sea level | 4 | 297 | 23 | 60 |
| 268 | plant communities | 1 | 293 | 1921 | 898 |
| 268 | Plant cells | 1 | 293 | 1930 | 1318 |
| 270 | Intelligent Control Systems | 15 | 287 | 337 | 249 |
| 271 | gene mapping | 3 | 286 | 2682 | 1820 |
| 272 | nucleic acids | 2 | 276 | 2582 | 1737 |
| 273 | Digital electronics | 10 | 274 | 111 | 31 |
| 273 | Bacteriology | 14 | 274 | 1073 | 1800 |
| 275 | Radiation effects | 13 | 272 | 190 | 394 |
| 276 | plankton | 2 | 270 | 330 | 100 |
| 277 | Immunology | 6 | 260 | 3656 | 3451 |
| 278 | energy resources | 5 | 255 | 1184 | 1385 |
| 278 | biological monitoring | 2 | 255 | 784 | 270 |
| 280 | Industrial Microbiology | 7 | 253 | 1493 | 1634 |
| 280 | lasers | 17 | 253 | 773 | 823 |
| 282 | Behavior | 1 | 251 | 5970 | 2865 |
| 283 | Wireless Communication Systems | 12 | 250 | 1119 | 933 |
| 284 | Electrophoresis | 17 | 244 | 715 | 1137 |
| 285 | Antibodies | 4 | 243 | 762 | 489 |
| 285 | Antigens | 4 | 243 | 1026 | 656 |
| 287 | Landscape Ecology | 2 | 240 | 707 | 352 |
| 288 | Systems Analysis | 4 | 233 | 1115 | 534 |
| 289 | Mechanics | 6 | 230 | 1079 | 593 |
| 290 | Composite Materials | 6 | 229 | 2294 | 2222 |
| 291 | polar regions | 6 | 226 | 532 | 402 |
| 292 | Neurology | 3 | 219 | 6579 | 4912 |
| 293 | Aerospace Engineering | 20 | 217 | 73 | 74 |
| 294 | emergency management | 7 | 213 | 540 | 484 |
| 295 | Photogrammetry | 17 | 205 | 264 | 138 |
| 296 | software | 9 | 201 | 493 | 739 |
| 297 | Pharmacology | 3 | 200 | 6677 | 4834 |
| 298 | Cognitive neuroscience | 1 | 198 | 1753 | 957 |
| 299 | mutation | 4 | 197 | 677 | 622 |
| 299 | Chromosomes | 4 | 197 | 1085 | 918 |
| 301 | Applied Sciences | 2 | 195 | 26 | 47 |
| 301 | Applied Mechanics | 2 | 195 | 26 | 47 |
| 303 | Quantum Communication | 1 | 193 | 413 | 162 |
| 304 | Combinatorial analysis | 11 | 188 | 618 | 427 |
| 304 | Molecular structure | 3 | 188 | 3047 | 1976 |
| 306 | Information Systems | 4 | 186 | 1511 | 1059 |
| 306 | Neurophysiology | 2 | 186 | 4037 | 2936 |
| 308 | Structural dynamics | 5 | 179 | 915 | 910 |
| 308 | Japan | 10 | 179 | 1367 | 1199 |
| 310 | Plasma devices | 7 | 176 | 201 | 221 |
| 311 | Immunochemistry | 4 | 175 | 1144 | 771 |
| 312 | Ecohydrology | 3 | 170 | 418 | 209 |
| 312 | Soil biology | 1 | 170 | 1615 | 1063 |
| 312 | Aquatic ecology | 3 | 170 | 1177 | 749 |
| 315 | Microstructure | 8 | 167 | 483 | 377 |
| 316 | Particle Physics | 6 | 154 | 651 | 478 |
| 317 | micromechanics | 4 | 153 | 548 | 446 |
| 318 | Algal blooms | 1 | 152 | 609 | 353 |
| 318 | computer networks | 14 | 152 | 1219 | 1793 |
| 318 | Cyanobacteria | 1 | 152 | 609 | 353 |
| 318 | microalgae | 1 | 152 | 609 | 353 |
| 322 | Computational Fluid Dynamics | 9 | 150 | 331 | 452 |
| 323 | Ergonomics | 11 | 149 | 595 | 743 |
| 323 | Numerical Analysis | 7 | 149 | 1856 | 1519 |
| 325 | Water quality management | 5 | 148 | 1645 | 1398 |
| 326 | solar cells | 8 | 147 | 549 | 1019 |
| 327 | Population Genetics | 2 | 146 | 1778 | 1451 |
| 327 | Molecular ecology | 2 | 146 | 1613 | 1477 |
| 329 | Telecommunication Systems | 10 | 144 | 911 | 1026 |
| 330 | Quality Control | 8 | 140 | 1177 | 1602 |
| 330 | Bifurcation Theory | 2 | 140 | 933 | 341 |
| 330 | fuel cells | 8 | 140 | 875 | 1376 |
| 330 | Microscopy | 7 | 140 | 1303 | 1183 |
| 334 | Nuclear Energy | 7 | 139 | 841 | 710 |
| 335 | Civil Engineering | 9 | 137 | 1097 | 793 |
| 335 | Pharmacokinetics | 2 | 137 | 1501 | 887 |
| 335 | Water pollution | 4 | 137 | 2832 | 2961 |
| 335 | Computer-Aided Design | 4 | 137 | 1259 | 955 |
| 335 | Marine Pollution | 4 | 137 | 1219 | 1333 |
| 340 | Nuclear Chemistry | 2 | 136 | 1649 | 712 |
| 340 | Radiochemistry | 2 | 136 | 1562 | 632 |
| 340 | Electronic Packaging | 8 | 136 | 86 | 98 |
| 343 | solar power | 5 | 134 | 697 | 970 |
| 344 | Logic Programming | 1 | 133 | 599 | 140 |
| 345 | Experimental Design | 6 | 132 | 192 | 277 |
| 346 | Computer Engineering | 18 | 123 | 127 | 451 |
| 346 | Number Theory | 3 | 123 | 983 | 317 |
| 348 | wind erosion | 3 | 121 | 100 | 131 |
| 349 | China | 6 | 118 | 2516 | 2621 |
| 350 | Operations Research | 6 | 117 | 1849 | 1949 |
| 350 | Nonlinear Optics | 4 | 117 | 236 | 125 |
| 352 | Electromagnetic waves | 14 | 116 | 39 | 135 |
| 352 | Detectors | 3 | 116 | 1133 | 470 |
| 354 | Medical Physics | 4 | 114 | 1850 | 1663 |
| 354 | System design | 13 | 114 | 57 | 195 |
| 356 | Zoology | 3 | 112 | 3185 | 2253 |
| 356 | Paleontology | 5 | 112 | 1232 | 1148 |
| 358 | Paleoceanography | 2 | 111 | 281 | 332 |
| 359 | Clinical Trials | 1 | 110 | 1438 | 557 |
| 359 | Regional Planning | 2 | 110 | 2201 | 1366 |
| 359 | Research Design | 1 | 110 | 2751 | 1430 |
| 359 | Fractals | 15 | 110 | 430 | 1023 |
| 363 | Superconductors | 11 | 109 | 358 | 492 |
| 364 | Urban Policy | 3 | 108 | 885 | 834 |
| 364 | Electrochemical Analysis | 2 | 108 | 2083 | 1504 |
| 366 | Superconductivity | 10 | 107 | 237 | 365 |
| 366 | Solitons | 14 | 107 | 365 | 944 |
| 366 | Chaos | 14 | 107 | 365 | 944 |
| 369 | Energy Storage | 8 | 104 | 844 | 1307 |
| 370 | Human-Computer Interaction | 8 | 103 | 984 | 1467 |
| 370 | hazard mitigation | 6 | 103 | 641 | 962 |
| 372 | Archaeology | 3 | 102 | 1624 | 1156 |
| 372 | bioclimatology | 6 | 102 | 683 | 952 |
| 372 | Sites | 3 | 102 | 651 | 759 |
| 375 | Virtual reality | 7 | 101 | 173 | 314 |
| 375 | Simulation | 3 | 101 | 207 | 215 |
| 375 | theoretical models | 3 | 101 | 207 | 215 |
| 378 | enzymes | 9 | 100 | 1031 | 1933 |
| 379 | Raman spectroscopy | 3 | 98 | 967 | 864 |
| 379 | Great Lakes | 5 | 98 | 199 | 262 |
| 381 | food technology | 2 | 97 | 3566 | 2990 |
| 381 | Soft Condensed Matter | 1 | 97 | 1927 | 1219 |
| 381 | particles | 2 | 97 | 1465 | 947 |
| 381 | Granular materials | 2 | 97 | 871 | 598 |
| 381 | biopolymers | 1 | 97 | 2170 | 1343 |
| 386 | protein | 2 | 96 | 1880 | 1472 |
| 386 | urban forestry | 2 | 96 | 404 | 260 |
| 386 | proteins | 2 | 96 | 3173 | 2547 |
| 389 | Ecological Engineering | 3 | 95 | 766 | 950 |
| 390 | Quantum electronics | 10 | 93 | 517 | 655 |
| 391 | Quantum Computing | 1 | 91 | 350 | 215 |
| 391 | Rheology | 8 | 91 | 360 | 592 |
| 393 | Land use | 3 | 90 | 1347 | 1422 |
| 394 | Ophthalmology | 2 | 89 | 2596 | 2164 |
| 394 | Energy Conversion | 7 | 89 | 915 | 1722 |
| 394 | Molecular evolution | 2 | 89 | 2667 | 2358 |
| 394 | Vision | 2 | 89 | 961 | 886 |
| 394 | remote sensing technology | 5 | 89 | 19 | 44 |
| 399 | sedimentary basins | 1 | 88 | 416 | 283 |
| 399 | Chromatography | 7 | 88 | 1277 | 1797 |
| 401 | soil conservation | 2 | 87 | 1166 | 943 |
| 401 | land degradation | 2 | 87 | 741 | 644 |
| 401 | degradation | 2 | 87 | 741 | 644 |
| 404 | Oncogenes | 1 | 85 | 2169 | 2186 |
| 405 | Thermodynamics | 3 | 84 | 1402 | 895 |
| 405 | Analytical Biochemistry | 7 | 84 | 1399 | 2181 |
| 405 | Elementary particles | 1 | 84 | 360 | 319 |
| 408 | Thermochemistry | 1 | 82 | 941 | 512 |
| 409 | city planning | 2 | 81 | 2301 | 1640 |
| 410 | Chromatographic analysis | 6 | 79 | 1633 | 2087 |
| 411 | clay | 1 | 76 | 1530 | 1228 |
| 411 | clay minerals | 1 | 76 | 590 | 418 |
| 413 | Synchrotron Radiation | 3 | 75 | 476 | 438 |
| 414 | Petroleum Engineering | 2 | 73 | 1081 | 864 |
| 414 | Nanophotonics | 2 | 73 | 449 | 469 |
| 414 | Combinatorial chemistry | 2 | 73 | 1337 | 1377 |
| 417 | Database Management | 4 | 72 | 812 | 939 |
| 417 | Sonar | 2 | 72 | 294 | 209 |
| 419 | Industrial Engineering | 3 | 71 | 2290 | 2256 |
| 419 | Greenhouse gases | 2 | 71 | 503 | 567 |
| 419 | Simulation Methods | 15 | 71 | 268 | 1043 |
| 419 | machinery | 4 | 71 | 757 | 833 |
| 419 | Radio waves | 8 | 71 | 188 | 236 |
| 419 | Antarctica | 4 | 71 | 537 | 532 |
| 425 | Requirements Engineering | 1 | 70 | 171 | 122 |
| 425 | coal | 4 | 70 | 1593 | 2334 |
| 425 | rehabilitation | 1 | 70 | 4364 | 2932 |
| 428 | Agricultural Ecology | 2 | 69 | 1716 | 1885 |
| 428 | vibration | 4 | 69 | 1269 | 1398 |
| 430 | Diagnostic Imaging | 4 | 68 | 2323 | 2631 |
| 430 | impact | 4 | 68 | 316 | 544 |
| 432 | Physiology | 2 | 67 | 5956 | 5725 |
| 432 | elasticity | 5 | 67 | 180 | 247 |
| 434 | microwave communication systems | 2 | 65 | 240 | 119 |
| 434 | Enzyme | 6 | 65 | 321 | 877 |
| 436 | Terahertz Technology | 14 | 64 | 1 | 24 |
| 436 | Environmental Management | 4 | 64 | 3016 | 4440 |
| 436 | Algae | 3 | 64 | 871 | 1015 |
| 439 | Anatomy | 1 | 62 | 3734 | 2755 |
| 439 | Embryology | 1 | 62 | 2887 | 2559 |
| 439 | Developmental Biology | 1 | 62 | 3792 | 3352 |
| 439 | cosmic rays | 3 | 62 | 600 | 552 |
| 439 | preventive medicine | 1 | 62 | 2911 | 2205 |
| 439 | Cell differentiation | 1 | 62 | 3181 | 3101 |
| 439 | Growth | 1 | 62 | 2248 | 2177 |
| 446 | nanoscience | 3 | 61 | 3426 | 4034 |
| 446 | Recycling | 1 | 61 | 1228 | 1389 |
| 448 | Microwave devices | 7 | 60 | 75 | 86 |
| 449 | Nanoelectronics | 9 | 59 | 519 | 866 |
| 449 | Wireless Communication | 1 | 59 | 959 | 434 |
| 451 | Radiology | 3 | 58 | 2185 | 1982 |
| 451 | energy conservation | 3 | 58 | 2313 | 3129 |
| 453 | Hydrogeology | 2 | 57 | 1063 | 898 |
| 454 | Paleoclimatology | 6 | 56 | 908 | 1558 |
| 454 | Earthquake Engineering | 5 | 56 | 1098 | 1681 |
| 454 | free radicals | 1 | 56 | 2758 | 2556 |
| 457 | Mycology | 2 | 55 | 2398 | 2294 |
| 457 | Fungi | 2 | 55 | 1494 | 1609 |
| 459 | Extreme environments | 1 | 53 | 543 | 506 |
| 460 | Ultrasonic Imaging | 3 | 51 | 622 | 835 |
| 460 | cardiac catheterization | 2 | 51 | 1321 | 1142 |
| 462 | Avionics | 3 | 49 | 16 | 21 |
| 463 | Turbulence | 1 | 48 | 500 | 313 |
| 463 | Metallography | 2 | 48 | 1190 | 1231 |
| 463 | Landslides | 3 | 48 | 261 | 521 |
| 466 | Computational Linguistics | 1 | 47 | 1241 | 544 |
| 466 | Magnetic Resonance Spectroscopy | 6 | 47 | 1106 | 1634 |
| 468 | health planning | 2 | 46 | 3285 | 3080 |
| 469 | Economics | 3 | 45 | 4875 | 4500 |
| 469 | nuclear magnetic resonance | 5 | 45 | 1091 | 1525 |
| 469 | Organic Geochemistry | 1 | 45 | 748 | 811 |
| 469 | Crystallography | 6 | 45 | 1515 | 1642 |
| 473 | Industrial Safety | 1 | 44 | 2552 | 1739 |
| 473 | Industrial Ecology | 2 | 44 | 272 | 461 |
| 473 | Optoelectronic devices | 2 | 44 | 1318 | 824 |
| 473 | Nonlinear systems | 3 | 44 | 658 | 795 |
| 477 | Paleoecology | 5 | 43 | 955 | 1632 |
| 477 | Paleogeography | 5 | 43 | 832 | 1516 |
| 477 | visualization | 5 | 43 | 1628 | 1374 |
| 477 | Information Science | 6 | 43 | 2110 | 3761 |
| 481 | Public Health | 1 | 42 | 11031 | 9084 |
| 481 | Marine Geology | 1 | 42 | 1081 | 899 |
| 481 | Petroleum Geology | 1 | 42 | 936 | 836 |
| 481 | Information Retrieval | 4 | 42 | 411 | 779 |
| 481 | Radiation Protection | 3 | 42 | 902 | 706 |
| 481 | radiation monitoring | 3 | 42 | 795 | 660 |
| 481 | Radiation dosimetry | 3 | 42 | 605 | 504 |
| 488 | Atmospheric Science | 5 | 41 | 165 | 338 |
| 488 | Optoelectronics | 2 | 41 | 839 | 565 |
| 488 | Engineering Geology | 5 | 41 | 1244 | 2109 |
| 488 | Microfabrication | 5 | 41 | 293 | 608 |
| 488 | Regional Development | 1 | 41 | 572 | 464 |
| 488 | Plastics | 3 | 41 | 2042 | 2341 |
| 488 | Development planning | 1 | 41 | 524 | 431 |
| 488 | Korea | 5 | 41 | 265 | 387 |
| 488 | Asia | 5 | 41 | 2740 | 3586 |
| 488 | Economic planning | 1 | 41 | 1031 | 851 |
| 498 | Bioremediation | 2 | 40 | 1272 | 1616 |
| 499 | Differential Equations | 1 | 38 | 1652 | 1062 |
| 499 | Integrated Circuits | 9 | 38 | 394 | 637 |
| 501 | Ecosystem management | 2 | 36 | 1032 | 1264 |
| 501 | Interfaces | 2 | 36 | 484 | 505 |
| 501 | Maps | 3 | 36 | 166 | 251 |
| 504 | Thin Films | 2 | 35 | 908 | 866 |
| 505 | Biosensors | 1 | 34 | 2391 | 2871 |
| 505 | Latin America | 1 | 34 | 2436 | 1274 |
| 505 | Bioelectronics | 1 | 34 | 2094 | 2624 |
| 508 | Biomass Energy | 1 | 33 | 4271 | 4270 |
| 508 | Photochemistry | 3 | 33 | 2203 | 3120 |
| 508 | France | 1 | 33 | 924 | 452 |
| 508 | Brain | 1 | 33 | 4575 | 4541 |
| 508 | Seaweed | 1 | 33 | 1084 | 1109 |
| 508 | Aging | 1 | 33 | 5476 | 4716 |
| 514 | Boundary Value Problems | 1 | 32 | 829 | 365 |
| 514 | Antenna Arrays | 1 | 32 | 333 | 179 |
| 514 | Organometallic compounds | 1 | 32 | 2122 | 1968 |
| 517 | Manufacturing Processes | 2 | 31 | 3121 | 3434 |
| 518 | Crystallization | 1 | 30 | 1095 | 744 |
| 519 | Computational Chemistry | 2 | 29 | 1006 | 1271 |
| 520 | Geometry | 2 | 27 | 1641 | 1317 |
| 520 | Metallic Glasses | 1 | 27 | 856 | 866 |
| 520 | Knowledge | 2 | 27 | 594 | 549 |
| 520 | chronic disease | 1 | 27 | 832 | 844 |
| 520 | Chronic diseases | 1 | 27 | 1465 | 1677 |
| 525 | Acoustics | 2 | 26 | 397 | 213 |
| 525 | Pharmaceutical Chemistry | 2 | 26 | 5482 | 6602 |
| 525 | Clinical Chemistry | 2 | 26 | 4356 | 5498 |
| 525 | Groundwater | 1 | 26 | 1373 | 1309 |
| 525 | Semiconductor industry | 6 | 26 | 500 | 1093 |
| 525 | Informatics | 4 | 26 | 873 | 1738 |
| 531 | Telecommunications | 3 | 25 | 924 | 1261 |
| 532 | Algorithms | 3 | 23 | 844 | 1158 |
| 532 | microwave antennas | 3 | 23 | 496 | 705 |
| 532 | Multimedia Systems | 3 | 23 | 2010 | 2543 |
| 535 | Environmental Law | 3 | 22 | 1370 | 2885 |
| 535 | Plant diseases | 2 | 22 | 2685 | 3214 |
| 537 | Natural Sciences | 1 | 21 | 309 | 241 |
| 537 | Wetland ecology | 1 | 21 | 1036 | 1085 |
| 537 | wetland management | 1 | 21 | 465 | 549 |
| 540 | Neuroimaging | 3 | 20 | 344 | 687 |
| 540 | Histochemistry | 1 | 20 | 2259 | 2312 |
| 540 | Food Microbiology | 1 | 20 | 2483 | 3089 |
| 540 | Technological Innovations | 2 | 20 | 1524 | 2185 |
| 540 | histological techniques | 1 | 20 | 1461 | 1886 |
| 540 | optical phenomena | 3 | 20 | 127 | 354 |
| 546 | Ocean-atmosphere interaction | 1 | 19 | 220 | 139 |
| 546 | plant viruses | 1 | 19 | 438 | 539 |
| 546 | Nonlinear mechanics | 3 | 19 | 457 | 869 |
| 549 | environmental indicators | 2 | 18 | 1630 | 2758 |
| 549 | Strategic planning | 1 | 18 | 1500 | 1563 |
| 549 | Entrepreneurship | 1 | 18 | 1912 | 2134 |
| 549 | Photobiology | 1 | 18 | 2690 | 2997 |
| 549 | forest policy | 1 | 18 | 808 | 938 |
| 549 | optical devices | 1 | 18 | 998 | 1016 |
| 555 | Serology | 2 | 17 | 826 | 1321 |
| 555 | Algebra | 1 | 17 | 2394 | 1738 |
| 555 | Expert Systems | 1 | 17 | 539 | 552 |
| 555 | Speech acoustics | 1 | 17 | 1 | 1 |
| 555 | management | 3 | 17 | 3996 | 5923 |
| 555 | Membranes | 1 | 17 | 3114 | 3818 |
| 561 | Environmental Economics | 1 | 16 | 992 | 1070 |
| 561 | technology transfer | 1 | 16 | 658 | 806 |
| 563 | Materials Engineering | 2 | 15 | 1110 | 1538 |
| 563 | Production Engineering | 2 | 15 | 2715 | 3516 |
| 563 | Hypertension | 1 | 15 | 3111 | 3743 |
| 563 | Cardiovascular system | 1 | 15 | 3011 | 3725 |
| 563 | Watershed management | 1 | 15 | 572 | 588 |
| 563 | supercritical fluids | 2 | 15 | 548 | 1099 |
| 563 | Sedimentary rocks | 1 | 15 | 1065 | 1324 |
| 563 | Fuzzy systems | 4 | 15 | 1716 | 2900 |
| 563 | carbonate rocks | 1 | 15 | 298 | 283 |
| 572 | Nondestructive testing | 4 | 14 | 680 | 1488 |
| 572 | Microprocessors | 2 | 14 | 816 | 1236 |
| 574 | Tribology | 1 | 13 | 2143 | 2436 |
| 574 | Environmental Geology | 1 | 13 | 2815 | 3397 |
| 574 | Solar power plants | 3 | 13 | 212 | 735 |
| 574 | drug resistance | 1 | 13 | 1731 | 2317 |
| 574 | Aerosols | 3 | 13 | 701 | 1327 |
| 574 | Photovoltaic Cells | 3 | 13 | 212 | 736 |
| 574 | Societies | 2 | 13 | 251 | 350 |
| 581 | Economic History | 1 | 12 | 6306 | 5710 |
| 581 | Human Geography | 1 | 12 | 2098 | 2200 |
| 581 | Process Control | 2 | 12 | 1225 | 2284 |
| 581 | Educational Technology | 1 | 12 | 3053 | 3373 |
| 581 | Production Management | 2 | 12 | 1464 | 2586 |
| 581 | educational innovations | 1 | 12 | 1074 | 1216 |
| 587 | Fiber Optics | 1 | 11 | 1026 | 1047 |
| 587 | Biometrics | 1 | 11 | 2136 | 2436 |
| 587 | scientific research | 3 | 11 | 53 | 135 |
| 590 | Marine Engineering | 2 | 10 | 433 | 556 |
| 590 | Bioinstrumentation | 5 | 10 | 33 | 152 |
| 590 | Naval Architecture | 2 | 10 | 464 | 774 |
| 590 | Diffraction | 5 | 10 | 89 | 335 |
| 590 | Plasma turbulence | 5 | 10 | 33 | 152 |
| 590 | X-ray spectroscopy | 2 | 10 | 361 | 658 |
| 590 | Electrons | 5 | 10 | 57 | 279 |
| 597 | Philosophy | 1 | 9 | 2833 | 1965 |
| 597 | Software Maintenance | 1 | 9 | 446 | 544 |
| 597 | Graph Theory | 1 | 9 | 1435 | 1300 |
| 597 | Optical Communications | 2 | 9 | 916 | 1450 |
| 597 | Discrete Mathematics | 1 | 9 | 716 | 589 |
| 597 | Plate Tectonics | 1 | 9 | 552 | 737 |
| 597 | Forecasting | 1 | 9 | 1138 | 1370 |
| 597 | Energy Harvesting | 1 | 9 | 808 | 1241 |
| 597 | Adaptive control systems | 1 | 9 | 1145 | 1388 |
| 597 | graph | 1 | 9 | 716 | 589 |
| 597 | Porous materials | 1 | 9 | 1493 | 1840 |
| 608 | Political Science | 1 | 8 | 3299 | 3006 |
| 608 | Intelligent Transportation Systems | 2 | 8 | 1041 | 1833 |
| 608 | Respiration | 2 | 8 | 2277 | 3890 |
| 611 | Obstetrics | 1 | 7 | 4762 | 5764 |
| 611 | Industrial Design | 1 | 7 | 581 | 848 |
| 611 | Emergency Medical Services | 1 | 7 | 1894 | 2544 |
| 611 | Cartography | 2 | 7 | 831 | 1152 |
| 611 | Clinical Immunology | 1 | 7 | 2598 | 3465 |
| 611 | Immunopathology | 1 | 7 | 2669 | 3565 |
| 611 | Emergency Medicine | 1 | 7 | 3211 | 3893 |
| 611 | Kalman Filtering | 2 | 7 | 186 | 306 |
| 611 | Chromosome mapping | 1 | 7 | 3750 | 5149 |
| 611 | Magnetic Separation | 1 | 7 | 6 | 2 |
| 611 | Environmental forensics | 1 | 7 | 212 | 362 |
| 611 | ports | 1 | 7 | 421 | 711 |
| 611 | Waterways | 1 | 7 | 197 | 266 |
| 611 | Foodborne diseases | 1 | 7 | 630 | 1001 |
| 611 | irrigation | 1 | 7 | 746 | 1010 |
| 611 | Harbors | 1 | 7 | 249 | 328 |
| 611 | weather | 2 | 7 | 858 | 1962 |
| 611 | pigments | 1 | 7 | 1520 | 2174 |
| 629 | Information Technology | 1 | 6 | 4887 | 5667 |
| 629 | Mechatronics | 3 | 6 | 801 | 2009 |
| 629 | Mobile Computing | 2 | 6 | 1688 | 2637 |
| 629 | Dietetics | 1 | 6 | 1693 | 2106 |
| 629 | Astrodynamics | 1 | 6 | 55 | 109 |
| 629 | Diet | 1 | 6 | 4188 | 5682 |
| 629 | phase diagrams | 1 | 6 | 332 | 442 |
| 629 | Scanning electron microscopy | 1 | 6 | 456 | 726 |
| 637 | Radiotherapy | 1 | 5 | 856 | 798 |
| 637 | Microwave circuits | 3 | 5 | 126 | 417 |
| 637 | air quality | 1 | 5 | 653 | 1121 |
| 637 | explosives | 2 | 5 | 371 | 654 |
| 637 | health services | 1 | 5 | 2434 | 3580 |
| 637 | smart structures | 1 | 5 | 276 | 332 |
| 637 | aerosol | 2 | 5 | 598 | 1151 |
| 644 | Social Sciences | 2 | 4 | 5522 | 8091 |
| 644 | Education | 4 | 4 | 4291 | 8216 |
| 644 | Traffic Engineering | 1 | 4 | 805 | 1312 |
| 644 | Surveying | 4 | 4 | 133 | 497 |
| 644 | Soil Mechanics | 2 | 4 | 1553 | 2531 |
| 644 | Neuropsychology | 1 | 4 | 4219 | 5674 |
| 644 | occupational health and safety | 2 | 4 | 361 | 832 |
| 644 | industrial hygiene | 2 | 4 | 1839 | 3282 |
| 644 | Transportation | 2 | 4 | 2288 | 3978 |
| 644 | Animal ecology | 1 | 4 | 2153 | 2967 |
| 644 | glycoproteins | 1 | 4 | 1035 | 1680 |
| 644 | Glycoconjugates | 1 | 4 | 1035 | 1680 |
| 644 | Oligosaccharide | 1 | 4 | 722 | 1224 |
| 644 | Carbohydrates | 1 | 4 | 984 | 1551 |
| 644 | social evolution | 1 | 4 | 40 | 115 |
| 644 | Culture | 1 | 4 | 2126 | 2613 |
| 644 | Australia | 2 | 4 | 3052 | 5505 |
| 644 | glycolipids | 1 | 4 | 1035 | 1680 |
| 662 | Electromagnetic compatibility | 1 | 3 | 236 | 345 |
| 662 | Adsorption | 1 | 3 | 485 | 823 |
| 664 | Organic Chemistry | 1 | 2 | 5024 | 6541 |
| 664 | Multivariate Analysis | 1 | 2 | 931 | 1415 |
| 664 | Fracture mechanics | 1 | 2 | 2439 | 3428 |
| 664 | Leadership | 1 | 2 | 995 | 1684 |
| 664 | nuclear magnetic resonance spectroscopy | 1 | 2 | 1447 | 2092 |
| 664 | Scandinavia | 1 | 2 | 1336 | 2116 |
| 664 | NMR | 1 | 2 | 1097 | 1658 |
| 664 | Spain | 1 | 2 | 1620 | 1835 |
| 664 | magnetic resonance | 1 | 2 | 1152 | 1720 |
| 673 | Engineering Economics | 1 | 1 | 224 | 397 |
| 673 | Computer Architecture | 2 | 1 | 700 | 1479 |
| 673 | air quality management | 1 | 1 | 1240 | 2296 |
| 673 | Flexible manufacturing systems | 1 | 1 | 848 | 1611 |
| 673 | Risk assessment | 1 | 1 | 1431 | 2617 |
| 673 | digital preservation | 1 | 1 | 246 | 528 |
| 673 | Radiobiology | 1 | 1 | 3340 | 4220 |
| 673 | Microfluidics | 1 | 1 | 513 | 990 |
| 673 | Calorimetry | 1 | 1 | 2207 | 3315 |
| 673 | indoor air pollution | 1 | 1 | 901 | 1736 |
| 673 | Ventilation | 1 | 1 | 1187 | 2118 |
| 673 | Sick building syndrome | 1 | 1 | 901 | 1736 |
| 673 | ADA | 1 | 1 | 167 | 169 |
| 673 | Jurisprudence | 1 | 1 | 1951 | 3000 |
| 673 | Criminal investigation | 1 | 1 | 467 | 864 |
| 673 | Thermal analysis | 1 | 1 | 2207 | 3315 |
| 689 | Medical Technology | 1 | 0 | 4049 | 6463 |
| 689 | Hematology | 1 | 0 | 5572 | 6876 |
| 689 | Agricultural Education | 1 | 0 | 286 | 577 |
| 689 | Nuclear Fusion | 1 | 0 | 1099 | 1711 |
| 689 | Municipal Engineering | 2 | 0 | 571 | 1689 |
| 689 | Dynamic programming | 1 | 0 | 52 | 107 |
| 689 | Liquid Crystals | 1 | 0 | 1667 | 2408 |
| 689 | Waste management | 2 | 0 | 2057 | 4332 |
| 689 | Knowledge management | 1 | 0 | 1504 | 2643 |
| 689 | blood transfusion | 1 | 0 | 1741 | 2649 |
| 689 | philology | 1 | 0 | 1342 | 1397 |
| 689 | monitoring | 1 | 0 | 710 | 1309 |
| 689 | Parameter estimation | 2 | 0 | 4 | 12 |
| 689 | Roads | 1 | 0 | 1407 | 2303 |
| 689 | South America | 1 | 0 | 303 | 501 |
| 689 | Decision making | 1 | 0 | 3214 | 5348 |
| 689 | Business communication | 1 | 0 | 340 | 656 |
| 689 | children | 1 | 0 | 1142 | 1975 |
