| 1 | Geology | 905 | 32.5K | 35 | 53 |
| 2 | Geophysics | 1,036 | 31.4K | 91 | 142 |
| 3 | Science | 147 | 13.5K | 1991 | 1677 |
| 4 | Biology | 75 | 10.8K | 2905 | 1879 |
| 5 | Physics | 99 | 10.5K | 2598 | 2054 |
| 6 | Geochemistry | 259 | 9.0K | 110 | 179 |
| 7 | Natural history | 40 | 8.6K | 1235 | 1317 |
| 8 | Planets | 171 | 6.4K | 198 | 239 |
| 9 | Astronomy | 111 | 6.3K | 754 | 716 |
| 10 | Earth Sciences | 129 | 5.9K | 327 | 304 |
| 11 | Seismology | 126 | 5.8K | 29 | 20 |
| 12 | Earthquakes | 238 | 5.1K | 6 | 7 |
| 13 | Earthquake Engineering | 191 | 3.2K | 49 | 124 |
| 14 | Geomagnetism | 122 | 3.1K | 35 | 44 |
| 15 | Microbial Ecology | 29 | 2.9K | 794 | 559 |
| 16 | United States | 83 | 2.9K | 963 | 786 |
| 17 | Microbiology | 30 | 2.6K | 3069 | 2143 |
| 18 | Volcanoes | 60 | 2.5K | 22 | 20 |
| 19 | Hydrogeology | 102 | 2.4K | 15 | 20 |
| 20 | Ecology | 36 | 2.4K | 2425 | 1959 |
| 21 | Paleontology | 48 | 2.3K | 301 | 126 |
| 22 | Geodynamics | 49 | 2.1K | 129 | 129 |
| 23 | Geothermal Energy | 88 | 2.1K | 4 | 5 |
| 24 | natural disasters | 53 | 2.0K | 79 | 90 |
| 25 | Paleoclimatology | 41 | 1.9K | 209 | 189 |
| 26 | Meteorites | 39 | 1.9K | 296 | 339 |
| 27 | hazard mitigation | 41 | 1.8K | 54 | 38 |
| 28 | Chemistry | 38 | 1.8K | 4282 | 3846 |
| 29 | Paleoecology | 37 | 1.8K | 212 | 170 |
| 30 | Mineralogy | 48 | 1.7K | 315 | 292 |
| 31 | Cosmochemistry | 36 | 1.7K | 129 | 115 |
| 32 | Petroleum Geology | 49 | 1.7K | 45 | 66 |
| 33 | Paleogeography | 35 | 1.6K | 182 | 162 |
| 34 | Hydrology | 38 | 1.6K | 702 | 540 |
| 35 | Environmental Engineering | 19 | 1.6K | 1777 | 1068 |
| 36 | Biogeochemistry | 30 | 1.5K | 343 | 369 |
| 37 | Meteorology | 34 | 1.5K | 748 | 808 |
| 38 | Marine Geology | 43 | 1.5K | 56 | 75 |
| 39 | Geomorphology | 43 | 1.4K | 237 | 327 |
| 40 | Climatology | 33 | 1.3K | 560 | 576 |
| 41 | Ecological Engineering | 7 | 1.2K | 382 | 72 |
| 42 | Sedimentary rocks | 27 | 1.2K | 66 | 64 |
| 43 | Environment | 26 | 1.2K | 2145 | 2615 |
| 44 | Organic Geochemistry | 19 | 1.1K | 97 | 90 |
| 45 | Water | 21 | 1.1K | 1052 | 1078 |
| 46 | Environmental Microbiology | 6 | 1.1K | 1139 | 515 |
| 47 | Ore deposits | 22 | 1.0K | 133 | 106 |
| 48 | Engineering Geology | 31 | 1.0K | 350 | 361 |
| 49 | Atmospheric Physics | 20 | 1.0K | 743 | 637 |
| 50 | Landslides | 33 | 1.0K | 19 | 41 |
| 51 | Nanotechnology | 25 | 913 | 2333 | 2381 |
| 52 | Pollution | 19 | 849 | 2878 | 2856 |
| 53 | Petrology | 31 | 844 | 315 | 405 |
| 54 | Volcanology | 29 | 828 | 3 | 3 |
| 55 | emergency management | 25 | 784 | 108 | 114 |
| 56 | Materials | 20 | 777 | 3272 | 2848 |
| 57 | cryosphere | 8 | 757 | 262 | 171 |
| 58 | Paleoceanography | 11 | 667 | 84 | 108 |
| 59 | Water pollution | 10 | 660 | 1827 | 1383 |
| 60 | Risk Management | 10 | 618 | 342 | 174 |
| 61 | Environmental Health | 16 | 611 | 3112 | 3097 |
| 62 | Sedimentology | 15 | 585 | 180 | 191 |
| 63 | rivers | 1 | 580 | 686 | 62 |
| 64 | air quality management | 10 | 575 | 192 | 114 |
| 65 | Microorganisms | 8 | 573 | 837 | 730 |
| 66 | Medicine | 14 | 553 | 7794 | 7065 |
| 67 | Plate Tectonics | 12 | 539 | 92 | 48 |
| 68 | Structural dynamics | 9 | 534 | 643 | 463 |
| 69 | Technology | 18 | 514 | 2132 | 1791 |
| 70 | Physical Geography | 4 | 496 | 549 | 123 |
| 71 | sedimentary basins | 11 | 488 | 63 | 59 |
| 72 | water supply | 13 | 485 | 454 | 514 |
| 73 | Biodiversity conservation | 6 | 459 | 1469 | 1409 |
| 74 | Agricultural Chemistry | 10 | 443 | 1583 | 1255 |
| 75 | Biogeography | 5 | 439 | 890 | 780 |
| 76 | Australia | 20 | 428 | 697 | 650 |
| 77 | Atmospheric Chemistry | 12 | 393 | 594 | 756 |
| 78 | Climate change | 5 | 392 | 964 | 1246 |
| 78 | Eutrophication | 5 | 392 | 933 | 1239 |
| 80 | Botany | 20 | 381 | 2069 | 2649 |
| 81 | biological evolution | 4 | 368 | 2273 | 1651 |
| 82 | Geodesy | 5 | 365 | 633 | 236 |
| 82 | Nanostructured Materials | 14 | 365 | 1908 | 2086 |
| 84 | atmospheric models | 8 | 363 | 507 | 521 |
| 85 | Astrophysics | 4 | 361 | 3293 | 2203 |
| 86 | space environment | 14 | 360 | 96 | 103 |
| 87 | Probability | 4 | 339 | 601 | 291 |
| 87 | Financial management | 4 | 339 | 491 | 306 |
| 87 | Risk | 4 | 339 | 552 | 307 |
| 90 | Geography | 10 | 333 | 1519 | 1260 |
| 91 | Research | 11 | 332 | 7198 | 6962 |
| 92 | sanitation | 8 | 326 | 1150 | 1524 |
| 92 | Evolution | 3 | 326 | 2375 | 1446 |
| 94 | Public Health | 4 | 320 | 6858 | 4220 |
| 95 | Soil Science | 9 | 317 | 1256 | 1200 |
| 96 | Africa | 3 | 305 | 2022 | 493 |
| 96 | Middle East | 3 | 305 | 1166 | 225 |
| 98 | Marine Biology | 7 | 299 | 2099 | 1789 |
| 98 | Emergency Medical Services | 7 | 299 | 576 | 276 |
| 100 | Radioisotopes | 11 | 277 | 689 | 486 |
| 101 | food technology | 9 | 263 | 1753 | 1870 |
| 102 | Quality Control | 8 | 261 | 1177 | 1065 |
| 102 | food handling | 8 | 261 | 498 | 609 |
| 104 | Groundwater | 12 | 249 | 319 | 349 |
| 105 | Environmental Geology | 9 | 232 | 966 | 1065 |
| 106 | ecosystem | 5 | 231 | 1266 | 1262 |
| 107 | Isotopes | 2 | 208 | 176 | 25 |
| 108 | Asia | 6 | 203 | 2412 | 1393 |
| 109 | Mass Spectrometry | 8 | 195 | 891 | 957 |
| 110 | Petroleum Engineering | 8 | 191 | 485 | 484 |
| 111 | Semiconductors | 2 | 188 | 2877 | 1291 |
| 112 | Hydraulic Engineering | 4 | 186 | 968 | 668 |
| 113 | Data Mining | 4 | 185 | 1738 | 1466 |
| 113 | data collection | 4 | 185 | 1118 | 1064 |
| 115 | Composite Materials | 6 | 183 | 2294 | 2466 |
| 116 | Malaria | 2 | 182 | 1138 | 576 |
| 117 | Materials Science | 12 | 179 | 3182 | 4006 |
| 117 | Nanoparticles | 7 | 179 | 1455 | 1658 |
| 119 | Catalysis | 6 | 169 | 3035 | 3247 |
| 119 | freshwater biology | 4 | 169 | 937 | 734 |
| 121 | Solid State Physics | 15 | 168 | 2359 | 2904 |
| 122 | Environmental Policy | 5 | 167 | 3133 | 3569 |
| 123 | Archaeology | 6 | 165 | 1149 | 895 |
| 123 | Molecular Biology | 3 | 165 | 9402 | 8262 |
| 123 | Environmental monitoring | 6 | 165 | 3482 | 4041 |
| 126 | Ocean Engineering | 5 | 159 | 1447 | 1382 |
| 127 | Sites | 5 | 156 | 483 | 594 |
| 128 | Extreme environments | 5 | 154 | 156 | 222 |
| 129 | Condensed Matter | 15 | 152 | 2172 | 2709 |
| 130 | Fluid Mechanics | 5 | 145 | 1599 | 1340 |
| 131 | Marine Geophysics | 5 | 144 | 182 | 132 |
| 132 | Biogeochemical cycles | 5 | 143 | 394 | 703 |
| 133 | Fluid Dynamics | 4 | 137 | 1209 | 952 |
| 134 | Molecular Microbiology | 1 | 136 | 1723 | 1277 |
| 135 | Oceanography | 9 | 133 | 1332 | 1777 |
| 136 | Smart Materials | 6 | 131 | 691 | 750 |
| 136 | Environmental Geochemistry | 6 | 131 | 296 | 367 |
| 138 | global environmental change | 4 | 130 | 885 | 1107 |
| 139 | Soil dynamics | 11 | 129 | 195 | 407 |
| 140 | actuators | 1 | 127 | 3718 | 2374 |
| 140 | transducers | 1 | 127 | 3718 | 2374 |
| 142 | Biochemistry | 4 | 125 | 9266 | 8925 |
| 142 | soil microbiology | 4 | 125 | 1515 | 2096 |
| 142 | Soil biology | 4 | 125 | 935 | 1230 |
| 145 | Marine Pollution | 2 | 121 | 1760 | 1444 |
| 146 | Psychiatry | 1 | 114 | 7911 | 5008 |
| 146 | Agriculture | 4 | 114 | 2544 | 2346 |
| 148 | environmental pollution | 3 | 113 | 5270 | 5297 |
| 149 | nanoscience | 4 | 112 | 3033 | 3362 |
| 150 | Nanostructures | 4 | 108 | 2319 | 2505 |
| 151 | exobiology | 2 | 104 | 516 | 479 |
| 151 | Fisheries | 6 | 104 | 1456 | 1700 |
| 153 | Genomics | 2 | 98 | 4968 | 4319 |
| 154 | Engineering | 9 | 97 | 3356 | 4007 |
| 155 | Renewable Energy Sources | 3 | 96 | 3058 | 3797 |
| 156 | Social Sciences | 8 | 95 | 2803 | 2972 |
| 157 | Solar System | 1 | 94 | 1395 | 961 |
| 158 | Greenhouse gases | 2 | 91 | 503 | 510 |
| 158 | Natural resources | 2 | 91 | 1096 | 985 |
| 158 | Hydrodynamics | 2 | 91 | 800 | 704 |
| 161 | Biodiversity | 2 | 82 | 3296 | 2853 |
| 162 | Analytical Chemistry | 2 | 80 | 6019 | 5240 |
| 163 | Diabetes mellitus | 1 | 79 | 4124 | 3366 |
| 163 | Diabetes | 1 | 79 | 4209 | 3430 |
| 165 | Chemical analysis | 1 | 78 | 2295 | 1553 |
| 166 | Statistical physics | 11 | 77 | 2504 | 3655 |
| 167 | Energy Conversion | 1 | 76 | 2049 | 1840 |
| 167 | Energy Storage | 1 | 76 | 2210 | 1523 |
| 167 | fuel cells | 1 | 76 | 2117 | 1711 |
| 170 | Epidemiology | 2 | 75 | 5951 | 5281 |
| 171 | clay | 3 | 74 | 902 | 1257 |
| 172 | Radiation | 11 | 73 | 1377 | 2479 |
| 173 | Metallic Glasses | 1 | 67 | 856 | 558 |
| 174 | Chemical Oceanography | 1 | 64 | 585 | 583 |
| 175 | Scandinavia | 1 | 62 | 1336 | 765 |
| 176 | environmental protection | 4 | 60 | 3870 | 5246 |
| 176 | weather forecasting | 1 | 60 | 447 | 344 |
| 176 | Spectrum analysis | 2 | 60 | 5786 | 5399 |
| 179 | Molecular Genetics | 3 | 59 | 2573 | 3341 |
| 179 | Transport | 1 | 59 | 1267 | 1046 |
| 179 | Sea | 1 | 59 | 1142 | 875 |
| 179 | Fishery resources | 1 | 59 | 1279 | 962 |
| 183 | Humanities | 2 | 56 | 2832 | 1534 |
| 184 | Mathematics | 4 | 54 | 6267 | 5779 |
| 184 | Manufacturing Processes | 1 | 54 | 3915 | 2900 |
| 184 | Antarctica | 5 | 54 | 456 | 640 |
| 184 | Microscopy | 1 | 54 | 3363 | 2018 |
| 188 | Clinical Chemistry | 1 | 53 | 5348 | 4587 |
| 188 | Electrophoresis | 1 | 53 | 3159 | 2522 |
| 188 | Chromatography | 1 | 53 | 3141 | 2358 |
| 188 | disaster relief | 2 | 53 | 336 | 368 |
| 188 | Chromatographic analysis | 1 | 53 | 3573 | 2533 |
| 193 | Molecular evolution | 2 | 47 | 2667 | 3090 |
| 193 | Phylogeny | 2 | 47 | 1316 | 1697 |
| 195 | Mining Geology | 2 | 46 | 130 | 106 |
| 195 | Optical materials | 1 | 46 | 4044 | 3788 |
| 195 | Climate | 2 | 46 | 919 | 1167 |
| 198 | Palynology | 5 | 45 | 182 | 352 |
| 198 | Nuclear Chemistry | 7 | 45 | 854 | 1277 |
| 198 | Radiochemistry | 7 | 45 | 791 | 1148 |
| 198 | Aerosols | 2 | 45 | 854 | 900 |
| 198 | Aquatic ecology | 2 | 45 | 1413 | 1450 |
| 203 | Zoology | 4 | 44 | 2833 | 3346 |
| 203 | Environmental Management | 4 | 44 | 3017 | 5040 |
| 205 | animals | 3 | 40 | 1586 | 1799 |
| 206 | Geobiology | 3 | 38 | 567 | 916 |
| 207 | Remote Sensing | 2 | 37 | 2196 | 1847 |
| 207 | Rock deformation | 2 | 37 | 301 | 434 |
| 207 | Nonlinear Dynamics | 2 | 37 | 2840 | 2984 |
| 210 | vibration | 4 | 36 | 1269 | 1843 |
| 210 | air | 1 | 36 | 380 | 429 |
| 210 | Developing countries | 1 | 36 | 4840 | 3948 |
| 213 | Chemical Engineering | 1 | 34 | 7062 | 6580 |
| 214 | Biotechnology | 4 | 33 | 6758 | 9785 |
| 214 | Foraminifera | 4 | 33 | 69 | 172 |
| 216 | Mollusks | 6 | 32 | 120 | 308 |
| 217 | Biocompatible Materials | 1 | 31 | 6045 | 6422 |
| 217 | miniaturization | 3 | 31 | 2226 | 3522 |
| 219 | Rock Mechanics | 3 | 30 | 1017 | 1476 |
| 219 | Geographic information systems | 3 | 30 | 1315 | 1738 |
| 221 | Rural Development | 1 | 29 | 1261 | 1012 |
| 221 | Agricultural Ecology | 2 | 29 | 1716 | 2566 |
| 221 | Molecular ecology | 2 | 29 | 1613 | 2604 |
| 221 | plasma spraying | 2 | 29 | 381 | 489 |
| 225 | Mathematical Physics | 1 | 28 | 4860 | 3607 |
| 226 | Structural Engineering | 2 | 27 | 2217 | 2474 |
| 226 | Nanoelectronics | 1 | 27 | 1647 | 1328 |
| 226 | Microelectronics | 1 | 27 | 3117 | 3100 |
| 226 | clay minerals | 1 | 27 | 590 | 674 |
| 226 | aerosol | 1 | 27 | 824 | 778 |
| 231 | Surface Chemistry | 7 | 26 | 3099 | 5961 |
| 231 | Thin Films | 7 | 26 | 348 | 994 |
| 233 | Geotechnical Engineering | 2 | 25 | 755 | 945 |
| 233 | Soil Mechanics | 2 | 25 | 1553 | 1872 |
| 235 | Electronics | 2 | 24 | 4892 | 4885 |
| 235 | Electrochemistry | 5 | 24 | 3637 | 5371 |
| 237 | Systems Biology | 1 | 23 | 3266 | 3667 |
| 237 | Statistical Mechanics | 6 | 23 | 965 | 1587 |
| 237 | Japan | 9 | 23 | 1461 | 3442 |
| 240 | Porous materials | 3 | 22 | 886 | 1377 |
| 240 | China | 3 | 22 | 3582 | 5333 |
| 242 | Economics | 1 | 21 | 6737 | 5645 |
| 242 | Underwater Archaeology | 1 | 21 | 287 | 162 |
| 242 | concrete | 1 | 21 | 1767 | 2032 |
| 242 | Cement | 1 | 21 | 1130 | 1398 |
| 242 | finance | 1 | 21 | 3816 | 3387 |
| 247 | Emergency Medicine | 1 | 20 | 3232 | 3139 |
| 248 | Emergency Nursing | 1 | 19 | 419 | 423 |
| 248 | Glaciology | 2 | 19 | 304 | 468 |
| 248 | Communication in politics | 2 | 19 | 346 | 454 |
| 248 | glaciers | 2 | 19 | 277 | 441 |
| 252 | Computational Biology | 1 | 17 | 5719 | 6027 |
| 252 | Metallurgy | 1 | 17 | 4324 | 4115 |
| 252 | Electromagnetism | 2 | 17 | 1101 | 1391 |
| 252 | Photochemistry | 1 | 17 | 3339 | 3776 |
| 252 | Magnetic Materials | 2 | 17 | 1948 | 2572 |
| 252 | Light | 1 | 17 | 1979 | 2449 |
| 252 | Metals | 1 | 17 | 3872 | 3880 |
| 259 | Environmental Economics | 1 | 16 | 992 | 1081 |
| 259 | Combinatorial chemistry | 1 | 16 | 1827 | 2343 |
| 261 | Biomedical Engineering | 2 | 15 | 7284 | 9489 |
| 261 | Cartography | 5 | 15 | 427 | 890 |
| 261 | Plant physiology | 1 | 15 | 3487 | 4227 |
| 261 | pollutants | 1 | 15 | 3527 | 4406 |
| 261 | Environmental pollutants | 1 | 15 | 4162 | 5039 |
| 261 | Latin America | 2 | 15 | 1915 | 1785 |
| 261 | Host-parasite interactions | 1 | 15 | 2508 | 3427 |
| 261 | Plant diseases | 1 | 15 | 3322 | 3564 |
| 261 | DNA | 2 | 15 | 975 | 1670 |
| 270 | Civil Engineering | 1 | 14 | 3302 | 2856 |
| 270 | Planetary Science | 4 | 14 | 561 | 1136 |
| 270 | Prospecting | 1 | 14 | 241 | 269 |
| 270 | Ecological disturbances | 1 | 14 | 90 | 192 |
| 270 | Environmental disasters | 1 | 14 | 90 | 192 |
| 275 | Surveying | 1 | 13 | 399 | 280 |
| 275 | Stochastic Processes | 1 | 13 | 1798 | 1858 |
| 275 | Photogrammetry | 1 | 13 | 1840 | 1227 |
| 275 | radiocarbon dating | 1 | 13 | 197 | 257 |
| 275 | Water quality management | 2 | 13 | 2698 | 3983 |
| 275 | Marine mammals | 1 | 13 | 578 | 730 |
| 281 | Marine Meteorology | 1 | 12 | 656 | 826 |
| 281 | Micropaleontology | 3 | 12 | 114 | 318 |
| 281 | Population Genetics | 1 | 12 | 2320 | 3045 |
| 281 | Ocean-atmosphere interaction | 1 | 12 | 220 | 220 |
| 281 | oceans | 1 | 12 | 30 | 34 |
| 281 | ocean temperature | 1 | 12 | 31 | 37 |
| 281 | fishing industry | 3 | 12 | 212 | 567 |
| 281 | Continental shelf | 2 | 12 | 604 | 1094 |
| 289 | Optics | 3 | 11 | 5575 | 6985 |
| 289 | Photography | 2 | 11 | 2709 | 2044 |
| 289 | Land use | 1 | 11 | 2175 | 2854 |
| 289 | soil conservation | 1 | 11 | 1603 | 2097 |
| 289 | land degradation | 1 | 11 | 1073 | 1516 |
| 289 | degradation | 1 | 11 | 1073 | 1516 |
| 295 | Environmental Chemistry | 1 | 10 | 4062 | 5072 |
| 295 | greenhouse effect | 1 | 10 | 191 | 347 |
| 295 | Carbon | 1 | 10 | 2396 | 3188 |
| 295 | Carbon dioxide | 1 | 10 | 191 | 347 |
| 295 | Birds | 2 | 10 | 1698 | 2273 |
| 300 | Agricultural Engineering | 1 | 9 | 1088 | 1393 |
| 300 | Biomass Energy | 1 | 9 | 4271 | 5374 |
| 300 | Superconductors | 3 | 9 | 800 | 1349 |
| 300 | energy development | 2 | 9 | 1300 | 2632 |
| 300 | Maps | 1 | 9 | 386 | 537 |
| 305 | Paleobiology | 1 | 8 | 739 | 892 |
| 305 | epidemiologic methods | 1 | 8 | 437 | 645 |
| 305 | supercritical fluids | 1 | 8 | 764 | 1244 |
| 305 | California | 1 | 8 | 911 | 1151 |
| 309 | Nanochemistry | 1 | 7 | 2275 | 3086 |
| 309 | Raman spectroscopy | 1 | 7 | 1649 | 2352 |
| 309 | Crystallography | 1 | 7 | 2965 | 2947 |
| 309 | Infrared spectroscopy | 1 | 7 | 814 | 1292 |
| 309 | Entomology | 1 | 7 | 4158 | 4754 |
| 314 | Agronomy | 1 | 6 | 1161 | 1771 |
| 314 | Sustainable agriculture | 1 | 6 | 1584 | 2334 |
| 314 | Entropy | 1 | 6 | 2199 | 2833 |
| 314 | Algal blooms | 2 | 6 | 448 | 1059 |
| 314 | Cyanobacteria | 2 | 6 | 448 | 1059 |
| 314 | microalgae | 2 | 6 | 448 | 1059 |
| 320 | Electrical Engineering | 4 | 5 | 3673 | 6062 |
| 320 | Operations Research | 1 | 5 | 3744 | 4597 |
| 320 | Freshwater invertebrates | 1 | 5 | 453 | 794 |
| 320 | Ecosystem management | 1 | 5 | 1427 | 2113 |
| 320 | Nonlinear systems | 1 | 5 | 1190 | 1561 |
| 325 | Radiology | 2 | 4 | 2585 | 4151 |
| 325 | History | 1 | 4 | 2040 | 1418 |
| 325 | Information Systems | 1 | 4 | 3096 | 4466 |
| 325 | Critical Care | 1 | 4 | 3277 | 4560 |
| 325 | Plant Ecology | 1 | 4 | 3025 | 4288 |
| 325 | cosmic rays | 2 | 4 | 736 | 1439 |
| 325 | Animal ecology | 1 | 4 | 2153 | 2992 |
| 325 | nuclear magnetic resonance | 1 | 4 | 2021 | 2676 |
| 325 | Superconductivity | 1 | 4 | 916 | 1239 |
| 325 | Magnetic Resonance Spectroscopy | 1 | 4 | 2245 | 2981 |
| 325 | Paleobotany | 1 | 4 | 375 | 650 |
| 325 | Vegetation dynamics | 1 | 4 | 356 | 627 |
| 325 | Mountains | 1 | 4 | 942 | 1382 |
| 338 | Ichthyology | 1 | 3 | 1030 | 1484 |
| 338 | Travel | 1 | 3 | 2058 | 3161 |
| 338 | Fish | 1 | 3 | 809 | 1235 |
| 341 | Food Science | 1 | 2 | 503 | 1031 |
| 341 | Structural design | 1 | 2 | 1593 | 2384 |
| 341 | Waste management | 1 | 2 | 2716 | 4118 |
| 341 | Water Purification | 1 | 2 | 2184 | 3410 |
| 341 | Ornithology | 1 | 2 | 1798 | 2427 |
| 341 | Food | 1 | 2 | 5572 | 7822 |
| 341 | scientific research | 1 | 2 | 161 | 252 |
| 341 | energy resources | 1 | 2 | 2487 | 3928 |
| 349 | Sustainable Development | 1 | 1 | 4131 | 6292 |
| 349 | Engineering Mathematics | 1 | 1 | 4448 | 5968 |
| 349 | Polymers | 1 | 1 | 6973 | 9167 |
| 349 | Numerical Analysis | 1 | 1 | 3905 | 5260 |
| 349 | polymerization | 1 | 1 | 5972 | 7824 |
| 349 | mathematical concepts | 1 | 1 | 893 | 1556 |
| 355 | Plant Taxonomy | 1 | 0 | 825 | 1347 |
| 355 | Child | 2 | 0 | 3934 | 7262 |
| 355 | Adolescent | 2 | 0 | 3449 | 6600 |
| 355 | lasers | 1 | 0 | 3464 | 4779 |
