| 1 | Geology | 1,493 | 44.2K | 10 | 32 |
| 2 | Geophysics | 1,619 | 42.8K | 39 | 98 |
| 3 | Science | 195 | 14.6K | 1578 | 1568 |
| 4 | Biology | 97 | 11.4K | 2444 | 1793 |
| 5 | Physics | 120 | 11.1K | 2341 | 1975 |
| 6 | Geochemistry | 263 | 9.4K | 105 | 164 |
| 7 | Natural history | 62 | 9.2K | 864 | 1246 |
| 8 | Planets | 172 | 6.5K | 193 | 240 |
| 9 | Astronomy | 113 | 6.4K | 743 | 697 |
| 10 | Earth Sciences | 129 | 6.0K | 318 | 298 |
| 11 | Seismology | 126 | 5.9K | 28 | 20 |
| 12 | Earthquakes | 240 | 5.2K | 6 | 7 |
| 13 | Earthquake Engineering | 193 | 3.2K | 47 | 129 |
| 14 | Geomagnetism | 122 | 3.2K | 34 | 42 |
| 15 | Volcanoes | 65 | 3.2K | 20 | 13 |
| 16 | Microbial Ecology | 29 | 3.0K | 778 | 540 |
| 17 | United States | 83 | 3.0K | 961 | 774 |
| 18 | Microbiology | 30 | 2.6K | 3063 | 2111 |
| 19 | Hydrogeology | 105 | 2.5K | 15 | 19 |
| 20 | Ecology | 36 | 2.5K | 2451 | 1968 |
| 21 | Paleontology | 54 | 2.4K | 246 | 122 |
| 22 | Geodynamics | 56 | 2.3K | 103 | 112 |
| 23 | Paleoclimatology | 49 | 2.2K | 169 | 151 |
| 24 | Geothermal Energy | 89 | 2.1K | 4 | 5 |
| 25 | Paleoecology | 45 | 2.0K | 161 | 130 |
| 25 | Meteorites | 42 | 2.0K | 276 | 315 |
| 27 | natural disasters | 53 | 2.0K | 69 | 84 |
| 28 | Paleogeography | 43 | 1.9K | 124 | 123 |
| 29 | Mineralogy | 54 | 1.9K | 289 | 270 |
| 30 | Chemistry | 38 | 1.8K | 4298 | 3806 |
| 31 | hazard mitigation | 41 | 1.8K | 46 | 33 |
| 32 | Petroleum Geology | 51 | 1.7K | 47 | 66 |
| 33 | Cosmochemistry | 36 | 1.7K | 129 | 114 |
| 34 | Hydrology | 38 | 1.6K | 699 | 541 |
| 35 | Environmental Engineering | 19 | 1.6K | 1795 | 1057 |
| 36 | Marine Geology | 44 | 1.5K | 57 | 70 |
| 37 | Meteorology | 34 | 1.5K | 729 | 784 |
| 38 | Biogeochemistry | 30 | 1.5K | 337 | 364 |
| 39 | Geomorphology | 43 | 1.5K | 225 | 315 |
| 40 | Climatology | 33 | 1.3K | 555 | 562 |
| 41 | Sedimentary rocks | 30 | 1.2K | 54 | 55 |
| 42 | Ecological Engineering | 7 | 1.2K | 365 | 67 |
| 43 | Environment | 26 | 1.2K | 2161 | 2641 |
| 44 | Organic Geochemistry | 19 | 1.2K | 96 | 88 |
| 45 | Water | 21 | 1.1K | 1054 | 1078 |
| 46 | Petrology | 36 | 1.1K | 275 | 345 |
| 47 | Engineering Geology | 34 | 1.1K | 334 | 358 |
| 48 | Environmental Microbiology | 6 | 1.1K | 1126 | 507 |
| 49 | Ore deposits | 24 | 1.1K | 121 | 104 |
| 50 | Atmospheric Physics | 20 | 1.0K | 740 | 632 |
| 51 | Landslides | 33 | 1.0K | 18 | 38 |
| 52 | Nanotechnology | 25 | 925 | 2340 | 2375 |
| 53 | Botany | 37 | 905 | 1475 | 1794 |
| 54 | Pollution | 19 | 860 | 2922 | 2890 |
| 55 | Volcanology | 29 | 836 | 2 | 3 |
| 56 | emergency management | 25 | 800 | 101 | 109 |
| 57 | Materials | 20 | 784 | 3270 | 2840 |
| 58 | cryosphere | 8 | 772 | 258 | 164 |
| 59 | Paleoceanography | 11 | 674 | 83 | 104 |
| 60 | Water pollution | 10 | 662 | 1832 | 1382 |
| 61 | Risk Management | 10 | 624 | 334 | 171 |
| 62 | Environmental Health | 16 | 623 | 3164 | 3121 |
| 63 | Sedimentology | 18 | 620 | 143 | 171 |
| 64 | rivers | 1 | 584 | 676 | 61 |
| 65 | air quality management | 10 | 583 | 188 | 112 |
| 66 | Microorganisms | 8 | 575 | 832 | 715 |
| 67 | Medicine | 14 | 556 | 7896 | 7169 |
| 68 | Plate Tectonics | 12 | 543 | 91 | 47 |
| 69 | Structural dynamics | 9 | 541 | 653 | 467 |
| 70 | Technology | 18 | 521 | 2188 | 1817 |
| 71 | Physical Geography | 5 | 503 | 458 | 124 |
| 72 | sedimentary basins | 11 | 493 | 60 | 55 |
| 73 | water supply | 13 | 492 | 458 | 517 |
| 74 | Australia | 28 | 467 | 502 | 597 |
| 75 | Biodiversity conservation | 6 | 462 | 1470 | 1415 |
| 76 | Agricultural Chemistry | 10 | 453 | 1590 | 1244 |
| 77 | Biogeography | 5 | 440 | 879 | 779 |
| 78 | Atmospheric Chemistry | 12 | 398 | 588 | 746 |
| 79 | Climate change | 5 | 395 | 962 | 1244 |
| 79 | Eutrophication | 5 | 395 | 928 | 1235 |
| 81 | Nanostructured Materials | 14 | 377 | 1925 | 2090 |
| 82 | biological evolution | 4 | 368 | 2260 | 1652 |
| 83 | Geodesy | 5 | 365 | 627 | 232 |
| 83 | space environment | 14 | 365 | 98 | 102 |
| 85 | atmospheric models | 8 | 364 | 505 | 514 |
| 86 | Astrophysics | 4 | 362 | 3307 | 2180 |
| 87 | Probability | 4 | 342 | 605 | 289 |
| 87 | Financial management | 4 | 342 | 494 | 304 |
| 87 | Risk | 4 | 342 | 558 | 309 |
| 90 | Geography | 10 | 335 | 1497 | 1248 |
| 91 | Research | 11 | 334 | 7301 | 7051 |
| 92 | sanitation | 8 | 333 | 1150 | 1516 |
| 93 | Evolution | 3 | 326 | 2374 | 1440 |
| 94 | Public Health | 4 | 320 | 6896 | 4260 |
| 94 | Soil Science | 9 | 320 | 1248 | 1183 |
| 96 | Africa | 3 | 305 | 2019 | 493 |
| 96 | Middle East | 3 | 305 | 1168 | 223 |
| 98 | Emergency Medical Services | 7 | 303 | 554 | 265 |
| 99 | Marine Biology | 7 | 301 | 2095 | 1785 |
| 100 | Radioisotopes | 11 | 279 | 678 | 465 |
| 101 | food technology | 9 | 270 | 1752 | 1867 |
| 102 | Quality Control | 8 | 267 | 1165 | 1052 |
| 102 | food handling | 8 | 267 | 490 | 594 |
| 104 | Groundwater | 12 | 253 | 314 | 342 |
| 105 | Environmental Geology | 9 | 234 | 965 | 1075 |
| 106 | ecosystem | 5 | 231 | 1251 | 1265 |
| 107 | clay | 4 | 224 | 753 | 621 |
| 108 | Isotopes | 2 | 210 | 170 | 24 |
| 109 | Asia | 6 | 205 | 2484 | 1418 |
| 110 | Mass Spectrometry | 8 | 203 | 883 | 927 |
| 111 | Petroleum Engineering | 9 | 198 | 466 | 492 |
| 112 | Composite Materials | 6 | 190 | 2317 | 2467 |
| 113 | Hydraulic Engineering | 4 | 188 | 930 | 635 |
| 113 | Semiconductors | 2 | 188 | 2916 | 1309 |
| 115 | Data Mining | 4 | 187 | 1744 | 1467 |
| 115 | Nanoparticles | 7 | 187 | 1481 | 1663 |
| 115 | data collection | 4 | 187 | 1105 | 1052 |
| 118 | Ocean Engineering | 6 | 184 | 1352 | 1329 |
| 119 | Malaria | 2 | 182 | 1122 | 571 |
| 120 | Materials Science | 12 | 181 | 3184 | 4003 |
| 121 | clay minerals | 2 | 177 | 407 | 225 |
| 122 | Solid State Physics | 15 | 172 | 2388 | 2890 |
| 123 | Catalysis | 6 | 171 | 3047 | 3238 |
| 123 | Environmental monitoring | 6 | 171 | 3542 | 4075 |
| 123 | freshwater biology | 4 | 171 | 933 | 715 |
| 126 | Environmental Policy | 5 | 169 | 3177 | 3613 |
| 127 | Archaeology | 6 | 165 | 1128 | 882 |
| 127 | Molecular Biology | 3 | 165 | 9453 | 8320 |
| 129 | Antarctica | 10 | 164 | 236 | 264 |
| 130 | Zoology | 11 | 159 | 1769 | 1962 |
| 131 | Sites | 5 | 156 | 471 | 582 |
| 132 | Extreme environments | 5 | 154 | 149 | 218 |
| 133 | Condensed Matter | 15 | 152 | 2181 | 2719 |
| 134 | animals | 9 | 150 | 805 | 846 |
| 135 | Fluid Mechanics | 5 | 147 | 1618 | 1334 |
| 136 | Biogeochemical cycles | 5 | 145 | 393 | 703 |
| 136 | Marine Geophysics | 5 | 145 | 184 | 130 |
| 138 | Fluid Dynamics | 4 | 139 | 1210 | 943 |
| 139 | Oceanography | 9 | 138 | 1335 | 1760 |
| 140 | Molecular Microbiology | 1 | 136 | 1685 | 1239 |
| 141 | Smart Materials | 6 | 133 | 686 | 744 |
| 142 | Environmental Geochemistry | 6 | 132 | 292 | 371 |
| 142 | global environmental change | 4 | 132 | 879 | 1101 |
| 144 | Soil dynamics | 11 | 130 | 189 | 413 |
| 145 | Biochemistry | 4 | 127 | 9351 | 8958 |
| 145 | soil microbiology | 4 | 127 | 1498 | 2104 |
| 145 | Soil biology | 4 | 127 | 916 | 1213 |
| 145 | actuators | 1 | 127 | 3746 | 2395 |
| 145 | transducers | 1 | 127 | 3746 | 2395 |
| 150 | Marine Pollution | 2 | 121 | 1752 | 1454 |
| 151 | Psychiatry | 1 | 115 | 7999 | 5050 |
| 151 | Palynology | 8 | 115 | 96 | 147 |
| 153 | environmental pollution | 3 | 114 | 5337 | 5363 |
| 153 | Agriculture | 4 | 114 | 2553 | 2348 |
| 155 | nanoscience | 4 | 113 | 3045 | 3373 |
| 156 | Nanostructures | 4 | 108 | 2347 | 2520 |
| 157 | Fisheries | 6 | 106 | 1446 | 1693 |
| 158 | exobiology | 2 | 105 | 501 | 469 |
| 159 | Genomics | 2 | 99 | 4979 | 4305 |
| 159 | Renewable Energy Sources | 3 | 99 | 3124 | 3853 |
| 161 | Engineering | 9 | 98 | 3405 | 4069 |
| 162 | Social Sciences | 8 | 96 | 2846 | 3043 |
| 163 | Solar System | 1 | 94 | 1382 | 945 |
| 164 | Greenhouse gases | 2 | 93 | 492 | 504 |
| 165 | Natural resources | 2 | 92 | 1106 | 976 |
| 165 | Hydrodynamics | 2 | 92 | 804 | 700 |
| 167 | Biodiversity | 2 | 83 | 3341 | 2883 |
| 168 | Analytical Chemistry | 2 | 80 | 6053 | 5277 |
| 168 | Energy Conversion | 1 | 80 | 2064 | 1827 |
| 168 | Energy Storage | 1 | 80 | 2251 | 1524 |
| 168 | fuel cells | 1 | 80 | 2151 | 1725 |
| 168 | energy development | 7 | 80 | 503 | 1252 |
| 173 | Diabetes mellitus | 1 | 79 | 4120 | 3361 |
| 173 | Diabetes | 1 | 79 | 4212 | 3429 |
| 175 | Chemical analysis | 1 | 78 | 2286 | 1538 |
| 176 | Statistical physics | 11 | 77 | 2547 | 3720 |
| 177 | Epidemiology | 2 | 76 | 5984 | 5296 |
| 178 | Radiation | 11 | 73 | 1375 | 2489 |
| 179 | Metallic Glasses | 1 | 68 | 857 | 553 |
| 180 | Chemical Oceanography | 1 | 64 | 578 | 571 |
| 181 | Scandinavia | 1 | 63 | 1308 | 739 |
| 182 | environmental protection | 4 | 61 | 3934 | 5321 |
| 182 | Transport | 1 | 61 | 1252 | 1013 |
| 182 | Sea | 1 | 61 | 1127 | 843 |
| 182 | Fishery resources | 1 | 61 | 1258 | 926 |
| 186 | weather forecasting | 1 | 60 | 427 | 339 |
| 186 | Spectrum analysis | 2 | 60 | 5826 | 5454 |
| 188 | Manufacturing Processes | 1 | 59 | 3946 | 2824 |
| 188 | Molecular Genetics | 3 | 59 | 2565 | 3345 |
| 190 | Humanities | 2 | 57 | 2898 | 1587 |
| 191 | Microscopy | 1 | 55 | 3342 | 1982 |
| 192 | Mathematics | 4 | 54 | 6388 | 5850 |
| 193 | Clinical Chemistry | 1 | 53 | 5352 | 4599 |
| 193 | Electrophoresis | 1 | 53 | 3176 | 2538 |
| 193 | Chromatography | 1 | 53 | 3154 | 2360 |
| 193 | disaster relief | 2 | 53 | 332 | 374 |
| 193 | Chromatographic analysis | 1 | 53 | 3596 | 2536 |
| 198 | Mining Geology | 2 | 47 | 130 | 105 |
| 198 | Molecular evolution | 2 | 47 | 2676 | 3097 |
| 198 | Climate | 2 | 47 | 902 | 1129 |
| 198 | Phylogeny | 2 | 47 | 1310 | 1692 |
| 202 | Optical materials | 1 | 46 | 4087 | 3853 |
| 202 | Aquatic ecology | 2 | 46 | 1408 | 1437 |
| 204 | Nuclear Chemistry | 7 | 45 | 844 | 1275 |
| 204 | Radiochemistry | 7 | 45 | 787 | 1150 |
| 204 | Aerosols | 2 | 45 | 851 | 897 |
| 207 | Environmental Management | 4 | 44 | 3071 | 5150 |
| 207 | Mollusks | 12 | 44 | 48 | 237 |
| 209 | Chemical Engineering | 1 | 39 | 7092 | 6420 |
| 209 | Geobiology | 3 | 39 | 572 | 935 |
| 211 | Remote Sensing | 2 | 37 | 2209 | 1877 |
| 211 | Rock deformation | 2 | 37 | 297 | 432 |
| 211 | Nonlinear Dynamics | 2 | 37 | 2867 | 3006 |
| 214 | vibration | 4 | 36 | 1293 | 1881 |
| 214 | air | 1 | 36 | 371 | 410 |
| 214 | Developing countries | 1 | 36 | 4890 | 3997 |
| 217 | Biotechnology | 4 | 33 | 6822 | 9885 |
| 217 | Foraminifera | 4 | 33 | 63 | 166 |
| 219 | Rural Development | 1 | 31 | 1252 | 991 |
| 219 | Geographic information systems | 3 | 31 | 1309 | 1723 |
| 219 | Biocompatible Materials | 1 | 31 | 6086 | 6480 |
| 219 | miniaturization | 3 | 31 | 2242 | 3537 |
| 223 | Rock Mechanics | 3 | 30 | 1015 | 1485 |
| 224 | Agricultural Ecology | 2 | 29 | 1680 | 2566 |
| 224 | Molecular ecology | 2 | 29 | 1615 | 2628 |
| 224 | plasma spraying | 2 | 29 | 377 | 483 |
| 227 | Nanoelectronics | 1 | 28 | 1652 | 1298 |
| 227 | Mathematical Physics | 1 | 28 | 4959 | 3694 |
| 227 | Microelectronics | 1 | 28 | 3140 | 3096 |
| 227 | Japan | 10 | 28 | 1400 | 3248 |
| 231 | Structural Engineering | 2 | 27 | 2234 | 2497 |
| 231 | aerosol | 1 | 27 | 821 | 780 |
| 233 | Surface Chemistry | 7 | 26 | 3111 | 6017 |
| 233 | Thin Films | 7 | 26 | 334 | 983 |
| 235 | Geotechnical Engineering | 2 | 25 | 730 | 935 |
| 235 | Soil Mechanics | 2 | 25 | 1561 | 1888 |
| 235 | Electronics | 2 | 25 | 4953 | 4869 |
| 235 | Electrochemistry | 5 | 25 | 3725 | 5364 |
| 239 | Systems Biology | 1 | 24 | 3275 | 3668 |
| 240 | Statistical Mechanics | 6 | 23 | 986 | 1598 |
| 240 | China | 3 | 23 | 3663 | 5383 |
| 242 | Economics | 1 | 22 | 6837 | 5692 |
| 242 | Porous materials | 3 | 22 | 888 | 1395 |
| 242 | concrete | 1 | 22 | 1778 | 2021 |
| 242 | Cement | 1 | 22 | 1122 | 1369 |
| 242 | finance | 1 | 22 | 3906 | 3452 |
| 247 | Underwater Archaeology | 1 | 21 | 284 | 164 |
| 247 | Emergency Medicine | 1 | 21 | 3235 | 3120 |
| 247 | Communication in politics | 2 | 21 | 346 | 440 |
| 250 | Glaciology | 2 | 20 | 304 | 466 |
| 250 | Electromagnetism | 2 | 20 | 1125 | 1366 |
| 250 | Magnetic Materials | 2 | 20 | 1971 | 2524 |
| 250 | glaciers | 2 | 20 | 275 | 436 |
| 254 | Emergency Nursing | 1 | 19 | 405 | 426 |
| 254 | Metallurgy | 1 | 19 | 4317 | 4002 |
| 254 | Metals | 1 | 19 | 3890 | 3800 |
| 257 | Computational Biology | 1 | 17 | 5786 | 6119 |
| 257 | Photochemistry | 1 | 17 | 3360 | 3816 |
| 257 | Light | 1 | 17 | 1968 | 2445 |
| 260 | Environmental Economics | 1 | 16 | 997 | 1096 |
| 260 | Combinatorial chemistry | 1 | 16 | 1810 | 2337 |
| 262 | Biomedical Engineering | 2 | 15 | 7366 | 9589 |
| 262 | Planetary Science | 4 | 15 | 562 | 1106 |
| 262 | Cartography | 5 | 15 | 414 | 898 |
| 262 | Plant physiology | 1 | 15 | 3524 | 4275 |
| 262 | pollutants | 1 | 15 | 3579 | 4485 |
| 262 | Environmental pollutants | 1 | 15 | 4218 | 5118 |
| 262 | Latin America | 2 | 15 | 1884 | 1767 |
| 262 | Host-parasite interactions | 1 | 15 | 2501 | 3424 |
| 262 | Plant diseases | 1 | 15 | 3329 | 3589 |
| 262 | DNA | 2 | 15 | 966 | 1662 |
| 262 | Ecological disturbances | 1 | 15 | 84 | 180 |
| 262 | Environmental disasters | 1 | 15 | 84 | 180 |
| 274 | Civil Engineering | 1 | 14 | 3290 | 2873 |
| 274 | Prospecting | 1 | 14 | 236 | 271 |
| 276 | Surveying | 1 | 13 | 381 | 270 |
| 276 | Stochastic Processes | 1 | 13 | 1798 | 1872 |
| 276 | Photogrammetry | 1 | 13 | 1836 | 1246 |
| 276 | radiocarbon dating | 1 | 13 | 195 | 255 |
| 276 | Water quality management | 2 | 13 | 2699 | 4012 |
| 276 | Marine mammals | 1 | 13 | 569 | 715 |
| 282 | Marine Meteorology | 1 | 12 | 644 | 808 |
| 282 | Micropaleontology | 3 | 12 | 107 | 310 |
| 282 | Population Genetics | 1 | 12 | 2327 | 3069 |
| 282 | Ocean-atmosphere interaction | 1 | 12 | 225 | 230 |
| 282 | oceans | 1 | 12 | 29 | 34 |
| 282 | ocean temperature | 1 | 12 | 30 | 37 |
| 282 | fishing industry | 3 | 12 | 219 | 572 |
| 282 | Continental shelf | 2 | 12 | 601 | 1085 |
| 290 | Optics | 3 | 11 | 5633 | 7077 |
| 290 | Photography | 2 | 11 | 2640 | 1986 |
| 290 | Environmental Chemistry | 1 | 11 | 4104 | 5081 |
| 290 | greenhouse effect | 1 | 11 | 181 | 338 |
| 290 | Land use | 1 | 11 | 2214 | 2936 |
| 290 | soil conservation | 1 | 11 | 1638 | 2147 |
| 290 | land degradation | 1 | 11 | 1091 | 1564 |
| 290 | Carbon | 1 | 11 | 2399 | 3171 |
| 290 | Carbon dioxide | 1 | 11 | 181 | 338 |
| 290 | Birds | 2 | 11 | 1684 | 2205 |
| 290 | Entomology | 2 | 11 | 3399 | 4406 |
| 290 | degradation | 1 | 11 | 1091 | 1564 |
| 302 | Biomass Energy | 1 | 10 | 4328 | 5388 |
| 302 | Superconductors | 3 | 10 | 809 | 1326 |
| 304 | Agricultural Engineering | 1 | 9 | 1087 | 1400 |
| 304 | Nanochemistry | 1 | 9 | 2299 | 3040 |
| 304 | Paleobiology | 1 | 9 | 733 | 864 |
| 304 | epidemiologic methods | 1 | 9 | 421 | 622 |
| 304 | Maps | 1 | 9 | 379 | 530 |
| 304 | California | 1 | 9 | 892 | 1115 |
| 310 | Crystallography | 1 | 8 | 2986 | 2869 |
| 310 | supercritical fluids | 1 | 8 | 753 | 1242 |
| 312 | Raman spectroscopy | 1 | 7 | 1657 | 2362 |
| 312 | Infrared spectroscopy | 1 | 7 | 798 | 1282 |
| 312 | Algal blooms | 2 | 7 | 440 | 1025 |
| 312 | Cyanobacteria | 2 | 7 | 440 | 1025 |
| 312 | microalgae | 2 | 7 | 440 | 1025 |
| 317 | Agronomy | 1 | 6 | 1132 | 1753 |
| 317 | Sustainable agriculture | 1 | 6 | 1600 | 2379 |
| 317 | Entropy | 1 | 6 | 2251 | 2913 |
| 320 | Electrical Engineering | 4 | 5 | 3704 | 6126 |
| 320 | History | 2 | 5 | 1619 | 1333 |
| 320 | Operations Research | 1 | 5 | 3818 | 4695 |
| 320 | Freshwater invertebrates | 1 | 5 | 433 | 769 |
| 320 | Ecosystem management | 1 | 5 | 1420 | 2130 |
| 320 | nuclear magnetic resonance | 1 | 5 | 2011 | 2593 |
| 320 | Superconductivity | 1 | 5 | 924 | 1214 |
| 320 | Magnetic Resonance Spectroscopy | 1 | 5 | 2226 | 2901 |
| 320 | Mountains | 2 | 5 | 639 | 1356 |
| 320 | Nonlinear systems | 1 | 5 | 1222 | 1600 |
| 330 | Radiology | 2 | 4 | 2571 | 4159 |
| 330 | Information Systems | 1 | 4 | 3101 | 4534 |
| 330 | Critical Care | 1 | 4 | 3260 | 4579 |
| 330 | Plant Ecology | 1 | 4 | 3041 | 4340 |
| 330 | cosmic rays | 2 | 4 | 721 | 1442 |
| 330 | Animal ecology | 1 | 4 | 2139 | 2993 |
| 330 | Paleobotany | 1 | 4 | 366 | 634 |
| 330 | Vegetation dynamics | 1 | 4 | 348 | 612 |
| 338 | Ichthyology | 1 | 3 | 1017 | 1481 |
| 338 | Travel | 1 | 3 | 2041 | 3206 |
| 338 | Food | 1 | 3 | 5657 | 7815 |
| 338 | Fish | 1 | 3 | 801 | 1227 |
| 342 | Food Science | 1 | 2 | 505 | 1060 |
| 342 | Structural design | 1 | 2 | 1602 | 2425 |
| 342 | Polymers | 1 | 2 | 7003 | 9024 |
| 342 | Waste management | 1 | 2 | 2731 | 4141 |
| 342 | Water Purification | 1 | 2 | 2177 | 3413 |
| 342 | Ornithology | 1 | 2 | 1789 | 2425 |
| 342 | scientific research | 1 | 2 | 159 | 254 |
| 342 | polymerization | 1 | 2 | 6001 | 7721 |
| 342 | energy resources | 1 | 2 | 2527 | 3976 |
| 351 | Sustainable Development | 1 | 1 | 4226 | 6437 |
| 351 | Engineering Mathematics | 1 | 1 | 4542 | 6088 |
| 351 | Numerical Analysis | 1 | 1 | 4004 | 5364 |
| 351 | mathematical concepts | 1 | 1 | 894 | 1580 |
| 355 | Plant Taxonomy | 1 | 0 | 827 | 1363 |
| 355 | Child | 2 | 0 | 3949 | 7368 |
| 355 | Adolescent | 2 | 0 | 3485 | 6748 |
| 355 | lasers | 1 | 0 | 3522 | 4847 |
