| 1 | Chemistry | 443 | 12,874 | 857 | 1.1K |
| 2 | Green Chemistry | 80 | 3,145 | 169 | 213 |
| 3 | Biochemistry | 214 | 2,539 | 1.3K | 2.3K |
| 4 | Pollution | 65 | 2,521 | 1.1K | 1.3K |
| 5 | Mathematics | 476 | 2,422 | 228 | 498 |
| 6 | Sustainable Engineering | 55 | 2,317 | 181 | 187 |
| 7 | Biology | 180 | 2,287 | 1.5K | 3.9K |
| 8 | Physics | 173 | 2,086 | 1.6K | 4.0K |
| 9 | Environment | 42 | 1,961 | 1.3K | 1.6K |
| 10 | Biophysics | 125 | 1,594 | 942 | 1.5K |
| 11 | Climate change | 30 | 1,573 | 276 | 601 |
| 11 | Biodiversity conservation | 30 | 1,573 | 530 | 710 |
| 11 | Eutrophication | 30 | 1,573 | 272 | 599 |
| 14 | Nuclear Physics | 110 | 1,548 | 1.0K | 1.3K |
| 15 | Catalysis | 50 | 1,510 | 825 | 862 |
| 16 | Molecular Biology | 114 | 1,444 | 1.7K | 3.4K |
| 17 | Organic Chemistry | 66 | 1,436 | 604 | 778 |
| 18 | Quantum Gravity | 33 | 1,327 | 918 | 708 |
| 19 | Materials | 53 | 1,075 | 1.6K | 2.0K |
| 20 | Medicine | 168 | 1,062 | 1.8K | 4.9K |
| 21 | Bioorganic chemistry | 48 | 910 | 550 | 877 |
| 22 | Science | 58 | 868 | 3.5K | 6.3K |
| 23 | Data Mining | 2 | 861 | 2.4K | 414 |
| 24 | Environmental Management | 26 | 846 | 575 | 771 |
| 25 | data collection | 1 | 826 | 2.3K | 317 |
| 26 | Mathematical Physics | 131 | 704 | 235 | 639 |
| 27 | Environmental Health | 21 | 688 | 2.3K | 2.4K |
| 28 | environmental pollution | 20 | 667 | 1.6K | 1.7K |
| 29 | Ecology | 40 | 645 | 1.9K | 3.4K |
| 30 | mathematical analysis | 58 | 642 | 219 | 200 |
| 31 | Heterocyclic compounds | 136 | 576 | 27 | 94 |
| 32 | Nanotechnology | 34 | 569 | 1.8K | 2.7K |
| 32 | Heterocyclic chemistry | 136 | 569 | 16 | 26 |
| 34 | Soviet Union | 83 | 562 | 31 | 26 |
| 35 | soil conservation | 24 | 550 | 103 | 156 |
| 36 | Cosmology | 102 | 549 | 34 | 205 |
| 37 | Organometallic compounds | 24 | 546 | 356 | 417 |
| 38 | Chemical Engineering | 38 | 531 | 1.1K | 1.6K |
| 39 | Research | 27 | 529 | 4.4K | 5.3K |
| 40 | Land use | 18 | 487 | 123 | 109 |
| 40 | land degradation | 18 | 487 | 63 | 85 |
| 40 | degradation | 18 | 487 | 63 | 85 |
| 43 | Soil Science | 43 | 463 | 160 | 376 |
| 44 | synthesis | 19 | 441 | 125 | 64 |
| 45 | Pharmaceutical Technology | 18 | 431 | 500 | 646 |
| 46 | Pharmaceutical Chemistry | 34 | 427 | 1.3K | 2.3K |
| 47 | catalytic activity | 15 | 419 | 241 | 305 |
| 48 | Physical organic chemistry | 28 | 406 | 341 | 533 |
| 49 | Biotechnology | 23 | 405 | 2.8K | 4.1K |
| 50 | Physical Chemistry | 7 | 388 | 1.8K | 1.3K |
| 51 | Nanostructured Materials | 20 | 379 | 1.5K | 1.8K |
| 52 | fuel cells | 6 | 344 | 1.0K | 852 |
| 53 | Organometallic chemistry | 21 | 309 | 450 | 604 |
| 54 | Materials Science | 22 | 286 | 2.2K | 3.0K |
| 55 | Biocompatible Materials | 13 | 283 | 2.2K | 2.9K |
| 56 | Bioinorganic chemistry | 18 | 276 | 505 | 747 |
| 57 | Bioengineering | 12 | 267 | 2.5K | 3.5K |
| 58 | Plant physiology | 12 | 266 | 1.1K | 1.6K |
| 59 | Plant diseases | 22 | 262 | 720 | 1.1K |
| 60 | Geology | 40 | 260 | 811 | 1.5K |
| 61 | Soil biology | 14 | 255 | 98 | 265 |
| 61 | Soil fertility | 14 | 255 | 94 | 254 |
| 61 | Soil ecology | 14 | 255 | 95 | 255 |
| 64 | Environmental monitoring | 12 | 248 | 2.0K | 2.6K |
| 65 | nanoscience | 5 | 236 | 2.6K | 2.4K |
| 66 | Cell Biology | 10 | 233 | 3.1K | 4.1K |
| 66 | Crystal growth | 18 | 233 | 319 | 591 |
| 68 | Earth Sciences | 24 | 231 | 1.0K | 1.7K |
| 69 | Solid State Chemistry | 15 | 228 | 655 | 781 |
| 70 | Economics | 118 | 227 | 430 | 1.7K |
| 70 | Nanoparticles | 7 | 227 | 1.3K | 1.4K |
| 72 | Microbial Ecology | 3 | 219 | 2.7K | 2.4K |
| 73 | Biomedical Engineering | 45 | 217 | 1.1K | 3.3K |
| 74 | Environmental Engineering | 8 | 206 | 2.6K | 2.8K |
| 75 | Numerical Analysis | 63 | 205 | 183 | 829 |
| 76 | Microbiology | 21 | 203 | 3.5K | 6.2K |
| 77 | sanitation | 21 | 201 | 606 | 1.8K |
| 78 | Botany | 8 | 194 | 2.8K | 3.0K |
| 79 | Cytology | 11 | 191 | 3.1K | 4.3K |
| 80 | Toxicology | 16 | 189 | 2.3K | 3.7K |
| 81 | Pharmacology | 13 | 180 | 3.2K | 4.4K |
| 82 | Differential Equations | 54 | 178 | 18 | 72 |
| 83 | Clinical Chemistry | 8 | 169 | 2.0K | 2.6K |
| 84 | Sociology | 74 | 163 | 393 | 1.9K |
| 85 | soil microbiology | 8 | 159 | 763 | 1.4K |
| 86 | Neurology | 45 | 157 | 1.9K | 5.1K |
| 86 | Environmental Microbiology | 2 | 157 | 1.9K | 1.6K |
| 88 | Statistical physics | 14 | 152 | 2.0K | 2.4K |
| 89 | Aquaculture | 7 | 146 | 684 | 590 |
| 90 | Immunology | 5 | 139 | 3.7K | 4.1K |
| 91 | Nutrition | 11 | 138 | 2.9K | 4.2K |
| 92 | Mass Spectrometry | 4 | 137 | 1.4K | 1.1K |
| 93 | Natural history | 11 | 136 | 2.7K | 6.5K |
| 93 | plant communities | 4 | 136 | 1.1K | 1.2K |
| 95 | Analytical Chemistry | 32 | 135 | 1.6K | 3.8K |
| 96 | Fractional Calculus | 7 | 131 | 26 | 60 |
| 97 | Information Technology | 7 | 130 | 1.7K | 1.4K |
| 98 | Metals | 21 | 128 | 570 | 942 |
| 99 | Engineering | 24 | 125 | 1.2K | 2.5K |
| 99 | Astrophysics | 9 | 125 | 2.2K | 2.5K |
| 101 | Biochemical Engineering | 3 | 124 | 2.3K | 2.7K |
| 102 | Optical materials | 3 | 123 | 2.3K | 2.3K |
| 103 | Environmental Chemistry | 9 | 122 | 1.3K | 2.4K |
| 104 | Molecular structure | 8 | 114 | 1.3K | 2.0K |
| 105 | Fishery management | 5 | 113 | 749 | 687 |
| 106 | Quantum Chemistry | 7 | 111 | 607 | 583 |
| 107 | Inflammation | 2 | 110 | 2.0K | 1.7K |
| 107 | cell adhesion molecules | 2 | 110 | 879 | 662 |
| 107 | cytokines | 2 | 110 | 1.8K | 1.5K |
| 107 | cell interaction | 2 | 110 | 1.7K | 1.3K |
| 107 | Cell communication | 2 | 110 | 1.2K | 973 |
| 112 | Genetics | 19 | 105 | 2.0K | 5.0K |
| 113 | Mechanics | 12 | 104 | 518 | 785 |
| 114 | Solid State Physics | 11 | 103 | 2.4K | 3.0K |
| 114 | Colloids | 3 | 103 | 3.2K | 3.2K |
| 114 | China | 2 | 103 | 3.5K | 1.9K |
| 117 | Educational Technology | 19 | 102 | 377 | 1.1K |
| 118 | Calculus of Variations | 13 | 101 | 179 | 300 |
| 119 | drug therapy | 3 | 100 | 3.1K | 2.9K |
| 120 | Political Science | 106 | 98 | 172 | 1.2K |
| 120 | Plant cells | 3 | 98 | 1.3K | 1.9K |
| 122 | Biodiversity | 5 | 95 | 2.2K | 2.6K |
| 123 | Automation | 18 | 94 | 405 | 994 |
| 124 | Artificial Intelligence | 7 | 93 | 2.6K | 3.0K |
| 124 | Quantum Mechanics | 19 | 93 | 31 | 52 |
| 126 | Drug design | 5 | 91 | 1.5K | 1.9K |
| 127 | Geophysics | 8 | 89 | 2.4K | 3.4K |
| 127 | Cardiovascular system | 4 | 89 | 1.9K | 2.8K |
| 129 | Psychiatry | 37 | 88 | 1.5K | 5.0K |
| 130 | Economic History | 47 | 87 | 571 | 1.8K |
| 131 | Mental Disorders | 33 | 86 | 1.0K | 3.8K |
| 132 | Systems Engineering | 12 | 85 | 893 | 1.4K |
| 133 | Social Sciences | 49 | 84 | 679 | 2.6K |
| 134 | Biomass Energy | 5 | 82 | 1.7K | 2.5K |
| 135 | Surface Chemistry | 12 | 81 | 1.7K | 3.2K |
| 135 | Telecommunication | 2 | 81 | 2.6K | 1.1K |
| 137 | Genomics | 3 | 77 | 3.9K | 4.4K |
| 138 | viruses | 9 | 76 | 1.1K | 2.5K |
| 139 | Andrology | 2 | 75 | 959 | 794 |
| 139 | Communication | 10 | 75 | 902 | 1.3K |
| 141 | Humanities | 37 | 74 | 203 | 957 |
| 141 | Petroleum | 20 | 74 | 78 | 207 |
| 141 | Hydrocarbons | 20 | 74 | 19 | 25 |
| 144 | Nanostructures | 8 | 73 | 1.2K | 2.4K |
| 144 | Technology | 27 | 73 | 1.3K | 4.1K |
| 146 | Engineering Mathematics | 16 | 72 | 1.1K | 1.9K |
| 147 | Criminology | 35 | 71 | 193 | 839 |
| 147 | Energy Conversion | 3 | 71 | 1.3K | 1.7K |
| 147 | Cardiovascular Pharmacology | 1 | 71 | 691 | 373 |
| 147 | preventive medicine | 4 | 71 | 1.3K | 1.8K |
| 147 | Health | 4 | 71 | 2.4K | 2.9K |
| 147 | Entropy | 1 | 71 | 2.2K | 896 |
| 147 | analysis | 3 | 71 | 364 | 406 |
| 154 | Developmental Immunology | 1 | 69 | 1.5K | 1.1K |
| 154 | pollutants | 6 | 69 | 1.3K | 2.4K |
| 154 | Environmental pollutants | 6 | 69 | 1.7K | 2.7K |
| 157 | Plant Ecology | 3 | 68 | 1.6K | 2.0K |
| 158 | Atmospheric Physics | 12 | 67 | 823 | 1.9K |
| 159 | Dentistry | 9 | 66 | 338 | 562 |
| 159 | philology | 162 | 66 | 13 | 77 |
| 159 | Evolution | 5 | 66 | 1.7K | 2.7K |
| 162 | Biogeochemical cycles | 1 | 65 | 848 | 928 |
| 163 | environmental protection | 7 | 64 | 2.2K | 4.1K |
| 163 | Food | 7 | 64 | 2.2K | 3.7K |
| 165 | Hypertension | 3 | 63 | 2.2K | 3.0K |
| 165 | soil pollution | 6 | 63 | 285 | 589 |
| 165 | Therapeutics | 2 | 63 | 2.9K | 3.0K |
| 168 | Polymers | 12 | 62 | 2.8K | 4.6K |
| 168 | Knot Theory | 8 | 62 | 84 | 85 |
| 168 | Crystallography | 30 | 62 | 515 | 1.4K |
| 168 | amino acids | 2 | 62 | 922 | 936 |
| 172 | Computational Biology | 5 | 61 | 3.0K | 3.9K |
| 173 | Public Health | 46 | 60 | 1.6K | 7.5K |
| 173 | Minority Health | 1 | 60 | 168 | 38 |
| 175 | Dynamics | 4 | 58 | 1.7K | 1.6K |
| 175 | plant molecular biology | 3 | 58 | 1.7K | 2.5K |
| 177 | Computational Chemistry | 3 | 57 | 792 | 972 |
| 178 | Nonlinear Dynamics | 7 | 56 | 1.7K | 2.5K |
| 179 | Water chemistry | 7 | 55 | 107 | 425 |
| 180 | Biogeography | 3 | 54 | 1.1K | 1.8K |
| 181 | Public Policy | 2 | 53 | 2.1K | 2.1K |
| 182 | Systems Analysis | 1 | 52 | 1.6K | 1.0K |
| 182 | System analysis | 1 | 52 | 3.6K | 2.2K |
| 184 | Agriculture | 23 | 51 | 628 | 2.5K |
| 185 | Urban Policy | 1 | 50 | 836 | 580 |
| 185 | Transportation | 2 | 50 | 1.6K | 1.2K |
| 185 | urban forestry | 1 | 50 | 542 | 368 |
| 188 | miniaturization | 3 | 49 | 2.2K | 3.0K |
| 189 | Philosophy | 97 | 47 | 190 | 939 |
| 189 | Technological Innovations | 4 | 47 | 680 | 898 |
| 189 | Stem cells | 2 | 47 | 2.4K | 2.7K |
| 189 | Nanotubes | 6 | 47 | 41 | 69 |
| 193 | Orthopedics | 1 | 46 | 2.8K | 2.2K |
| 193 | Plants | 6 | 46 | 1.8K | 3.0K |
| 195 | Clinical Biochemistry | 15 | 45 | 382 | 1.7K |
| 195 | Fixed Point Theory | 4 | 45 | 237 | 196 |
| 195 | radioactive waste | 1 | 45 | 1.2K | 1.5K |
| 195 | industrial waste | 1 | 45 | 1.2K | 1.5K |
| 195 | Hazardous waste | 1 | 45 | 1.5K | 1.6K |
| 200 | Industrial Microbiology | 2 | 44 | 2.8K | 3.3K |
| 200 | environmental exposure | 3 | 44 | 2.2K | 2.9K |
| 200 | internet | 3 | 44 | 1.1K | 1.1K |
| 200 | Quantum theory | 4 | 44 | 837 | 1.0K |
| 204 | ecosystem | 3 | 42 | 1.5K | 2.3K |
| 204 | biological factors | 4 | 42 | 2.0K | 2.9K |
| 206 | polymerization | 4 | 41 | 3.6K | 4.3K |
| 207 | Mechanical Engineering | 14 | 40 | 1.1K | 2.2K |
| 207 | Geometry | 7 | 40 | 756 | 898 |
| 209 | Metabolism | 3 | 39 | 3.3K | 4.8K |
| 209 | Atmospheric Chemistry | 2 | 39 | 1.2K | 1.7K |
| 209 | Control Theory | 6 | 39 | 1.2K | 1.7K |
| 209 | Catalysts | 3 | 39 | 714 | 939 |
| 213 | Molecular Pharmacology | 1 | 38 | 1.6K | 1.7K |
| 213 | Tropical Medicine | 2 | 38 | 2.7K | 2.7K |
| 215 | Industrial Engineering | 2 | 37 | 2.5K | 2.5K |
| 215 | Manufacturing Processes | 3 | 37 | 1.9K | 2.2K |
| 215 | Production Engineering | 3 | 37 | 1.9K | 2.2K |
| 215 | Wireless Communication Systems | 4 | 37 | 1.8K | 1.9K |
| 215 | Cancer | 2 | 37 | 5.6K | 5.9K |
| 220 | Geography | 7 | 36 | 1.5K | 2.6K |
| 220 | Fluid Mechanics | 3 | 36 | 1.8K | 1.8K |
| 220 | Environmental Toxicology | 3 | 36 | 2.7K | 4.2K |
| 220 | International Relations | 19 | 36 | 362 | 1.0K |
| 220 | Statistical Mechanics | 1 | 36 | 1.9K | 1.0K |
| 220 | Magnetohydrodynamics | 1 | 36 | 508 | 418 |
| 220 | drugs | 3 | 36 | 2.6K | 3.6K |
| 227 | Education | 10 | 35 | 2.2K | 3.6K |
| 227 | Dermatology | 1 | 35 | 3.2K | 2.7K |
| 227 | Optics | 11 | 35 | 3.1K | 4.7K |
| 227 | Enteral nutrition | 2 | 35 | 1.4K | 1.8K |
| 227 | Parenteral nutrition | 2 | 35 | 1.7K | 2.1K |
| 227 | Access to Information | 1 | 35 | 428 | 334 |
| 227 | big data | 1 | 35 | 957 | 605 |
| 227 | Information management | 1 | 35 | 239 | 151 |
| 227 | Information dissemination | 1 | 35 | 428 | 334 |
| 236 | Medical Laboratory Science | 1 | 34 | 3.9K | 3.7K |
| 236 | Functional Analysis | 15 | 34 | 39 | 242 |
| 236 | Human genetics | 1 | 34 | 4.0K | 4.8K |
| 236 | Medical genetics | 1 | 34 | 4.9K | 5.1K |
| 236 | Nanobiotechnology | 1 | 34 | 897 | 1.1K |
| 236 | Biogeochemistry | 3 | 34 | 1.1K | 1.8K |
| 242 | Energy Storage | 2 | 33 | 1.6K | 1.8K |
| 243 | Human-Computer Interaction | 2 | 32 | 1.9K | 2.1K |
| 243 | Reproduction | 4 | 32 | 2.4K | 3.7K |
| 243 | computer networks | 2 | 32 | 2.4K | 2.1K |
| 243 | environmental issues | 4 | 32 | 348 | 900 |
| 247 | Substance Abuse | 1 | 31 | 2.5K | 2.2K |
| 247 | natural products | 4 | 31 | 1.7K | 2.5K |
| 249 | Clinical Pharmacology | 2 | 30 | 2.3K | 2.8K |
| 249 | Public Administration | 9 | 30 | 780 | 1.6K |
| 249 | Microorganisms | 2 | 30 | 1.8K | 2.7K |
| 249 | Informatics | 1 | 30 | 1.7K | 1.6K |
| 253 | Chronobiology | 4 | 28 | 225 | 538 |
| 253 | Climatology | 2 | 28 | 2.3K | 3.0K |
| 253 | Particle Physics | 3 | 28 | 704 | 708 |
| 253 | Microelectronics | 2 | 28 | 2.1K | 2.7K |
| 253 | biological clocks | 4 | 28 | 225 | 538 |
| 253 | Virology | 3 | 28 | 3.7K | 5.8K |
| 253 | bioclimatology | 2 | 28 | 1.3K | 1.7K |
| 253 | circadian rhythm | 4 | 28 | 225 | 538 |
| 253 | biological rhythms | 4 | 28 | 225 | 538 |
| 253 | Climate | 2 | 28 | 747 | 1.2K |
| 253 | weather | 2 | 28 | 690 | 1.0K |
| 253 | drug evaluation | 1 | 28 | 2.5K | 2.5K |
| 265 | Neurotoxicology | 1 | 27 | 1.1K | 1.3K |
| 265 | food technology | 4 | 27 | 2.0K | 3.5K |
| 265 | Bioinformatics | 5 | 27 | 2.0K | 3.7K |
| 268 | Horticulture | 5 | 26 | 459 | 945 |
| 268 | Operations Research | 9 | 26 | 1.1K | 2.5K |
| 268 | Plasma chemistry | 1 | 26 | 790 | 770 |
| 268 | Ceramic materials | 1 | 26 | 1.6K | 1.3K |
| 268 | Plasma polymerization | 1 | 26 | 560 | 553 |
| 273 | economic forecasting | 3 | 25 | 63 | 72 |
| 273 | Safety management | 3 | 25 | 550 | 885 |
| 275 | Histology | 3 | 24 | 2.3K | 3.7K |
| 275 | Obstetrics | 5 | 24 | 2.5K | 4.2K |
| 275 | Hydrology | 8 | 24 | 1.5K | 3.4K |
| 275 | Histochemistry | 3 | 24 | 1.3K | 2.0K |
| 275 | Operator theory | 4 | 24 | 355 | 454 |
| 275 | Bifurcation Theory | 1 | 24 | 1.1K | 868 |
| 275 | toxicity testing | 1 | 24 | 1.4K | 1.6K |
| 282 | Electrical Engineering | 4 | 23 | 3.2K | 3.2K |
| 282 | Agricultural Ecology | 2 | 23 | 1.6K | 2.5K |
| 282 | Immune system | 1 | 23 | 2.1K | 2.5K |
| 282 | Immunity | 1 | 23 | 3.6K | 4.2K |
| 286 | Physiology | 12 | 22 | 2.7K | 7.0K |
| 286 | Intelligent Transportation Systems | 1 | 22 | 1.3K | 1.1K |
| 286 | Neurochemistry | 8 | 22 | 1.7K | 4.1K |
| 286 | Algebra | 6 | 22 | 765 | 962 |
| 286 | Composite Materials | 3 | 22 | 1.5K | 2.2K |
| 286 | United Kingdom | 2 | 22 | 2.4K | 3.2K |
| 292 | Epidemiology | 5 | 21 | 3.8K | 7.2K |
| 292 | Electronics | 6 | 21 | 2.7K | 4.3K |
| 292 | Cytogenetics | 4 | 21 | 1.8K | 3.6K |
| 292 | Immunochemistry | 1 | 21 | 1.5K | 1.6K |
| 292 | Geobiology | 1 | 21 | 947 | 1.1K |
| 292 | Biometrics | 3 | 21 | 1.3K | 2.0K |
| 292 | probabilities | 3 | 21 | 1.0K | 1.1K |
| 299 | Law | 28 | 20 | 399 | 1.3K |
| 299 | Linguistics | 17 | 20 | 544 | 1.5K |
| 299 | Queuing Theory | 2 | 20 | 212 | 290 |
| 299 | Plastics | 3 | 20 | 1.7K | 2.4K |
| 299 | hygiene | 16 | 20 | 91 | 1.1K |
| 304 | Computer Graphics | 1 | 19 | 2.1K | 2.0K |
| 304 | Cybernetics | 2 | 19 | 1.6K | 2.2K |
| 304 | Circadian rhythms | 1 | 19 | 491 | 562 |
| 304 | Geopolitics | 8 | 19 | 48 | 314 |
| 304 | Spectrum analysis | 8 | 19 | 2.7K | 5.8K |
| 304 | lasers | 7 | 19 | 1.1K | 2.1K |
| 310 | Environmental Policy | 1 | 18 | 4.8K | 5.6K |
| 310 | Chemotherapy | 1 | 18 | 3.0K | 3.4K |
| 310 | Quantum electronics | 5 | 18 | 849 | 1.3K |
| 310 | Stochastic Processes | 2 | 18 | 1.1K | 1.5K |
| 310 | Food Preservation | 2 | 18 | 923 | 1.1K |
| 310 | energy conservation | 1 | 18 | 2.3K | 2.3K |
| 310 | Fractals | 3 | 18 | 335 | 731 |
| 310 | Asia | 10 | 18 | 1.2K | 3.8K |
| 310 | Eurasia | 1 | 18 | 312 | 289 |
| 319 | Agronomy | 2 | 17 | 695 | 1.2K |
| 319 | Human Rights | 7 | 17 | 269 | 930 |
| 319 | cryosphere | 2 | 17 | 531 | 830 |
| 319 | conflict management | 7 | 17 | 148 | 657 |
| 323 | Paleoecology | 1 | 16 | 671 | 740 |
| 323 | Plant Genetics | 1 | 16 | 1.3K | 1.7K |
| 323 | Language Acquisition | 1 | 16 | 790 | 791 |
| 323 | occupational health and safety | 1 | 16 | 447 | 528 |
| 323 | Organizational learning | 2 | 16 | 505 | 766 |
| 323 | industrial hygiene | 1 | 16 | 2.3K | 2.0K |
| 323 | Combinatorial optimization | 3 | 16 | 508 | 778 |
| 323 | Plant genetic engineering | 1 | 16 | 1.7K | 2.1K |
| 323 | Bilingualism | 1 | 16 | 378 | 479 |
| 323 | adolescence | 1 | 16 | 1.6K | 1.9K |
| 323 | Adolescent Psychology | 1 | 16 | 1.6K | 1.7K |
| 323 | Multilingualism | 1 | 16 | 374 | 345 |
| 323 | Knowledge management | 2 | 16 | 641 | 805 |
| 323 | Infertility | 3 | 16 | 1.3K | 2.2K |
| 323 | Russia | 21 | 16 | 46 | 170 |
| 323 | Adolescent | 1 | 16 | 4.0K | 3.9K |
| 323 | Paleobotany | 1 | 16 | 338 | 474 |
| 323 | Health Risk Assessment | 3 | 16 | 273 | 750 |
| 323 | Vegetation dynamics | 1 | 16 | 320 | 460 |
| 323 | Steroids | 1 | 16 | 1.4K | 1.8K |
| 323 | cultural pluralism | 2 | 16 | 393 | 543 |
| 323 | Europe | 5 | 16 | 2.9K | 5.2K |
| 323 | fertility | 3 | 16 | 1.4K | 2.3K |
| 346 | Health Policy | 2 | 15 | 3.5K | 5.0K |
| 346 | Neurophysiology | 9 | 15 | 2.0K | 5.1K |
| 346 | economic policy | 6 | 15 | 1.7K | 3.0K |
| 346 | Magnetic Materials | 1 | 15 | 2.3K | 2.5K |
| 346 | Communist countries | 5 | 15 | 108 | 355 |
| 346 | Economic reform | 5 | 15 | 36 | 44 |
| 346 | economic conditions | 6 | 15 | 280 | 563 |
| 346 | United States | 3 | 15 | 6.3K | 9.0K |
| 346 | Ore deposits | 2 | 15 | 359 | 613 |
| 355 | Psychology | 2 | 14 | 6.6K | 8.3K |
| 355 | Hematology | 1 | 14 | 5.6K | 5.3K |
| 355 | Developmental Biology | 2 | 14 | 2.7K | 4.2K |
| 358 | Embryology | 1 | 13 | 2.9K | 3.6K |
| 358 | Public Relations | 1 | 13 | 721 | 681 |
| 358 | Petrology | 5 | 13 | 573 | 1.3K |
| 358 | Ocean-atmosphere interaction | 9 | 13 | 28 | 165 |
| 358 | construction industry | 2 | 13 | 170 | 306 |
| 358 | cell physiology | 1 | 13 | 2.9K | 3.8K |
| 358 | Jurisprudence | 6 | 13 | 701 | 1.9K |
| 358 | biological monitoring | 1 | 13 | 1.1K | 1.6K |
| 366 | Industrial Statistics | 1 | 12 | 485 | 466 |
| 366 | Pragmatics | 2 | 12 | 85 | 88 |
| 366 | Mutagenesis | 1 | 12 | 967 | 1.3K |
| 366 | Drug delivery systems | 3 | 12 | 1.2K | 2.8K |
| 366 | mass transfer | 1 | 12 | 905 | 1.0K |
| 366 | teratogenic agents | 1 | 12 | 438 | 564 |
| 366 | Magnetic Resonance Spectroscopy | 3 | 12 | 1.4K | 2.3K |
| 366 | Molecules | 3 | 12 | 1.4K | 2.1K |
| 366 | Human physiology | 5 | 12 | 75 | 236 |
| 366 | carcinogens | 1 | 12 | 2.0K | 2.7K |
| 376 | Rheumatology | 2 | 11 | 1.9K | 2.8K |
| 376 | International Law | 11 | 11 | 137 | 368 |
| 376 | Metallurgy | 7 | 11 | 1.5K | 3.5K |
| 376 | nuclear magnetic resonance | 2 | 11 | 1.4K | 2.0K |
| 376 | Intelligent Control Systems | 1 | 11 | 2.2K | 2.1K |
| 376 | brewing | 1 | 11 | 526 | 551 |
| 376 | Iran | 1 | 11 | 388 | 261 |
| 383 | Neuropsychology | 7 | 10 | 1.6K | 4.4K |
| 383 | Mobile Computing | 2 | 10 | 1.5K | 1.9K |
| 383 | Genetic engineering | 1 | 10 | 3.7K | 4.8K |
| 383 | Psychopharmacology | 7 | 10 | 1.4K | 3.5K |
| 383 | Electrophoresis | 2 | 10 | 2.3K | 3.8K |
| 383 | Nonlinear functional analysis | 3 | 10 | 189 | 432 |
| 383 | Risk assessment | 2 | 10 | 573 | 1.0K |
| 383 | Antibacterial agents | 1 | 10 | 1.1K | 1.8K |
| 383 | ecological risk assessment | 1 | 10 | 323 | 540 |
| 383 | Chromatography | 2 | 10 | 2.3K | 3.5K |
| 383 | Ferroelectricity | 6 | 10 | 308 | 896 |
| 383 | human behavior | 1 | 10 | 3.5K | 4.7K |
| 383 | Detectors | 2 | 10 | 1.4K | 1.8K |
| 383 | Chromatographic analysis | 2 | 10 | 2.7K | 3.9K |
| 383 | Mental illness | 1 | 10 | 3.8K | 4.7K |
| 398 | Civil Engineering | 3 | 9 | 1.9K | 2.9K |
| 398 | Bioremediation | 2 | 9 | 566 | 1.5K |
| 398 | Molecular evolution | 2 | 9 | 2.4K | 4.1K |
| 398 | sustainability | 2 | 9 | 1.1K | 2.0K |
| 398 | Serbia | 1 | 9 | 342 | 238 |
| 398 | Quality of life | 1 | 9 | 2.9K | 4.1K |
| 398 | Allergy | 2 | 9 | 1.8K | 3.0K |
| 398 | cycles | 3 | 9 | 59 | 186 |
| 406 | Pathology | 1 | 8 | 4.3K | 5.5K |
| 406 | Biosensors | 1 | 8 | 1.9K | 3.0K |
| 406 | Pharmacogenetics | 1 | 8 | 2.4K | 3.1K |
| 406 | Demography | 3 | 8 | 747 | 1.7K |
| 406 | Engineering Geology | 1 | 8 | 2.0K | 2.4K |
| 406 | Molecular Genetics | 2 | 8 | 2.9K | 4.8K |
| 406 | Diagnosis | 1 | 8 | 1.4K | 1.9K |
| 406 | Functional equations | 3 | 8 | 213 | 446 |
| 406 | occupational diseases | 1 | 8 | 2.2K | 2.8K |
| 406 | Stratigraphic Correlation | 1 | 8 | 59 | 73 |
| 406 | disease susceptibility | 1 | 8 | 878 | 1.4K |
| 406 | Comparative Law | 3 | 8 | 234 | 244 |
| 406 | drug development | 1 | 8 | 2.3K | 3.4K |
| 406 | Genetic therapy | 1 | 8 | 2.7K | 3.4K |
| 406 | explosives | 1 | 8 | 469 | 522 |
| 406 | national security | 18 | 8 | 21 | 433 |
| 406 | biochemical markers | 1 | 8 | 1.8K | 2.5K |
| 406 | mathematical concepts | 2 | 8 | 582 | 1.1K |
| 406 | symptoms | 1 | 8 | 878 | 1.4K |
| 425 | Medicinal plants | 1 | 7 | 2.2K | 3.0K |
| 425 | Gerontology | 4 | 7 | 2.0K | 4.0K |
| 425 | Library Science | 2 | 7 | 1.6K | 2.0K |
| 425 | Radio | 4 | 7 | 776 | 1.5K |
| 425 | ethanol | 2 | 7 | 692 | 1.4K |
| 425 | disease outbreaks | 1 | 7 | 1.2K | 1.9K |
| 425 | Epidemics | 1 | 7 | 1.1K | 1.8K |
| 425 | health services | 2 | 7 | 1.7K | 3.2K |
| 425 | alcoholism | 2 | 7 | 2.0K | 3.5K |
| 425 | Economic security | 15 | 7 | 6 | 10 |
| 425 | Information Science | 2 | 7 | 1.8K | 3.0K |
| 425 | India | 2 | 7 | 2.5K | 3.1K |
| 425 | Aging | 4 | 7 | 2.9K | 5.7K |
| 425 | Conflict of Laws | 2 | 7 | 41 | 70 |
| 425 | Pregnancy | 1 | 7 | 1.8K | 2.5K |
| 425 | Vaccines | 1 | 7 | 2.9K | 4.0K |
| 441 | Energy Policy | 1 | 6 | 1.6K | 2.1K |
| 441 | Genetic epidemiology | 1 | 6 | 678 | 1.1K |
| 441 | Risk Management | 2 | 6 | 1.0K | 2.3K |
| 441 | p-adic numbers | 1 | 6 | 75 | 73 |
| 441 | Integrated Circuits | 1 | 6 | 1.3K | 1.3K |
| 441 | Chemical kinetics | 3 | 6 | 860 | 1.7K |
| 441 | Environmental Geochemistry | 1 | 6 | 1.2K | 1.8K |
| 441 | Algebraic number theory | 1 | 6 | 75 | 73 |
| 441 | Mycology | 4 | 6 | 1.5K | 3.5K |
| 441 | Teaching | 2 | 6 | 2.1K | 3.2K |
| 441 | Emulsions | 2 | 6 | 234 | 657 |
| 441 | Sulfur | 1 | 6 | 185 | 300 |
| 441 | heredity | 1 | 6 | 1.5K | 2.1K |
| 441 | commerce | 1 | 6 | 2.6K | 3.0K |
| 441 | Decision making | 2 | 6 | 2.1K | 3.8K |
| 441 | Fluorescence | 1 | 6 | 879 | 1.3K |
| 441 | Minerals | 1 | 6 | 1.4K | 2.1K |
| 441 | Thyroid hormones | 1 | 6 | 41 | 173 |
| 459 | Ophthalmology | 1 | 5 | 2.8K | 3.8K |
| 459 | History | 7 | 5 | 830 | 1.1K |
| 459 | Statistics | 2 | 5 | 2.9K | 4.3K |
| 459 | Meteorology | 2 | 5 | 2.9K | 5.1K |
| 459 | Nanochemistry | 1 | 5 | 2.1K | 3.0K |
| 459 | Soil Mechanics | 1 | 5 | 1.4K | 1.7K |
| 459 | Ceramics | 3 | 5 | 1.7K | 3.2K |
| 459 | Hydraulic Engineering | 4 | 5 | 682 | 1.7K |
| 459 | Analytical Biochemistry | 1 | 5 | 2.9K | 4.0K |
| 459 | Geomagnetism | 1 | 5 | 1.2K | 1.6K |
| 459 | Emergency Medicine | 1 | 5 | 2.9K | 3.7K |
| 459 | ethnicity | 2 | 5 | 894 | 1.6K |
| 459 | Sleep Disorders | 1 | 5 | 2.9K | 3.7K |
| 459 | Tourism | 1 | 5 | 2.1K | 2.8K |
| 459 | Cross-Cultural Studies | 1 | 5 | 898 | 1.4K |
| 459 | Reproductive toxicology | 1 | 5 | 723 | 1.3K |
| 459 | civilization | 9 | 5 | 759 | 1.3K |
| 459 | Eastern Europe | 4 | 5 | 736 | 1.7K |
| 459 | Hospitality industry | 1 | 5 | 725 | 1.2K |
| 459 | Africa | 8 | 5 | 791 | 3.1K |
| 459 | Learning | 1 | 5 | 2.1K | 2.8K |
| 459 | cross-cultural comparison | 1 | 5 | 974 | 1.6K |
| 459 | atmosphere | 1 | 5 | 526 | 746 |
| 459 | Respiration | 1 | 5 | 2.8K | 3.9K |
| 459 | European Union | 4 | 5 | 130 | 471 |
| 459 | Membranes | 3 | 5 | 1.1K | 2.4K |
| 459 | Culture | 4 | 5 | 848 | 2.0K |
| 459 | Venezuela | 8 | 5 | 71 | 178 |
| 459 | Sleep | 1 | 5 | 2.9K | 3.7K |
| 488 | Pharmacy | 2 | 4 | 2.9K | 5.2K |
| 488 | Computer Engineering | 1 | 4 | 638 | 777 |
| 488 | Radiation Protection | 4 | 4 | 709 | 1.8K |
| 488 | Oxidative stress | 1 | 4 | 2.2K | 3.5K |
| 488 | Health Physics | 4 | 4 | 155 | 651 |
| 488 | Cellular senescence | 1 | 4 | 1.6K | 2.7K |
| 488 | radiation monitoring | 4 | 4 | 609 | 1.7K |
| 488 | Geodesy | 3 | 4 | 538 | 1.4K |
| 488 | Diagnostic Imaging | 2 | 4 | 3.1K | 5.1K |
| 488 | Seed technology | 1 | 4 | 32 | 47 |
| 488 | Flow chemistry | 1 | 4 | 70 | 148 |
| 488 | elder abuse | 1 | 4 | 527 | 1.0K |
| 488 | patents | 1 | 4 | 276 | 595 |
| 488 | Obesity | 1 | 4 | 3.7K | 5.4K |
| 488 | Cell differentiation | 1 | 4 | 3.2K | 4.4K |
| 488 | Water Microbiology | 2 | 4 | 650 | 1.8K |
| 488 | ovary | 1 | 4 | 507 | 883 |
| 488 | Dialectical materialism | 1 | 4 | 91 | 38 |
| 488 | Japan | 1 | 4 | 3.6K | 4.4K |
| 488 | Seeds | 1 | 4 | 33 | 47 |
| 488 | Cell death | 1 | 4 | 2.2K | 3.2K |
| 488 | adhesives | 6 | 4 | 108 | 803 |
| 488 | Business communication | 1 | 4 | 278 | 407 |
| 488 | Diabetes | 1 | 4 | 4.0K | 5.7K |
| 512 | Arts | 2 | 3 | 656 | 770 |
| 512 | Literature | 19 | 3 | 292 | 785 |
| 512 | Astronomy | 6 | 3 | 2.1K | 4.2K |
| 512 | Psycholinguistics | 1 | 3 | 1.4K | 2.1K |
| 512 | Quality Control | 3 | 3 | 1.3K | 3.4K |
| 512 | Water | 1 | 3 | 3.2K | 4.6K |
| 512 | Viticulture | 3 | 3 | 120 | 392 |
| 512 | Semiconductors | 4 | 3 | 823 | 2.1K |
| 512 | Simulation Methods | 1 | 3 | 844 | 1.3K |
| 512 | Ecosystem management | 1 | 3 | 1.4K | 2.1K |
| 512 | Quantum Optics | 1 | 3 | 1.6K | 2.1K |
| 512 | Water quality management | 1 | 3 | 3.3K | 4.7K |
| 512 | preimplantation genetic diagnosis | 1 | 3 | 953 | 1.6K |
| 512 | embryo transfer | 1 | 3 | 985 | 1.6K |
| 512 | Chromosome mapping | 1 | 3 | 3.5K | 5.0K |
| 512 | Protective coatings | 5 | 3 | 81 | 602 |
| 512 | Latin America | 5 | 3 | 1.1K | 2.1K |
| 512 | Migration | 1 | 3 | 403 | 729 |
| 512 | Atomic spectroscopy | 1 | 3 | 1.6K | 2.1K |
| 512 | energy development | 1 | 3 | 1.4K | 2.2K |
| 512 | Laser Spectroscopy | 1 | 3 | 1.5K | 2.0K |
| 512 | Testing | 1 | 3 | 101 | 74 |
| 512 | Trace elements | 1 | 3 | 670 | 1.3K |
| 512 | Flow cytometry | 1 | 3 | 1.0K | 1.6K |
| 512 | gene mapping | 1 | 3 | 3.8K | 5.4K |
| 537 | Geriatrics | 3 | 2 | 3.7K | 6.9K |
| 537 | Petroleum Engineering | 8 | 2 | 294 | 1.4K |
| 537 | Immunotherapy | 1 | 2 | 3.2K | 4.8K |
| 537 | Physical Geography | 1 | 2 | 1.1K | 1.6K |
| 537 | Ethics | 1 | 2 | 1.9K | 3.0K |
| 537 | Distance Education | 1 | 2 | 842 | 1.4K |
| 537 | Children's Literature | 1 | 2 | 155 | 237 |
| 537 | Internet of Things | 1 | 2 | 1.2K | 1.6K |
| 537 | Cartography | 2 | 2 | 597 | 1.2K |
| 537 | Economic Development | 4 | 2 | 1.2K | 3.6K |
| 537 | General Surgery | 1 | 2 | 1.3K | 2.0K |
| 537 | Oral Medicine | 3 | 2 | 768 | 1.8K |
| 537 | Mathematical Linguistics | 1 | 2 | 48 | 64 |
| 537 | Biochemical Genetics | 3 | 2 | 479 | 1.5K |
| 537 | Remote Sensing | 3 | 2 | 782 | 2.3K |
| 537 | Computational Linguistics | 1 | 2 | 1.1K | 1.6K |
| 537 | Combustion | 2 | 2 | 675 | 1.4K |
| 537 | Ethnic relations | 6 | 2 | 246 | 1.1K |
| 537 | E-Learning | 1 | 2 | 95 | 206 |
| 537 | X-ray spectroscopy | 1 | 2 | 513 | 939 |
| 537 | Electrochemistry | 1 | 2 | 4.6K | 5.6K |
| 537 | Electrochemical Analysis | 1 | 2 | 1.5K | 2.3K |
| 537 | Sexual health | 2 | 2 | 1.1K | 2.0K |
| 537 | International Finance | 1 | 2 | 1.7K | 2.4K |
| 537 | Shock Waves | 1 | 2 | 397 | 656 |
| 537 | isomerism | 1 | 2 | 777 | 1.3K |
| 537 | Optoelectronic devices | 1 | 2 | 1.6K | 2.1K |
| 537 | polar regions | 1 | 2 | 1.1K | 1.7K |
| 537 | Documentation | 3 | 2 | 377 | 1.1K |
| 537 | peptides | 1 | 2 | 1.9K | 2.9K |
| 537 | Radio waves | 1 | 2 | 599 | 827 |
| 537 | Web-based instruction | 1 | 2 | 121 | 280 |
| 537 | Evolution equations | 2 | 2 | 187 | 504 |
| 537 | Population | 2 | 2 | 1.3K | 2.6K |
| 537 | biological evolution | 3 | 2 | 2.3K | 5.2K |
| 537 | Microscopy | 3 | 2 | 2.0K | 4.3K |
| 537 | Cerebellum | 1 | 2 | 636 | 1.1K |
| 537 | Europa | 1 | 2 | 834 | 1.3K |
| 537 | Peasants | 1 | 2 | 119 | 278 |
| 537 | World Wide Web | 1 | 2 | 822 | 1.4K |
| 537 | Spain | 1 | 2 | 1.5K | 1.6K |
| 537 | Chirality | 1 | 2 | 777 | 1.3K |
| 537 | Entomology | 1 | 2 | 3.8K | 5.0K |
| 537 | Cognition | 1 | 2 | 2.6K | 3.9K |
| 537 | Cerebellar ataxia | 1 | 2 | 636 | 1.1K |
| 537 | proteins | 1 | 2 | 3.8K | 5.3K |
| 583 | Oncology | 1 | 1 | 4.1K | 6.1K |
| 583 | Nursing | 17 | 1 | 698 | 5.0K |
| 583 | Applied Mathematics | 1 | 1 | 1.9K | 2.4K |
| 583 | Constitutional Law | 3 | 1 | 219 | 410 |
| 583 | Pharmacognosy | 1 | 1 | 2.7K | 4.2K |
| 583 | Information Systems | 2 | 1 | 1.7K | 4.0K |
| 583 | Genetic Toxicology | 1 | 1 | 747 | 1.4K |
| 583 | Community Psychiatry | 1 | 1 | 2.2K | 3.5K |
| 583 | Systems Biology | 1 | 1 | 3.2K | 4.9K |
| 583 | Neonatology | 1 | 1 | 1.1K | 1.9K |
| 583 | Regional Planning | 3 | 1 | 1.5K | 3.4K |
| 583 | Photonics | 1 | 1 | 2.5K | 3.7K |
| 583 | Geographic information systems | 2 | 1 | 1.4K | 3.0K |
| 583 | Infections | 1 | 1 | 2.4K | 3.8K |
| 583 | community development | 3 | 1 | 303 | 933 |
| 583 | Crystallization | 1 | 1 | 1.1K | 1.6K |
| 583 | mutation | 1 | 1 | 917 | 1.6K |
| 583 | Regionalism | 2 | 1 | 202 | 683 |
| 583 | Biodegradation | 1 | 1 | 652 | 1.3K |
| 583 | Spintronics | 1 | 1 | 100 | 265 |
| 583 | Neural circuitry | 1 | 1 | 2.3K | 3.6K |
| 583 | Child Development | 1 | 1 | 3.3K | 5.0K |
| 583 | Art and Science | 1 | 1 | 122 | 126 |
| 583 | Social Change | 2 | 1 | 529 | 1.4K |
| 583 | air quality | 1 | 1 | 532 | 1.2K |
| 583 | Molecular Spectroscopy | 1 | 1 | 2.4K | 3.6K |
| 583 | Asymmetric synthesis | 1 | 1 | 330 | 673 |
| 583 | Military readiness | 1 | 1 | 96 | 177 |
| 583 | rule of law | 3 | 1 | 36 | 173 |
| 583 | nuclear magnetic resonance spectroscopy | 1 | 1 | 1.4K | 2.1K |
| 583 | concepts | 1 | 1 | 182 | 318 |
| 583 | Bacterial infections | 1 | 1 | 1.8K | 3.0K |
| 583 | water reuse | 1 | 1 | 642 | 1.3K |
| 583 | Chemical structure | 1 | 1 | 1.1K | 1.7K |
| 583 | Pakistan | 1 | 1 | 831 | 1.0K |
| 583 | Diplomatic relations | 4 | 1 | 637 | 1.5K |
| 583 | Cellulose | 1 | 1 | 1.2K | 2.1K |
| 583 | Refractory materials | 1 | 1 | 279 | 437 |
| 583 | Prospecting | 5 | 1 | 51 | 461 |
| 583 | biological invasions | 1 | 1 | 1.1K | 1.9K |
| 583 | NMR | 1 | 1 | 1.1K | 1.7K |
| 583 | Developing countries | 2 | 1 | 2.4K | 5.1K |
| 583 | Fouling | 1 | 1 | 426 | 939 |
| 583 | magnetic resonance | 1 | 1 | 1.2K | 1.8K |
| 583 | Fisheries | 1 | 1 | 2.4K | 3.5K |
| 583 | phototherapy | 1 | 1 | 517 | 951 |
| 629 | Radiology | 1 | 0 | 2.5K | 3.6K |
| 629 | Mining Engineering | 1 | 0 | 503 | 838 |
| 629 | Archaeology | 1 | 0 | 1.7K | 2.4K |
| 629 | Urology | 1 | 0 | 3.4K | 4.8K |
| 629 | Endocrinology | 8 | 0 | 2.5K | 7.2K |
| 629 | Surgery | 2 | 0 | 3.0K | 5.1K |
| 629 | Sustainable Development | 1 | 0 | 3.3K | 5.3K |
| 629 | Religious Education | 1 | 0 | 208 | 378 |
| 629 | Intercultural Communication | 2 | 0 | 175 | 638 |
| 629 | Public Health Nursing | 16 | 0 | 6 | 23 |
| 629 | Latin American Literature | 1 | 0 | 662 | 572 |
| 629 | Rural Development | 1 | 0 | 774 | 1.3K |
| 629 | Seismology | 1 | 0 | 994 | 1.6K |
| 629 | Comparative Literature | 1 | 0 | 466 | 426 |
| 629 | Naval Architecture | 1 | 0 | 688 | 1.1K |
| 629 | Applied Linguistics | 1 | 0 | 1.1K | 1.6K |
| 629 | Mythology | 2 | 0 | 12 | 20 |
| 629 | Nuclear Fusion | 1 | 0 | 593 | 977 |
| 629 | Multicultural Education | 1 | 0 | 533 | 986 |
| 629 | Religion | 1 | 0 | 1.8K | 2.1K |
| 629 | Volcanism | 1 | 0 | 27 | 66 |
| 629 | Hydrodynamics | 1 | 0 | 534 | 959 |
| 629 | Lymphoma | 1 | 0 | 1.5K | 1.7K |
| 629 | Multiple Myeloma | 1 | 0 | 1.5K | 1.7K |
| 629 | Humanism | 1 | 0 | 149 | 182 |
| 629 | Radiobiology | 1 | 0 | 3.1K | 4.1K |
| 629 | risk factors | 1 | 0 | 1.5K | 2.2K |
| 629 | Leukemia | 1 | 0 | 2.3K | 3.0K |
| 629 | Social policy | 1 | 0 | 1.4K | 2.4K |
| 629 | Entrepreneurship | 1 | 0 | 1.6K | 2.7K |
| 629 | Cardiovascular diseases | 2 | 0 | 2.5K | 4.6K |
| 629 | Risk | 1 | 0 | 1.2K | 2.1K |
| 629 | Celestial Mechanics | 1 | 0 | 369 | 633 |
| 629 | Byzantine Empire | 1 | 0 | 37 | 47 |
| 629 | mycoses | 3 | 0 | 1.1K | 2.9K |
| 629 | Sound | 1 | 0 | 1.4K | 2.3K |
| 629 | Volcanoes | 1 | 0 | 529 | 882 |
| 629 | management | 1 | 0 | 5.0K | 7.3K |
| 629 | particles | 1 | 0 | 1.1K | 2.1K |
| 629 | Granular materials | 1 | 0 | 363 | 711 |
| 629 | drainage | 1 | 0 | 590 | 1.1K |
| 629 | Central Asia | 1 | 0 | 338 | 774 |
| 629 | technical education | 1 | 0 | 820 | 1.6K |
| 629 | Fungi | 3 | 0 | 884 | 2.2K |
| 629 | Vietnam | 1 | 0 | 360 | 668 |
| 629 | Endocrine system | 8 | 0 | 604 | 1.8K |
| 629 | Maps | 1 | 0 | 330 | 669 |
| 629 | finance | 4 | 0 | 1.6K | 3.9K |
| 629 | population geography | 1 | 0 | 567 | 1.0K |
| 629 | Credit | 4 | 0 | 69 | 467 |
| 629 | fusion reactors | 1 | 0 | 319 | 577 |
| 629 | Greece | 1 | 0 | 137 | 221 |
| 629 | standardization | 2 | 0 | 114 | 426 |
