| 1 | Astrophysics | 483 | 24.4K | 283 | 362 |
| 2 | Spectrum analysis | 249 | 17.7K | 370 | 339 |
| 3 | Astronomy | 489 | 16.0K | 246 | 342 |
| 4 | Chemistry | 680 | 15.0K | 585 | 960 |
| 5 | Biochemistry | 569 | 12.7K | 635 | 830 |
| 6 | Molecular Biology | 528 | 11.0K | 467 | 797 |
| 7 | Physics | 327 | 10.0K | 938 | 1,218 |
| 8 | Biophysics | 396 | 8.7K | 368 | 526 |
| 9 | Science | 179 | 8.2K | 1,122 | 1,265 |
| 10 | Biology | 182 | 7.7K | 1,016 | 1,265 |
| 11 | Medicine | 256 | 7.2K | 936 | 1,091 |
| 12 | Analytical Chemistry | 152 | 5.8K | 530 | 457 |
| 13 | Statistical physics | 227 | 5.2K | 362 | 417 |
| 14 | Nuclear Physics | 238 | 5.0K | 650 | 756 |
| 15 | Radiation | 98 | 4.8K | 131 | 50 |
| 16 | Microbiology | 145 | 4.7K | 820 | 991 |
| 17 | Ecology | 120 | 4.6K | 901 | 1,044 |
| 18 | human behavior | 13 | 4.5K | 1,075 | 347 |
| 19 | behavioral medicine | 5 | 4.4K | 916 | 114 |
| 20 | Research | 205 | 4.3K | 895 | 1,137 |
| 21 | radiative transfer | 50 | 4.3K | 62 | 23 |
| 22 | Chromatographic analysis | 145 | 4.1K | 48 | 28 |
| 23 | Polymers | 110 | 4.0K | 775 | 647 |
| 24 | Optics | 133 | 3.8K | 631 | 474 |
| 25 | polymerization | 99 | 3.7K | 672 | 555 |
| 26 | Biomedical Engineering | 57 | 3.6K | 1,074 | 674 |
| 27 | Colloids | 56 | 3.2K | 924 | 678 |
| 28 | Biotechnology | 110 | 3.1K | 847 | 1,129 |
| 29 | Surface Chemistry | 63 | 3.1K | 866 | 663 |
| 30 | Nervous system | 21 | 2.9K | 830 | 392 |
| 31 | Chromatography | 116 | 2.9K | 47 | 41 |
| 32 | Electrophoresis | 99 | 2.8K | 63 | 80 |
| 33 | Mathematics | 325 | 2.4K | 563 | 847 |
| 34 | Environment | 42 | 2.3K | 1,238 | 1,341 |
| 35 | Clinical Chemistry | 61 | 2.1K | 457 | 489 |
| 36 | Pollution | 56 | 2.0K | 1,252 | 1,479 |
| 37 | Natural history | 29 | 2.0K | 931 | 1,461 |
| 38 | Bioengineering | 62 | 1.9K | 817 | 1,049 |
| 39 | Membranes | 45 | 1.9K | 347 | 392 |
| 40 | Materials | 62 | 1.9K | 1,551 | 1,530 |
| 41 | Botany | 73 | 1.9K | 792 | 960 |
| 42 | Pharmaceutical Chemistry | 69 | 1.8K | 680 | 768 |
| 43 | Genetics | 18 | 1.8K | 1,328 | 896 |
| 44 | Cytology | 59 | 1.8K | 885 | 1,124 |
| 45 | Liver diseases | 7 | 1.7K | 763 | 421 |
| 46 | Renewable Energy Sources | 24 | 1.7K | 840 | 834 |
| 47 | Molecular structure | 85 | 1.6K | 201 | 404 |
| 48 | Human genetics | 14 | 1.6K | 812 | 916 |
| 49 | Catalysis | 79 | 1.6K | 827 | 1,196 |
| 50 | Cell Biology | 58 | 1.5K | 829 | 1,190 |
| 51 | Cybernetics | 4 | 1.5K | 1,347 | 328 |
| 52 | Chemical Engineering | 69 | 1.5K | 1,044 | 1,440 |
| 53 | Respiration | 14 | 1.4K | 608 | 303 |
| 54 | Nanotechnology | 50 | 1.4K | 1,294 | 1,490 |
| 55 | Plant physiology | 57 | 1.4K | 367 | 627 |
| 56 | Solid State Physics | 73 | 1.4K | 915 | 975 |
| 57 | Optical materials | 74 | 1.4K | 399 | 785 |
| 58 | Condensed Matter | 71 | 1.3K | 791 | 919 |
| 59 | Meteorology | 25 | 1.3K | 687 | 641 |
| 60 | Cancer | 26 | 1.2K | 967 | 926 |
| 61 | Mathematical Physics | 72 | 1.2K | 561 | 626 |
| 62 | environmental pollution | 36 | 1.2K | 1,260 | 1,401 |
| 63 | Pharmacology | 60 | 1.2K | 1,152 | 1,391 |
| 64 | Neurochemistry | 10 | 1.2K | 1,202 | 660 |
| 65 | Psychology | 41 | 1.2K | 1,232 | 1,121 |
| 66 | investigative techniques | 19 | 1.1K | 9 | 6 |
| 67 | Toxicology | 27 | 1.1K | 1,528 | 1,377 |
| 68 | Diagnostic Imaging | 43 | 1.1K | 339 | 424 |
| 69 | Artificial Intelligence | 52 | 1.1K | 829 | 1,039 |
| 70 | Water | 33 | 1.1K | 669 | 881 |
| 71 | Plant Ecology | 35 | 1.1K | 428 | 560 |
| 72 | Industrial Microbiology | 24 | 1.0K | 511 | 549 |
| 73 | Biodiversity conservation | 21 | 981 | 530 | 723 |
| 74 | Immunology | 27 | 979 | 953 | 1,007 |
| 75 | Physiology | 36 | 973 | 1,134 | 1,257 |
| 76 | Geography | 42 | 964 | 448 | 535 |
| 77 | Virology | 6 | 942 | 1,702 | 1,087 |
| 78 | Medical genetics | 19 | 941 | 866 | 871 |
| 79 | Microbial Ecology | 22 | 929 | 732 | 864 |
| 80 | Biocompatible Materials | 34 | 907 | 1,151 | 1,459 |
| 81 | Biogeography | 19 | 903 | 334 | 376 |
| 82 | Climatology | 36 | 886 | 417 | 557 |
| 83 | Pathology | 13 | 876 | 847 | 646 |
| 84 | Materials Science | 34 | 851 | 1,441 | 1,585 |
| 85 | Hematology | 39 | 848 | 628 | 750 |
| 86 | Breeding | 8 | 847 | 673 | 289 |
| 87 | Carbon | 25 | 845 | 321 | 530 |
| 88 | Plant breeding | 6 | 842 | 500 | 118 |
| 88 | heredity | 6 | 842 | 418 | 84 |
| 90 | Archaeology | 66 | 837 | 183 | 276 |
| 91 | Environmental monitoring | 25 | 833 | 1,336 | 1,475 |
| 92 | Neurology | 24 | 781 | 1,613 | 1,665 |
| 93 | Nanostructured Materials | 38 | 759 | 950 | 1,251 |
| 94 | Medical Laboratory Science | 16 | 751 | 767 | 741 |
| 95 | rehabilitation | 14 | 741 | 880 | 625 |
| 96 | pigments | 27 | 713 | 151 | 161 |
| 97 | Aging | 12 | 711 | 1,195 | 827 |
| 98 | Biochemical Engineering | 20 | 704 | 1,312 | 1,639 |
| 99 | Organic Chemistry | 19 | 691 | 1,389 | 1,152 |
| 100 | Hydrology | 25 | 672 | 755 | 832 |
| 101 | Climate change | 6 | 667 | 648 | 708 |
| 101 | Eutrophication | 6 | 667 | 614 | 706 |
| 103 | Quantum theory | 38 | 665 | 175 | 245 |
| 104 | free radicals | 20 | 663 | 416 | 606 |
| 105 | Neurophysiology | 15 | 658 | 1,202 | 1,104 |
| 106 | nanoscience | 22 | 651 | 1,091 | 1,267 |
| 107 | Bacteriology | 15 | 649 | 738 | 791 |
| 108 | Photonics | 9 | 628 | 1,115 | 805 |
| 108 | Dynamics | 35 | 628 | 303 | 305 |
| 110 | Neural circuitry | 13 | 625 | 954 | 704 |
| 111 | Environmental Psychology | 11 | 620 | 103 | 143 |
| 111 | Parasitology | 24 | 620 | 749 | 683 |
| 113 | Light | 6 | 612 | 629 | 540 |
| 113 | Immunity | 26 | 612 | 528 | 912 |
| 115 | Agricultural Chemistry | 15 | 608 | 942 | 840 |
| 116 | Functional Analysis | 48 | 594 | 194 | 326 |
| 117 | Soil Science | 29 | 589 | 470 | 723 |
| 118 | Plants | 22 | 585 | 687 | 865 |
| 119 | Zoology | 47 | 583 | 547 | 761 |
| 120 | Entomology | 25 | 577 | 730 | 606 |
| 121 | Geomorphology | 31 | 574 | 335 | 600 |
| 121 | Jurisprudence | 13 | 574 | 389 | 213 |
| 123 | Molecules | 51 | 573 | 291 | 491 |
| 124 | Sites | 13 | 571 | 209 | 193 |
| 125 | infection | 9 | 570 | 791 | 622 |
| 126 | Marine Biology | 34 | 563 | 737 | 1,048 |
| 126 | Medical Microbiology | 17 | 563 | 820 | 965 |
| 128 | Bioremediation | 15 | 558 | 161 | 179 |
| 129 | Social Psychology | 13 | 555 | 1,022 | 890 |
| 130 | Nuclear Engineering | 17 | 554 | 563 | 331 |
| 131 | Environmental Health | 41 | 552 | 1,400 | 2,351 |
| 132 | Soil ecology | 10 | 551 | 353 | 284 |
| 133 | Signal Transduction | 14 | 547 | 574 | 668 |
| 133 | Biodegradation | 14 | 547 | 149 | 160 |
| 135 | Calorimetry | 17 | 535 | 344 | 210 |
| 135 | Thermal analysis | 17 | 535 | 344 | 210 |
| 137 | Environmental Policy | 16 | 529 | 1,339 | 1,589 |
| 138 | Nutrition | 20 | 525 | 1,534 | 1,729 |
| 139 | Antioxidants | 8 | 516 | 392 | 404 |
| 140 | Bioorganic chemistry | 17 | 513 | 1,205 | 1,202 |
| 141 | Neurobiology | 8 | 508 | 925 | 816 |
| 142 | Serology | 10 | 501 | 153 | 84 |
| 143 | mathematical analysis | 70 | 500 | 443 | 760 |
| 144 | Formal Languages | 39 | 493 | 7 | 8 |
| 144 | Computational Complexity | 39 | 493 | 68 | 120 |
| 146 | Biomass Energy | 9 | 492 | 1,423 | 1,283 |
| 146 | Biodiversity | 16 | 492 | 858 | 900 |
| 148 | Pharmacy | 14 | 491 | 888 | 790 |
| 149 | Computational Chemistry | 18 | 486 | 163 | 253 |
| 149 | Physical Chemistry | 20 | 486 | 850 | 957 |
| 151 | Food | 15 | 480 | 1,404 | 1,466 |
| 152 | Algebra | 66 | 474 | 185 | 273 |
| 153 | Histology | 23 | 473 | 596 | 778 |
| 153 | Photochemistry | 19 | 473 | 564 | 635 |
| 155 | soil microbiology | 13 | 471 | 647 | 857 |
| 156 | Forensic Genetics | 18 | 466 | 51 | 74 |
| 156 | biochemical markers | 9 | 466 | 237 | 85 |
| 158 | Toxins | 9 | 459 | 372 | 213 |
| 159 | Oxidation-reduction | 8 | 457 | 425 | 501 |
| 160 | venom | 8 | 456 | 374 | 193 |
| 161 | freshwater biology | 36 | 451 | 102 | 321 |
| 162 | Leukemia | 8 | 449 | 495 | 476 |
| 163 | Environmental Microbiology | 20 | 443 | 397 | 755 |
| 164 | Environmental Geology | 20 | 433 | 492 | 666 |
| 165 | Metabolism | 10 | 424 | 1,184 | 1,220 |
| 166 | Tourism | 7 | 422 | 1,070 | 864 |
| 167 | Pharmacognosy | 11 | 416 | 937 | 942 |
| 167 | environmental protection | 26 | 416 | 1,118 | 1,768 |
| 167 | gene therapy | 10 | 416 | 478 | 501 |
| 167 | Genetic therapy | 12 | 416 | 449 | 481 |
| 171 | biological evolution | 14 | 409 | 879 | 1,107 |
| 172 | Genomics | 14 | 405 | 1,307 | 1,372 |
| 172 | Luminescence | 29 | 405 | 234 | 356 |
| 174 | Environmental Management | 15 | 400 | 1,309 | 1,766 |
| 175 | Immunopathology | 17 | 397 | 447 | 550 |
| 176 | Molecular Spectroscopy | 29 | 396 | 433 | 717 |
| 177 | Radiology | 39 | 390 | 233 | 398 |
| 178 | Pharmacogenetics | 9 | 389 | 434 | 402 |
| 178 | Bioinorganic chemistry | 20 | 389 | 511 | 617 |
| 178 | Biomarkers | 7 | 389 | 177 | 60 |
| 181 | Histochemistry | 19 | 387 | 319 | 382 |
| 182 | complementary therapies | 18 | 386 | 445 | 573 |
| 183 | Photobiology | 16 | 382 | 409 | 524 |
| 184 | Earth Sciences | 15 | 380 | 1,508 | 1,477 |
| 185 | Metabolic diseases | 7 | 378 | 1,206 | 1,133 |
| 186 | soil conservation | 17 | 366 | 167 | 294 |
| 187 | Endocrinology | 5 | 365 | 1,820 | 1,415 |
| 188 | Oncology | 7 | 362 | 1,171 | 1,310 |
| 189 | Ophthalmology | 6 | 361 | 1,107 | 782 |
| 190 | Reproduction | 24 | 360 | 708 | 957 |
| 191 | Public Health | 22 | 358 | 1,843 | 2,323 |
| 192 | Surface-Active Agents | 10 | 357 | 504 | 554 |
| 192 | Surface properties | 10 | 357 | 549 | 612 |
| 194 | Economics | 22 | 355 | 1,650 | 1,696 |
| 194 | Insects | 19 | 355 | 464 | 528 |
| 196 | soil pollution | 14 | 352 | 92 | 123 |
| 197 | actuators | 7 | 346 | 1,484 | 1,233 |
| 197 | transducers | 7 | 346 | 1,484 | 1,233 |
| 199 | cosmic rays | 36 | 345 | 49 | 120 |
| 200 | Statistics | 73 | 344 | 468 | 993 |
| 201 | Nanostructures | 7 | 341 | 1,309 | 1,054 |
| 202 | plant molecular biology | 16 | 337 | 592 | 985 |
| 203 | miniaturization | 6 | 331 | 1,242 | 1,101 |
| 204 | Electrochemistry | 23 | 329 | 1,633 | 1,833 |
| 205 | Cognitive Science | 16 | 323 | 566 | 871 |
| 206 | Microelectronics | 4 | 313 | 1,428 | 1,018 |
| 206 | Radiation effects | 6 | 313 | 370 | 318 |
| 208 | bioclimatology | 13 | 311 | 292 | 373 |
| 209 | System analysis | 11 | 308 | 1,262 | 1,149 |
| 210 | Energy Storage | 5 | 304 | 990 | 695 |
| 211 | Geriatrics | 6 | 302 | 1,827 | 1,240 |
| 211 | Chromosomes | 10 | 302 | 428 | 495 |
| 213 | drugs | 13 | 300 | 862 | 965 |
| 214 | Epidemiology | 14 | 298 | 1,533 | 1,668 |
| 214 | mutation | 5 | 298 | 401 | 320 |
| 216 | Zeolites | 14 | 295 | 331 | 543 |
| 217 | Forest Ecology | 12 | 294 | 468 | 584 |
| 217 | Plant diseases | 14 | 294 | 903 | 940 |
| 219 | personality | 9 | 293 | 820 | 933 |
| 220 | Electronics | 6 | 290 | 2,338 | 1,569 |
| 221 | Europe | 99 | 289 | 343 | 1,259 |
| 222 | Comparative Physiology | 9 | 288 | 427 | 414 |
| 222 | Infections | 6 | 288 | 678 | 686 |
| 224 | Primary health care | 10 | 287 | 816 | 758 |
| 224 | Magnetic Materials | 17 | 287 | 619 | 819 |
| 226 | China | 17 | 283 | 1,106 | 1,315 |
| 227 | Plant hormones | 13 | 282 | 65 | 132 |
| 228 | Energy Conversion | 4 | 281 | 1,062 | 982 |
| 229 | lasers | 17 | 275 | 892 | 982 |
| 230 | Geology | 14 | 272 | 1,404 | 1,505 |
| 231 | probabilities | 49 | 271 | 242 | 492 |
| 232 | ecosystem | 10 | 269 | 662 | 863 |
| 233 | Crystal growth | 13 | 268 | 434 | 556 |
| 234 | Nonlinear functional analysis | 37 | 266 | 150 | 476 |
| 235 | Immune system | 15 | 265 | 335 | 718 |
| 236 | Energy Policy | 9 | 259 | 1,610 | 1,956 |
| 237 | Energy Harvesting | 3 | 258 | 440 | 432 |
| 237 | Celestial Mechanics | 12 | 258 | 61 | 77 |
| 237 | Chemical analysis | 11 | 258 | 509 | 638 |
| 240 | Conservation Biology | 5 | 255 | 855 | 702 |
| 240 | Developmental Biology | 3 | 255 | 1,657 | 1,241 |
| 242 | Religion and Psychology | 16 | 254 | 81 | 110 |
| 243 | Radio | 2 | 251 | 1,531 | 853 |
| 244 | eye | 3 | 248 | 179 | 244 |
| 244 | Evolution | 13 | 248 | 835 | 1,128 |
| 244 | hygiene | 40 | 248 | 25 | 194 |
| 247 | Investment analysis | 6 | 245 | 631 | 420 |
| 248 | Paleoecology | 10 | 239 | 589 | 671 |
| 248 | Liquid Crystals | 33 | 239 | 182 | 233 |
| 250 | Differential Equations | 26 | 238 | 252 | 480 |
| 251 | Psychophysiology | 10 | 237 | 1,431 | 1,613 |
| 252 | Pharmaceutical Technology | 11 | 235 | 769 | 948 |
| 253 | Molecular evolution | 7 | 234 | 870 | 998 |
| 254 | Chemical structure | 20 | 233 | 54 | 99 |
| 255 | Wildlife conservation | 10 | 232 | 570 | 841 |
| 256 | Retina | 2 | 231 | 188 | 250 |
| 257 | vitamin C | 5 | 228 | 256 | 258 |
| 257 | vitamin E | 5 | 228 | 256 | 258 |
| 259 | Paleoclimatology | 9 | 227 | 636 | 747 |
| 259 | Regional Planning | 15 | 227 | 634 | 835 |
| 261 | Food additives | 4 | 224 | 919 | 810 |
| 262 | Plastics | 12 | 221 | 812 | 886 |
| 263 | Hypertension | 5 | 217 | 962 | 1,086 |
| 264 | Genetic Toxicology | 4 | 213 | 331 | 297 |
| 265 | Microbial Biotechnology | 2 | 211 | 1,298 | 570 |
| 265 | Quantum Gravity | 18 | 211 | 1,051 | 1,308 |
| 267 | Geophysics | 11 | 208 | 1,797 | 2,047 |
| 268 | cell physiology | 5 | 207 | 1,007 | 1,071 |
| 269 | Nanoparticles | 6 | 205 | 1,367 | 1,278 |
| 269 | Dementia | 1 | 205 | 1,678 | 597 |
| 269 | Alzheimer's disease | 1 | 205 | 1,696 | 635 |
| 272 | Thrombosis | 10 | 203 | 516 | 660 |
| 273 | environmental exposure | 15 | 201 | 731 | 1,358 |
| 274 | Green Technology | 6 | 198 | 174 | 150 |
| 274 | Measurement | 17 | 198 | 445 | 766 |
| 276 | cell interaction | 8 | 197 | 570 | 775 |
| 276 | amino acids | 5 | 197 | 393 | 358 |
| 278 | hydrocolloids | 2 | 196 | 759 | 633 |
| 279 | Animal Behavior | 16 | 195 | 768 | 1,328 |
| 279 | Organometallic chemistry | 22 | 195 | 701 | 1,166 |
| 281 | Social Sciences | 9 | 194 | 2,033 | 1,711 |
| 281 | Molecular Genetics | 11 | 194 | 892 | 1,332 |
| 281 | Control Theory | 10 | 194 | 1,020 | 977 |
| 284 | Oxidative stress | 7 | 188 | 476 | 868 |
| 284 | environmental indicators | 9 | 188 | 603 | 984 |
| 286 | Pharmacokinetics | 8 | 186 | 411 | 575 |
| 287 | Inflammation | 5 | 184 | 793 | 888 |
| 288 | Soil biology | 12 | 183 | 414 | 808 |
| 289 | Japan | 11 | 182 | 833 | 866 |
| 289 | Paleobotany | 6 | 182 | 86 | 95 |
| 289 | Vegetation dynamics | 6 | 182 | 83 | 94 |
| 292 | Technology | 13 | 181 | 1,790 | 2,257 |
| 293 | Research Design | 8 | 180 | 627 | 762 |
| 293 | Liposomes | 8 | 180 | 280 | 391 |
| 293 | Lipid bilayers | 8 | 180 | 249 | 350 |
| 296 | Sedimentary rocks | 11 | 177 | 244 | 434 |
| 297 | mutagens | 2 | 175 | 763 | 616 |
| 297 | body temperature | 17 | 175 | 58 | 261 |
| 297 | Cell communication | 5 | 175 | 396 | 520 |
| 300 | cytokines | 5 | 174 | 850 | 902 |
| 301 | plant communities | 8 | 171 | 641 | 921 |
| 302 | Psychiatry | 15 | 170 | 1,697 | 2,428 |
| 303 | Land Use Planning | 7 | 168 | 191 | 319 |
| 304 | Philosophy | 48 | 167 | 332 | 575 |
| 305 | Signal Processing | 9 | 166 | 1,505 | 1,753 |
| 305 | Semiconductors | 9 | 166 | 1,287 | 1,191 |
| 307 | cell adhesion molecules | 4 | 164 | 120 | 231 |
| 308 | Cardiovascular system | 6 | 163 | 852 | 1,220 |
| 309 | Environmental Engineering | 8 | 162 | 2,350 | 2,734 |
| 310 | Cardiovascular Pharmacology | 5 | 161 | 144 | 144 |
| 311 | Food Microbiology | 7 | 159 | 734 | 1,124 |
| 311 | DNA repair | 3 | 159 | 253 | 198 |
| 313 | economic policy | 6 | 158 | 1,666 | 1,243 |
| 314 | Clinical Laboratory Science | 4 | 157 | 147 | 77 |
| 314 | enzymes | 9 | 157 | 816 | 1,109 |
| 316 | Solid State Chemistry | 16 | 156 | 1,232 | 1,665 |
| 317 | Cognition | 9 | 155 | 978 | 1,181 |
| 318 | Linguistics | 12 | 154 | 656 | 729 |
| 318 | Communication | 9 | 154 | 1,166 | 1,420 |
| 320 | Adsorption | 12 | 152 | 34 | 110 |
| 320 | drug therapy | 5 | 152 | 1,271 | 1,244 |
| 322 | Organometallic compounds | 9 | 151 | 792 | 922 |
| 323 | Economic History | 11 | 148 | 1,731 | 1,845 |
| 323 | Phylogeny | 7 | 148 | 541 | 825 |
| 325 | Economic Development | 2 | 145 | 1,800 | 1,262 |
| 325 | Clinical Pharmacology | 13 | 145 | 558 | 870 |
| 325 | brain mapping | 3 | 145 | 568 | 572 |
| 328 | Palliative Care | 6 | 143 | 503 | 453 |
| 329 | Geobiology | 1 | 142 | 688 | 345 |
| 329 | Mechanics | 5 | 142 | 1,045 | 762 |
| 331 | Enzyme inhibitors | 4 | 140 | 311 | 269 |
| 331 | weather | 5 | 140 | 393 | 435 |
| 333 | Critical Care | 1 | 138 | 1,542 | 1,170 |
| 333 | Critical Care Medicine | 1 | 138 | 1,455 | 1,145 |
| 335 | Engineering | 12 | 137 | 2,274 | 2,748 |
| 335 | Sustainable Development | 10 | 137 | 1,012 | 1,754 |
| 335 | Environmental Toxicology | 7 | 137 | 1,586 | 2,146 |
| 335 | Public Policy | 5 | 137 | 1,280 | 1,335 |
| 335 | Clinical Biochemistry | 8 | 137 | 624 | 778 |
| 335 | Environmental pollutants | 7 | 137 | 1,497 | 1,954 |
| 341 | bats | 3 | 136 | 101 | 39 |
| 342 | Mental Disorders | 10 | 135 | 1,384 | 1,967 |
| 343 | Sedimentology | 3 | 134 | 606 | 493 |
| 343 | Stem cells | 4 | 134 | 1,017 | 1,054 |
| 343 | Climate | 4 | 134 | 478 | 475 |
| 343 | energy resources | 4 | 134 | 1,155 | 1,515 |
| 347 | pollutants | 6 | 133 | 1,331 | 1,758 |
| 348 | Alternative Medicine | 2 | 132 | 1,807 | 1,209 |
| 348 | histological techniques | 1 | 132 | 886 | 630 |
| 348 | Liquid chromatography | 21 | 132 | 59 | 172 |
| 351 | Forecasting | 5 | 131 | 401 | 385 |
| 351 | city planning | 12 | 131 | 738 | 1,171 |
| 351 | Diabetes | 6 | 131 | 1,218 | 1,513 |
| 354 | analysis | 4 | 130 | 320 | 333 |
| 355 | Analytical Biochemistry | 11 | 129 | 838 | 1,240 |
| 355 | intergroup relations | 3 | 129 | 182 | 175 |
| 355 | Pesticides | 7 | 129 | 340 | 410 |
| 358 | Sociology | 81 | 128 | 405 | 2,056 |
| 358 | Mutagenesis | 1 | 128 | 825 | 234 |
| 360 | Diabetes mellitus | 5 | 127 | 1,268 | 1,490 |
| 360 | Cheminformatics | 2 | 127 | 417 | 362 |
| 362 | Mesoporous materials | 2 | 126 | 120 | 97 |
| 363 | coal | 3 | 125 | 1,558 | 1,560 |
| 364 | Paleontology | 10 | 123 | 717 | 890 |
| 364 | Informatics | 7 | 123 | 516 | 698 |
| 364 | proteins | 3 | 123 | 1,761 | 1,446 |
| 367 | Quantum electronics | 7 | 122 | 1,068 | 1,072 |
| 367 | soil management | 1 | 122 | 900 | 582 |
| 367 | Optoelectronic devices | 7 | 122 | 587 | 466 |
| 367 | Invertebrates | 7 | 122 | 343 | 436 |
| 367 | tillage | 1 | 122 | 718 | 496 |
| 372 | Systems Analysis | 3 | 121 | 1,184 | 809 |
| 373 | Chemotherapy | 3 | 118 | 992 | 892 |
| 373 | Land use | 9 | 118 | 585 | 1,067 |
| 373 | Raman spectroscopy | 7 | 118 | 463 | 635 |
| 376 | Diet | 5 | 116 | 1,388 | 1,903 |
| 376 | Aquatic ecology | 7 | 116 | 601 | 715 |
| 378 | animals | 13 | 115 | 516 | 797 |
| 378 | Brain | 9 | 115 | 1,374 | 1,967 |
| 378 | Plant cells | 6 | 115 | 716 | 1,271 |
| 381 | food technology | 6 | 114 | 1,812 | 2,264 |
| 381 | finance | 8 | 114 | 1,527 | 1,736 |
| 383 | Environmental Chemistry | 8 | 113 | 1,233 | 2,022 |
| 383 | International Finance | 5 | 113 | 1,333 | 1,410 |
| 383 | Hormones | 3 | 113 | 1,060 | 1,050 |
| 383 | Steroids | 3 | 113 | 843 | 751 |
| 387 | eugenics | 3 | 112 | 536 | 418 |
| 387 | Agriculture | 3 | 112 | 2,064 | 1,686 |
| 389 | Health Education | 3 | 111 | 1,717 | 1,335 |
| 389 | Medicinal plants | 6 | 111 | 914 | 1,385 |
| 389 | telemarketing | 1 | 111 | 233 | 106 |
| 392 | economic forecasting | 3 | 110 | 304 | 305 |
| 392 | mass transfer | 1 | 110 | 2,251 | 1,520 |
| 392 | Behavior | 4 | 110 | 2,403 | 2,755 |
| 395 | Industrial Engineering | 11 | 109 | 909 | 1,554 |
| 395 | Phytochemistry | 2 | 109 | 402 | 225 |
| 395 | Analytical Toxicology | 1 | 109 | 370 | 164 |
| 395 | Phytoremediation | 2 | 109 | 402 | 225 |
| 395 | environmental remediation | 2 | 109 | 485 | 260 |
| 395 | Bioreactors | 2 | 109 | 402 | 225 |
| 401 | Drug design | 10 | 108 | 745 | 1,313 |
| 401 | Ethology | 9 | 108 | 818 | 1,419 |
| 401 | Tropical Medicine | 9 | 108 | 961 | 1,277 |
| 404 | Hemostasis | 9 | 107 | 360 | 543 |
| 404 | Health | 4 | 107 | 1,707 | 1,595 |
| 404 | Fixed Point Theory | 10 | 107 | 72 | 79 |
| 404 | gene mapping | 3 | 107 | 1,670 | 1,740 |
| 408 | Sports | 5 | 106 | 1,596 | 1,439 |
| 409 | Urban Policy | 8 | 104 | 433 | 832 |
| 409 | polar regions | 6 | 104 | 401 | 498 |
| 411 | Nonlinear Dynamics | 8 | 103 | 1,250 | 1,505 |
| 411 | Forest Management | 5 | 103 | 736 | 915 |
| 411 | pain | 7 | 103 | 768 | 1,140 |
| 411 | Menopause | 2 | 103 | 369 | 264 |
| 415 | Anatomy | 13 | 102 | 905 | 1,479 |
| 416 | Rural Development | 3 | 101 | 511 | 494 |
| 416 | Sleep Disorders | 3 | 101 | 1,269 | 1,110 |
| 416 | Sleep | 3 | 101 | 1,298 | 1,115 |
| 419 | Political Science | 136 | 100 | 136 | 1,062 |
| 419 | Nursing | 9 | 100 | 1,103 | 1,333 |
| 419 | Child | 9 | 100 | 1,199 | 1,721 |
| 422 | Drug delivery systems | 6 | 99 | 1,066 | 1,521 |
| 423 | Medical Technology | 4 | 98 | 1,262 | 1,353 |
| 423 | Parasitic Diseases | 5 | 98 | 1,393 | 1,596 |
| 423 | biological invasions | 3 | 98 | 611 | 618 |
| 426 | Information Theory | 12 | 97 | 675 | 1,128 |
| 427 | vascular diseases | 1 | 96 | 932 | 758 |
| 428 | Human Geography | 3 | 95 | 1,057 | 842 |
| 428 | Plant Taxonomy | 2 | 95 | 490 | 341 |
| 428 | isomerism | 7 | 95 | 151 | 232 |
| 428 | Bacterial infections | 1 | 95 | 1,184 | 874 |
| 428 | Chirality | 7 | 95 | 151 | 232 |
| 433 | Political Psychology | 1 | 94 | 574 | 412 |
| 433 | Therapeutics | 7 | 94 | 945 | 1,409 |
| 435 | Medical Oncology | 4 | 93 | 1,163 | 1,329 |
| 435 | Sports Medicine | 11 | 93 | 1,277 | 1,755 |
| 435 | Physical organic chemistry | 5 | 93 | 1,142 | 1,194 |
| 435 | Mental illness | 2 | 93 | 1,808 | 1,680 |
| 439 | Pediatrics | 2 | 92 | 2,180 | 1,842 |
| 440 | Paleopathology | 8 | 91 | 133 | 193 |
| 440 | viruses | 1 | 91 | 1,632 | 1,333 |
| 440 | optical devices | 4 | 91 | 384 | 387 |
| 443 | Eastern Europe | 17 | 90 | 190 | 455 |
| 444 | Information Systems | 4 | 89 | 1,195 | 1,296 |
| 444 | Econometrics | 7 | 89 | 926 | 1,009 |
| 446 | Agricultural Ecology | 2 | 88 | 1,209 | 1,226 |
| 446 | Greenhouse gases | 1 | 88 | 472 | 377 |
| 448 | Genetic testing | 1 | 86 | 601 | 193 |
| 449 | Water pollution | 3 | 85 | 2,439 | 2,598 |
| 449 | nucleic acids | 3 | 85 | 1,368 | 1,536 |
| 449 | Planets | 2 | 85 | 1,494 | 1,508 |
| 449 | Fluorescence | 5 | 85 | 292 | 337 |
| 453 | Petroleum Engineering | 1 | 84 | 1,060 | 648 |
| 453 | Neuropsychology | 8 | 84 | 1,294 | 1,917 |
| 455 | Animal husbandry | 3 | 83 | 314 | 283 |
| 455 | livestock | 3 | 83 | 493 | 388 |
| 457 | Landscape Ecology | 4 | 82 | 393 | 574 |
| 458 | Urology | 6 | 80 | 896 | 1,156 |
| 458 | Adhesion | 3 | 80 | 728 | 605 |
| 458 | Fertilizers | 3 | 80 | 330 | 390 |
| 458 | adhesives | 3 | 80 | 774 | 612 |
| 462 | Medical Physics | 4 | 79 | 1,229 | 1,390 |
| 463 | Systems Biology | 3 | 78 | 1,336 | 1,441 |
| 463 | preventive medicine | 2 | 78 | 1,252 | 1,166 |
| 463 | Cell division | 2 | 78 | 449 | 470 |
| 466 | infrared radiation | 9 | 77 | 259 | 447 |
| 466 | Cell differentiation | 2 | 77 | 1,398 | 1,541 |
| 466 | Genetic markers | 2 | 77 | 342 | 234 |
| 469 | Enteral nutrition | 4 | 76 | 631 | 919 |
| 469 | Parenteral nutrition | 4 | 76 | 726 | 1,013 |
| 469 | biological factors | 9 | 76 | 1,061 | 1,840 |
| 472 | Data Mining | 3 | 75 | 1,078 | 1,049 |
| 472 | Occupational Health | 12 | 75 | 399 | 867 |
| 472 | Access to Information | 3 | 75 | 154 | 283 |
| 472 | Solitons | 4 | 75 | 1,073 | 1,191 |
| 472 | big data | 3 | 75 | 635 | 630 |
| 472 | Fractals | 4 | 75 | 1,080 | 1,194 |
| 472 | Chaos | 4 | 75 | 1,073 | 1,191 |
| 472 | Screening | 5 | 75 | 97 | 170 |
| 472 | Information dissemination | 3 | 75 | 154 | 283 |
| 481 | Nanochemistry | 2 | 74 | 1,537 | 1,314 |
| 481 | Freshwater Ecology | 14 | 74 | 41 | 177 |
| 481 | Asthma | 5 | 74 | 449 | 548 |
| 481 | Quality Control | 6 | 74 | 1,198 | 1,828 |
| 481 | Biofeedback | 2 | 74 | 141 | 170 |
| 481 | Cognitive Therapy | 1 | 74 | 993 | 615 |
| 481 | behavior therapy | 2 | 74 | 902 | 808 |
| 488 | Oceanography | 3 | 73 | 1,530 | 1,570 |
| 488 | Transnational corporations | 2 | 73 | 516 | 455 |
| 488 | Chromosome mapping | 2 | 73 | 1,832 | 1,820 |
| 491 | Cognitive neuroscience | 5 | 72 | 725 | 1,079 |
| 491 | Calculus of Variations | 10 | 72 | 260 | 430 |
| 491 | rare diseases | 3 | 72 | 545 | 590 |
| 491 | Microstructure | 2 | 72 | 1,178 | 705 |
| 491 | Exercise | 4 | 72 | 1,271 | 1,307 |
| 496 | Freeze-Drying | 6 | 71 | 195 | 371 |
| 496 | Hypothermia | 6 | 71 | 195 | 371 |
| 496 | Freeze Drying | 6 | 71 | 195 | 371 |
| 496 | carcinogens | 3 | 71 | 863 | 1,022 |
| 496 | Gastrointestinal diseases | 3 | 71 | 618 | 571 |
| 501 | industrial hygiene | 10 | 70 | 418 | 718 |
| 501 | Entropy | 12 | 70 | 444 | 1,018 |
| 501 | animal diseases | 6 | 70 | 303 | 517 |
| 501 | language | 2 | 70 | 982 | 859 |
| 505 | Geometry | 11 | 69 | 623 | 747 |
| 505 | Proteome | 1 | 69 | 1,441 | 1,237 |
| 505 | land degradation | 4 | 69 | 411 | 671 |
| 505 | Allergy | 4 | 69 | 792 | 1,132 |
| 505 | degradation | 4 | 69 | 411 | 671 |
| 510 | Neurosurgery | 4 | 68 | 738 | 915 |
| 510 | occupational diseases | 9 | 68 | 365 | 922 |
| 512 | Horticulture | 1 | 67 | 1,243 | 729 |
| 513 | Historical Linguistics | 1 | 66 | 175 | 55 |
| 513 | Stochastic Processes | 8 | 66 | 515 | 823 |
| 513 | fuel cells | 2 | 66 | 1,406 | 1,453 |
| 513 | Ethnology | 4 | 66 | 1,276 | 1,157 |
| 517 | Religious Education | 10 | 65 | 30 | 54 |
| 517 | Discourse Analysis | 4 | 65 | 308 | 415 |
| 517 | Microorganisms | 4 | 65 | 861 | 1,313 |
| 520 | Logic | 30 | 64 | 51 | 318 |
| 520 | Clinical Immunology | 2 | 64 | 1,022 | 1,050 |
| 520 | Social policy | 12 | 64 | 432 | 955 |
| 523 | food contamination | 8 | 63 | 519 | 1,055 |
| 524 | Education | 17 | 62 | 1,550 | 2,908 |
| 524 | Solar Energy | 2 | 62 | 2,006 | 2,143 |
| 526 | cryosphere | 6 | 61 | 243 | 466 |
| 527 | Anthropology | 15 | 60 | 634 | 1,327 |
| 527 | Synaptic Transmission | 1 | 60 | 690 | 566 |
| 529 | Constitutional Law | 60 | 59 | 8 | 36 |
| 529 | alcoholism | 6 | 59 | 901 | 1,423 |
| 531 | Cosmology | 2 | 58 | 750 | 659 |
| 531 | nuclear astrophysics | 2 | 58 | 583 | 557 |
| 531 | Radiobiology | 3 | 58 | 1,034 | 1,187 |
| 531 | landscapes | 5 | 58 | 100 | 207 |
| 531 | Genes | 2 | 58 | 1,244 | 1,222 |
| 536 | Ultrasonics | 1 | 57 | 1,788 | 1,622 |
| 536 | Ferroelectricity | 1 | 57 | 1,482 | 810 |
| 536 | Sound | 1 | 57 | 1,574 | 931 |
| 536 | Ultrasound | 1 | 57 | 1,076 | 838 |
| 536 | Radio frequency | 1 | 57 | 697 | 523 |
| 541 | Dermatology | 6 | 56 | 1,038 | 1,410 |
| 541 | Inorganic Chemistry | 1 | 56 | 125 | 91 |
| 541 | Algorithms | 10 | 56 | 318 | 691 |
| 541 | educational planning | 2 | 56 | 545 | 556 |
| 541 | Maps | 5 | 56 | 95 | 170 |
| 546 | Environmental Economics | 1 | 55 | 775 | 477 |
| 546 | Developmental Neurobiology | 1 | 55 | 908 | 618 |
| 548 | Democracy | 71 | 54 | 3 | 233 |
| 548 | foreign policy | 71 | 54 | 18 | 145 |
| 548 | dietary supplements | 3 | 54 | 886 | 1,200 |
| 548 | Developmental Immunology | 1 | 54 | 947 | 832 |
| 548 | political power | 71 | 54 | 1 | 1 |
| 548 | peptides | 2 | 54 | 994 | 857 |
| 548 | Legislation | 2 | 54 | 15 | 8 |
| 548 | Combinatorial analysis | 3 | 54 | 1,044 | 769 |
| 556 | Obstetrics | 4 | 53 | 1,602 | 1,959 |
| 556 | Paleogeography | 3 | 53 | 917 | 1,125 |
| 556 | Cognitive Grammar | 3 | 53 | 54 | 86 |
| 556 | Nutrigenomics | 2 | 53 | 114 | 184 |
| 560 | Computational Biology | 10 | 52 | 1,283 | 2,558 |
| 560 | Mass Spectrometry | 3 | 52 | 1,065 | 1,160 |
| 560 | Quality of life | 3 | 52 | 1,380 | 1,811 |
| 563 | Nutrition physiology | 2 | 51 | 878 | 981 |
| 563 | Adolescent | 2 | 51 | 2,251 | 2,066 |
| 563 | Evolution equations | 8 | 51 | 41 | 120 |
| 566 | Molecular Pharmacology | 1 | 50 | 1,164 | 1,141 |
| 566 | Randomized Controlled Trials | 6 | 50 | 640 | 910 |
| 566 | Business | 2 | 50 | 2,454 | 2,531 |
| 566 | Semiotics | 3 | 50 | 379 | 201 |
| 566 | psychotherapy | 2 | 50 | 1,402 | 1,303 |
| 566 | Cognitive Learning | 2 | 50 | 161 | 144 |
| 566 | drug evaluation | 5 | 50 | 950 | 1,518 |
| 573 | Green Chemistry | 4 | 49 | 1,484 | 2,252 |
| 573 | Multicultural Education | 6 | 49 | 242 | 417 |
| 573 | Quantum Optics | 8 | 49 | 534 | 914 |
| 573 | Geriatric Oncology | 1 | 49 | 815 | 727 |
| 573 | natural products | 5 | 49 | 1,428 | 1,881 |
| 573 | ethanol | 4 | 49 | 415 | 601 |
| 573 | Atomic spectroscopy | 8 | 49 | 691 | 1,171 |
| 573 | Prospecting | 4 | 49 | 46 | 73 |
| 573 | Laser Spectroscopy | 8 | 49 | 486 | 873 |
| 573 | Fisheries | 5 | 49 | 1,170 | 1,609 |
| 583 | Total Quality Management | 3 | 48 | 563 | 817 |
| 583 | food handling | 3 | 48 | 915 | 1,451 |
| 583 | Information Science | 6 | 48 | 1,849 | 2,875 |
| 586 | Regional Economics | 7 | 47 | 253 | 555 |
| 586 | Carcinogenesis | 1 | 47 | 1,282 | 1,187 |
| 586 | Edible plants | 2 | 47 | 286 | 434 |
| 586 | pharmaceutical industry | 2 | 47 | 701 | 695 |
| 590 | Automation | 3 | 46 | 2,085 | 2,412 |
| 590 | Ethnic relations | 3 | 46 | 603 | 564 |
| 590 | Pest control | 2 | 46 | 175 | 143 |
| 593 | Cytogenetics | 7 | 45 | 784 | 1,564 |
| 593 | Crystallography | 10 | 45 | 956 | 1,207 |
| 593 | management | 6 | 45 | 2,442 | 3,583 |
| 593 | Lipids | 2 | 45 | 1,402 | 1,625 |
| 593 | Library Science | 5 | 45 | 683 | 831 |
| 593 | cultural pluralism | 2 | 45 | 547 | 519 |
| 599 | Molecular ecology | 2 | 44 | 1,129 | 1,602 |
| 599 | ethnobiology | 1 | 44 | 458 | 466 |
| 599 | Industry | 2 | 44 | 255 | 594 |
| 599 | biological monitoring | 2 | 44 | 637 | 791 |
| 603 | World History | 63 | 43 | 2 | 65 |
| 603 | Planetary Science | 6 | 43 | 327 | 542 |
| 603 | Power Electronics | 2 | 43 | 1,144 | 1,281 |
| 603 | pain management | 5 | 43 | 412 | 701 |
| 603 | civilization | 67 | 43 | 73 | 519 |
| 603 | Allergies | 3 | 43 | 112 | 179 |
| 609 | Pediatric Endocrinology | 1 | 42 | 548 | 287 |
| 609 | Population Genetics | 3 | 42 | 1,108 | 1,612 |
| 609 | Water quality | 3 | 42 | 190 | 365 |
| 609 | global environmental change | 3 | 42 | 789 | 1,301 |
| 609 | Infrared spectroscopy | 2 | 42 | 430 | 508 |
| 609 | Metabolic disorders in children | 1 | 42 | 519 | 258 |
| 609 | cardiac catheterization | 4 | 42 | 472 | 562 |
| 609 | Water chemistry | 3 | 42 | 323 | 505 |
| 609 | environmental issues | 3 | 42 | 408 | 738 |
| 618 | Clinical Psychology | 6 | 41 | 806 | 1,440 |
| 618 | energy conservation | 3 | 41 | 2,049 | 2,787 |
| 618 | Computational Intelligence | 2 | 41 | 887 | 854 |
| 618 | Ocean Engineering | 1 | 41 | 2,126 | 1,984 |
| 618 | Microscopy | 2 | 41 | 1,627 | 1,480 |
| 618 | Australia | 8 | 41 | 1,051 | 1,980 |
| 624 | Knowledge | 5 | 40 | 388 | 486 |
| 624 | DNS | 1 | 40 | 819 | 721 |
| 624 | Antarctica | 3 | 40 | 536 | 605 |
| 624 | Recombinant DNA | 1 | 40 | 2,001 | 1,755 |
| 624 | DNA | 1 | 40 | 993 | 795 |
| 629 | Ecohydrology | 4 | 39 | 289 | 515 |
| 629 | Plant tissue culture | 4 | 39 | 602 | 1,060 |
| 629 | Foodborne diseases | 2 | 39 | 309 | 434 |
| 629 | Agricultural systems | 1 | 39 | 542 | 619 |
| 629 | Plant cell culture | 4 | 39 | 533 | 1,045 |
| 629 | Emotions | 1 | 39 | 912 | 898 |
| 635 | Kinetics | 4 | 38 | 408 | 668 |
| 635 | Agricultural Microbiology | 6 | 38 | 41 | 61 |
| 635 | Operations Research | 6 | 38 | 1,598 | 2,352 |
| 635 | Nanophotonics | 2 | 38 | 427 | 565 |
| 635 | drug resistance | 2 | 38 | 894 | 1,118 |
| 635 | textile fibers | 5 | 38 | 301 | 536 |
| 641 | Information Technology | 4 | 37 | 2,162 | 2,857 |
| 641 | Underwater Archaeology | 2 | 37 | 135 | 78 |
| 641 | Metallurgy | 2 | 37 | 2,321 | 2,213 |
| 641 | Porous materials | 2 | 37 | 991 | 957 |
| 641 | Parasites | 7 | 37 | 1,028 | 1,862 |
| 646 | Ergonomics | 3 | 36 | 885 | 1,139 |
| 646 | Laser-plasma interactions | 6 | 36 | 53 | 86 |
| 646 | Bioinformatics | 6 | 36 | 1,356 | 2,324 |
| 646 | Wetland ecology | 2 | 36 | 595 | 677 |
| 646 | Obesity | 5 | 36 | 1,299 | 2,293 |
| 646 | Plasma density | 6 | 36 | 53 | 86 |
| 646 | Memory | 2 | 36 | 1,611 | 1,885 |
| 653 | Quantum Chemistry | 10 | 35 | 27 | 266 |
| 653 | Psychopharmacology | 4 | 35 | 1,091 | 1,698 |
| 653 | Animal ecology | 5 | 35 | 884 | 1,420 |
| 653 | Gene expression regulation | 2 | 35 | 1,057 | 1,239 |
| 657 | Biogeochemistry | 4 | 34 | 878 | 1,596 |
| 657 | Bibliometrics | 2 | 34 | 180 | 299 |
| 657 | Developmental Disabilities | 2 | 34 | 1,098 | 1,413 |
| 657 | DNA polymerases | 1 | 34 | 586 | 831 |
| 661 | Composite Materials | 2 | 33 | 2,682 | 3,085 |
| 661 | Water Microbiology | 3 | 33 | 447 | 835 |
| 661 | Group decision making | 1 | 33 | 824 | 703 |
| 664 | Kinesiology | 3 | 32 | 134 | 299 |
| 664 | Orthopedics | 3 | 32 | 1,210 | 1,533 |
| 664 | Database Management | 1 | 32 | 1,134 | 1,002 |
| 664 | Plant Pathology | 4 | 32 | 118 | 217 |
| 664 | Educational Technology | 3 | 32 | 1,665 | 2,292 |
| 664 | Infection control | 1 | 32 | 626 | 658 |
| 664 | Expert Systems | 1 | 32 | 539 | 343 |
| 664 | Simulation Methods | 2 | 32 | 1,313 | 1,458 |
| 664 | Soil fertility | 3 | 32 | 309 | 683 |
| 664 | marketing | 1 | 32 | 2,608 | 2,430 |
| 664 | medical education | 3 | 32 | 1,576 | 2,032 |
| 664 | Transplantation | 1 | 32 | 1,135 | 1,146 |
| 664 | Navier-Stokes equations | 3 | 32 | 151 | 184 |
| 664 | packaging | 1 | 32 | 261 | 235 |
| 678 | Plant Genetics | 2 | 31 | 774 | 1,126 |
| 678 | Ecophysiology | 4 | 31 | 152 | 453 |
| 678 | Mental Health | 3 | 31 | 1,510 | 1,968 |
| 678 | Ethnoarchaeology | 1 | 31 | 343 | 336 |
| 678 | Emergency Medicine | 2 | 31 | 1,321 | 1,370 |
| 678 | Plant genetic engineering | 2 | 31 | 996 | 1,342 |
| 678 | Learning disabilities | 2 | 31 | 985 | 1,111 |
| 678 | Intellectual disability | 2 | 31 | 910 | 1,043 |
| 678 | Human biology | 5 | 31 | 465 | 855 |
| 678 | Fouling | 2 | 31 | 297 | 517 |
| 688 | Numerical Analysis | 2 | 30 | 2,643 | 2,502 |
| 688 | Gerontology | 3 | 30 | 1,727 | 2,061 |
| 688 | Primates | 3 | 30 | 698 | 941 |
| 691 | Computer Graphics | 3 | 29 | 1,648 | 2,085 |
| 691 | Heterocyclic chemistry | 5 | 29 | 366 | 645 |
| 691 | Quantum Communication | 1 | 29 | 327 | 375 |
| 691 | Moon | 5 | 29 | 98 | 189 |
| 691 | Mineral resources | 2 | 29 | 845 | 1,263 |
| 691 | Scandinavia | 2 | 29 | 729 | 857 |
| 691 | Kidney diseases | 4 | 29 | 700 | 1,129 |
| 698 | Surgery | 3 | 28 | 1,268 | 1,730 |
| 698 | Chemical Ecology | 1 | 28 | 816 | 925 |
| 698 | Psycholinguistics | 4 | 28 | 799 | 1,286 |
| 698 | Neonatology | 2 | 28 | 697 | 886 |
| 698 | Chemical kinetics | 9 | 28 | 348 | 914 |
| 698 | Mycology | 2 | 28 | 1,672 | 1,970 |
| 698 | United States | 7 | 28 | 3,148 | 5,047 |
| 698 | Detectors | 2 | 28 | 1,762 | 2,079 |
| 698 | Solar System | 3 | 28 | 710 | 969 |
| 707 | Ecological Genetics | 4 | 27 | 560 | 939 |
| 707 | Probability | 3 | 27 | 576 | 906 |
| 707 | Transportation | 3 | 27 | 1,570 | 2,125 |
| 707 | Spectroscopy | 1 | 27 | 382 | 119 |
| 707 | men | 2 | 27 | 393 | 555 |
| 707 | Solutions | 1 | 27 | 712 | 555 |
| 707 | Vision | 2 | 27 | 725 | 953 |
| 707 | carbon monoxide | 1 | 27 | 674 | 857 |
| 715 | Gene expression | 1 | 26 | 465 | 485 |
| 715 | Child Development | 3 | 26 | 1,618 | 2,331 |
| 715 | Drying | 2 | 26 | 484 | 684 |
| 715 | Genetic regulation | 1 | 26 | 1,445 | 1,515 |
| 715 | Hospitality industry | 1 | 26 | 811 | 878 |
| 720 | Economic Geography | 2 | 25 | 479 | 613 |
| 720 | Maritime Law | 2 | 25 | 106 | 98 |
| 720 | Marine Conservation | 2 | 25 | 84 | 78 |
| 720 | Hemodynamics | 1 | 25 | 829 | 1,014 |
| 720 | Law of the Sea | 2 | 25 | 85 | 78 |
| 720 | Family | 5 | 25 | 727 | 1,396 |
| 720 | East Asia | 2 | 25 | 830 | 898 |
| 720 | families | 5 | 25 | 674 | 1,162 |
| 720 | Vaccines | 3 | 25 | 1,502 | 2,266 |
| 729 | Epigenetics | 5 | 24 | 140 | 446 |
| 729 | Microcirculation | 3 | 24 | 441 | 784 |
| 729 | Laser therapy | 2 | 24 | 550 | 643 |
| 729 | Epigenomics | 5 | 24 | 138 | 439 |
| 729 | Extreme Value Theory | 3 | 24 | 75 | 155 |
| 729 | clay | 1 | 24 | 1,303 | 1,561 |
| 729 | Blood vessels | 3 | 24 | 364 | 688 |
| 729 | catalytic activity | 2 | 24 | 795 | 1,110 |
| 729 | Trace elements | 1 | 24 | 535 | 690 |
| 738 | Systems Engineering | 5 | 23 | 1,743 | 2,808 |
| 738 | Travel | 1 | 23 | 1,327 | 1,252 |
| 738 | Globalization | 6 | 23 | 342 | 1,021 |
| 738 | Eating Disorders | 2 | 23 | 938 | 1,245 |
| 738 | Feeding and Eating Disorders | 2 | 23 | 907 | 1,203 |
| 738 | Entrepreneurship | 1 | 23 | 1,619 | 1,824 |
| 738 | Neurons | 1 | 23 | 759 | 1,093 |
| 738 | ecotourism | 1 | 23 | 474 | 609 |
| 738 | Consciousness | 1 | 23 | 818 | 754 |
| 747 | symbiosis | 1 | 22 | 329 | 362 |
| 747 | Disability Law | 1 | 22 | 312 | 327 |
| 747 | Child psychology | 2 | 22 | 1,526 | 2,020 |
| 747 | Visual Perception | 1 | 22 | 1,840 | 1,840 |
| 747 | human development | 3 | 22 | 777 | 1,370 |
| 747 | drug abuse | 3 | 22 | 612 | 987 |
| 747 | Attention | 1 | 22 | 1,925 | 1,981 |
| 747 | Perception | 1 | 22 | 2,042 | 2,036 |
| 747 | Textile industry | 4 | 22 | 410 | 654 |
| 756 | Engineering Mathematics | 8 | 21 | 1,139 | 2,285 |
| 756 | Wetland conservation | 1 | 21 | 642 | 682 |
| 756 | genome | 2 | 21 | 1,554 | 2,196 |
| 756 | wildlife diseases | 3 | 21 | 151 | 286 |
| 756 | Wetlands | 1 | 21 | 654 | 685 |
| 761 | Higher Education | 2 | 20 | 787 | 1,035 |
| 761 | Music | 2 | 20 | 1,081 | 1,117 |
| 761 | Geochemistry | 1 | 20 | 2,438 | 2,619 |
| 761 | Ichthyology | 1 | 20 | 836 | 695 |
| 761 | voice | 2 | 20 | 588 | 754 |
| 761 | Cosmochemistry | 1 | 20 | 1,254 | 1,457 |
| 761 | rivers | 1 | 20 | 544 | 601 |
| 761 | Fish | 1 | 20 | 667 | 601 |
| 769 | Emergency Medical Services | 1 | 19 | 1,059 | 1,090 |
| 769 | Evolutionary Genetics | 3 | 19 | 670 | 1,328 |
| 769 | Molecular Epidemiology | 3 | 19 | 670 | 1,328 |
| 769 | Atmospheric Physics | 2 | 19 | 1,620 | 2,149 |
| 769 | Cellular senescence | 2 | 19 | 398 | 989 |
| 769 | Antiviral agents | 1 | 19 | 426 | 531 |
| 769 | Substance Abuse | 2 | 19 | 1,484 | 1,923 |
| 769 | Organ transplantation | 2 | 19 | 376 | 467 |
| 769 | health services | 2 | 19 | 1,233 | 1,680 |
| 769 | India | 1 | 19 | 2,533 | 1,882 |
| 779 | Plant Morphology | 2 | 18 | 767 | 1,088 |
| 779 | Fishery management | 1 | 18 | 1,284 | 1,340 |
| 779 | Electrochemical Analysis | 3 | 18 | 1,566 | 2,305 |
| 779 | Great Lakes | 1 | 18 | 370 | 459 |
| 779 | atmosphere | 1 | 18 | 1,206 | 1,400 |
| 779 | commerce | 1 | 18 | 2,404 | 2,391 |
| 779 | RNA | 1 | 18 | 774 | 967 |
| 779 | Extreme environments | 1 | 18 | 441 | 632 |
| 787 | Robotics | 2 | 17 | 1,898 | 2,342 |
| 787 | Immunochemistry | 4 | 17 | 806 | 1,478 |
| 787 | Water quality management | 2 | 17 | 2,132 | 2,731 |
| 787 | Neuroplasticity | 2 | 17 | 328 | 669 |
| 787 | ovary | 1 | 17 | 388 | 539 |
| 787 | Mountains | 1 | 17 | 804 | 756 |
| 793 | Rheumatology | 1 | 16 | 1,352 | 1,465 |
| 793 | Public Administration | 3 | 16 | 1,352 | 1,875 |
| 793 | Pediatric Rheumatology | 1 | 16 | 397 | 414 |
| 793 | Multivariate Analysis | 1 | 16 | 881 | 916 |
| 793 | Histocompatibility Testing | 2 | 16 | 555 | 828 |
| 793 | recreation | 1 | 16 | 1,067 | 1,065 |
| 793 | Leisure | 1 | 16 | 586 | 775 |
| 793 | Aquaculture | 3 | 16 | 1,389 | 2,112 |
| 801 | Cognitive Psychology | 2 | 15 | 570 | 724 |
| 801 | Philosophy of Mind | 2 | 15 | 362 | 497 |
| 801 | health services accessibility | 2 | 15 | 1,099 | 1,636 |
| 801 | Computer-Aided Design | 2 | 15 | 1,457 | 1,946 |
| 801 | Socioeconomic Factors | 2 | 15 | 958 | 1,665 |
| 801 | Child welfare | 1 | 15 | 1,746 | 1,818 |
| 801 | Radioisotopes | 2 | 15 | 1,242 | 1,542 |
| 801 | Europa | 4 | 15 | 432 | 936 |
| 801 | Women's health | 1 | 15 | 1,948 | 2,101 |
| 801 | wetland management | 1 | 15 | 376 | 490 |
| 811 | Tribology | 1 | 14 | 1,597 | 1,751 |
| 811 | Artificial Organs | 2 | 14 | 659 | 920 |
| 811 | Memory disorders | 1 | 14 | 495 | 574 |
| 811 | Identity | 1 | 14 | 294 | 426 |
| 811 | Mental Health Services | 2 | 14 | 1,309 | 1,924 |
| 811 | Qualitative Research | 1 | 14 | 888 | 1,010 |
| 811 | Archives | 2 | 14 | 106 | 113 |
| 811 | Self | 1 | 14 | 392 | 532 |
| 811 | Mollusks | 1 | 14 | 470 | 426 |
| 811 | Pregnancy | 1 | 14 | 1,305 | 1,541 |
| 811 | Meteorites | 1 | 14 | 1,106 | 1,399 |
| 822 | Law | 21 | 13 | 402 | 1,384 |
| 822 | Patient education | 1 | 13 | 872 | 1,150 |
| 822 | Education policy | 1 | 13 | 173 | 289 |
| 822 | Ion Exchange | 1 | 13 | 219 | 256 |
| 822 | sanitation | 1 | 13 | 1,983 | 2,592 |
| 822 | solar power | 1 | 13 | 1,289 | 1,664 |
| 822 | counseling | 1 | 13 | 1,893 | 1,982 |
| 822 | Solvent extraction | 1 | 13 | 219 | 256 |
| 822 | solar cells | 1 | 13 | 1,365 | 1,742 |
| 822 | software | 2 | 13 | 1,245 | 1,966 |
| 822 | antibiotics | 4 | 13 | 154 | 661 |
| 822 | Heterocyclic compounds | 3 | 13 | 1,011 | 1,551 |
| 834 | Humanities | 10 | 12 | 889 | 2,944 |
| 834 | Thermodynamics | 1 | 12 | 1,898 | 1,823 |
| 834 | Historic Preservation | 3 | 12 | 121 | 332 |
| 834 | Industrial Safety | 3 | 12 | 1,191 | 2,062 |
| 834 | health behavior | 1 | 12 | 1,363 | 1,683 |
| 834 | Thermochemistry | 1 | 12 | 772 | 933 |
| 834 | Hallucinogens | 1 | 12 | 336 | 479 |
| 834 | Health promotion | 1 | 12 | 1,740 | 1,894 |
| 834 | Social behavior | 1 | 12 | 1,735 | 2,016 |
| 834 | masculinity | 1 | 12 | 209 | 328 |
| 834 | Criminal investigation | 1 | 12 | 349 | 415 |
| 845 | Software Engineering | 1 | 11 | 1,456 | 1,610 |
| 845 | Game Theory | 1 | 11 | 902 | 960 |
| 845 | Chronobiology | 3 | 11 | 494 | 1,053 |
| 845 | Magnetic Resonance Imaging | 2 | 11 | 481 | 764 |
| 845 | Health Policy | 2 | 11 | 2,302 | 3,268 |
| 845 | Process Control | 1 | 11 | 1,480 | 1,936 |
| 845 | Orthopedic Surgery | 1 | 11 | 1,046 | 1,214 |
| 845 | Operator theory | 3 | 11 | 458 | 690 |
| 845 | Periglacial processes | 2 | 11 | 165 | 364 |
| 845 | biological clocks | 3 | 11 | 494 | 1,053 |
| 845 | cultural policy | 2 | 11 | 289 | 456 |
| 845 | Electron Microscopy | 1 | 11 | 653 | 760 |
| 845 | Moral Education | 2 | 11 | 184 | 390 |
| 845 | Production Management | 1 | 11 | 1,738 | 2,184 |
| 845 | orphan drugs | 1 | 11 | 155 | 101 |
| 845 | Magnetic Resonance Spectroscopy | 2 | 11 | 1,218 | 1,589 |
| 845 | Communism | 2 | 11 | 196 | 318 |
| 845 | visualization | 3 | 11 | 1,383 | 1,662 |
| 845 | nuclear magnetic resonance spectroscopy | 2 | 11 | 841 | 1,138 |
| 845 | Permafrost | 2 | 11 | 165 | 364 |
| 845 | circadian rhythm | 3 | 11 | 494 | 1,053 |
| 845 | Frozen ground | 2 | 11 | 167 | 365 |
| 845 | periodicity | 3 | 11 | 40 | 82 |
| 845 | NMR | 2 | 11 | 669 | 952 |
| 845 | cycles | 3 | 11 | 156 | 354 |
| 870 | Food Science | 2 | 10 | 305 | 656 |
| 870 | Polymer Engineering | 2 | 10 | 156 | 381 |
| 870 | Fluid Mechanics | 1 | 10 | 2,097 | 2,308 |
| 870 | Palynology | 2 | 10 | 307 | 527 |
| 870 | Food Preservation | 2 | 10 | 1,041 | 1,585 |
| 870 | Human Rights | 2 | 10 | 722 | 1,117 |
| 870 | Crystallization | 3 | 10 | 506 | 844 |
| 870 | Immunohistochemistry | 3 | 10 | 168 | 392 |
| 870 | Environmental Geochemistry | 1 | 10 | 1,128 | 1,526 |
| 870 | Fiber Optics | 2 | 10 | 1,054 | 1,538 |
| 870 | Interferons | 1 | 10 | 483 | 648 |
| 870 | Genetic variation | 1 | 10 | 257 | 428 |
| 870 | Microbial Metabolism | 1 | 10 | 418 | 766 |
| 870 | Constructivism | 2 | 10 | 72 | 160 |
| 870 | Semigroups | 2 | 10 | 408 | 456 |
| 870 | Telecommunication | 3 | 10 | 2,437 | 3,517 |
| 870 | supercritical fluids | 1 | 10 | 686 | 990 |
| 870 | Continental shelf | 1 | 10 | 588 | 817 |
| 870 | Social work | 3 | 10 | 1,301 | 2,255 |
| 870 | mental processes | 1 | 10 | 607 | 700 |
| 870 | evaluation | 1 | 10 | 334 | 458 |
| 870 | Cytokine | 1 | 10 | 629 | 923 |
| 870 | Minerals | 1 | 10 | 1,427 | 1,836 |
| 870 | liver | 1 | 10 | 488 | 669 |
| 894 | Teratology | 1 | 9 | 400 | 582 |
| 894 | Neuroimaging | 1 | 9 | 454 | 600 |
| 894 | Paleobiology | 1 | 9 | 624 | 720 |
| 894 | civil rights | 1 | 9 | 720 | 836 |
| 894 | adolescence | 1 | 9 | 1,456 | 1,850 |
| 894 | Adolescent Psychology | 1 | 9 | 1,265 | 1,594 |
| 894 | Neuropharmacology | 1 | 9 | 923 | 1,196 |
| 894 | Consumer Protection | 1 | 9 | 400 | 569 |
| 894 | DNA methylation | 1 | 9 | 481 | 730 |
| 894 | optical instruments | 1 | 9 | 521 | 631 |
| 894 | exobiology | 1 | 9 | 473 | 655 |
| 894 | consumers | 1 | 9 | 753 | 996 |
| 894 | Customer Relations | 1 | 9 | 179 | 263 |
| 894 | optical phenomena | 1 | 9 | 229 | 339 |
| 894 | Host-parasite interactions | 1 | 9 | 1,588 | 2,148 |
| 894 | abnormalities | 1 | 9 | 268 | 415 |
| 894 | Virulence | 1 | 9 | 1,351 | 1,888 |
| 894 | color | 3 | 9 | 235 | 636 |
| 912 | Physical Therapy | 2 | 8 | 1,397 | 2,108 |
| 912 | Internet of Things | 1 | 8 | 1,599 | 2,012 |
| 912 | Psychiatric Nursing | 1 | 8 | 1,084 | 1,370 |
| 912 | Nuclear Fusion | 1 | 8 | 806 | 941 |
| 912 | Radiation Protection | 1 | 8 | 1,039 | 1,068 |
| 912 | nutrition policy | 1 | 8 | 205 | 332 |
| 912 | radiation monitoring | 1 | 8 | 938 | 997 |
| 912 | Marine Pollution | 1 | 8 | 1,814 | 2,446 |
| 912 | Environmental risk assessment | 1 | 8 | 783 | 1,131 |
| 912 | forestry | 1 | 8 | 397 | 612 |
| 912 | internet | 1 | 8 | 2,348 | 2,759 |
| 912 | Soviet Union | 2 | 8 | 898 | 1,265 |
| 912 | Culture | 6 | 8 | 764 | 1,773 |
| 912 | Radiation dosimetry | 1 | 8 | 792 | 834 |
| 912 | fusion reactors | 1 | 8 | 613 | 693 |
| 927 | Gender Studies | 1 | 7 | 916 | 1,223 |
| 927 | American Literature | 7 | 7 | 376 | 329 |
| 927 | Pediatric Hematology | 3 | 7 | 361 | 656 |
| 927 | Ceramics | 1 | 7 | 2,073 | 2,343 |
| 927 | Environmental Law | 2 | 7 | 1,243 | 2,206 |
| 927 | Engineering Geology | 1 | 7 | 1,849 | 2,273 |
| 927 | Drug targeting | 1 | 7 | 593 | 968 |
| 927 | Feminism | 1 | 7 | 1,006 | 1,160 |
| 927 | sexual orientation | 1 | 7 | 302 | 463 |
| 927 | air quality | 1 | 7 | 565 | 920 |
| 927 | Gender identity | 1 | 7 | 580 | 677 |
| 927 | Teaching | 1 | 7 | 2,642 | 3,008 |
| 927 | reasoning | 1 | 7 | 814 | 969 |
| 927 | stability | 1 | 7 | 217 | 236 |
| 927 | Sun | 1 | 7 | 496 | 635 |
| 927 | tomography | 2 | 7 | 435 | 694 |
| 927 | health planning | 6 | 7 | 1,581 | 3,753 |
| 927 | tests | 1 | 7 | 374 | 635 |
| 927 | women | 1 | 7 | 1,476 | 1,639 |
| 927 | gene transfer | 2 | 7 | 315 | 681 |
| 927 | natural disasters | 1 | 7 | 2,009 | 2,657 |
| 927 | Metals | 1 | 7 | 2,599 | 2,972 |
| 927 | genetic transformation | 2 | 7 | 315 | 681 |
| 950 | Electrical Engineering | 5 | 6 | 2,428 | 3,900 |
| 950 | Computer Science | 3 | 6 | 2,078 | 3,446 |
| 950 | Global Health | 1 | 6 | 1,742 | 2,333 |
| 950 | Urban Economics | 1 | 6 | 593 | 821 |
| 950 | Health Services Research | 1 | 6 | 2,253 | 2,934 |
| 950 | Language Acquisition | 1 | 6 | 613 | 809 |
| 950 | Labor Economics | 1 | 6 | 839 | 1,030 |
| 950 | X-ray spectroscopy | 1 | 6 | 368 | 520 |
| 950 | Bilingualism | 1 | 6 | 311 | 527 |
| 950 | Urbanization | 1 | 6 | 412 | 630 |
| 950 | Autoantibodies | 1 | 6 | 745 | 1,100 |
| 950 | Autoimmunity | 1 | 6 | 909 | 1,318 |
| 950 | Biometrics | 1 | 6 | 1,403 | 1,718 |
| 950 | Food preferences | 2 | 6 | 478 | 1,027 |
| 950 | Estuaries | 1 | 6 | 241 | 427 |
| 950 | immunoassay | 3 | 6 | 189 | 669 |
| 950 | Autoimmune diseases | 1 | 6 | 825 | 1,221 |
| 950 | European Union | 2 | 6 | 208 | 444 |
| 968 | Proteomics | 1 | 5 | 1,434 | 1,989 |
| 968 | Phenomenology | 1 | 5 | 485 | 480 |
| 968 | Radiation Oncology | 1 | 5 | 540 | 773 |
| 968 | Sustainable Engineering | 1 | 5 | 2,319 | 3,044 |
| 968 | Developmental Psychology | 1 | 5 | 1,534 | 2,024 |
| 968 | International Law | 2 | 5 | 500 | 518 |
| 968 | Number Theory | 2 | 5 | 1,003 | 1,387 |
| 968 | History of Medicine | 1 | 5 | 748 | 675 |
| 968 | Nuclear Chemistry | 1 | 5 | 1,617 | 1,947 |
| 968 | Radiochemistry | 1 | 5 | 1,539 | 1,827 |
| 968 | Animal breeding | 2 | 5 | 878 | 1,538 |
| 968 | Lymphoma | 1 | 5 | 510 | 685 |
| 968 | Multiple Myeloma | 1 | 5 | 503 | 678 |
| 968 | Evidence-Based Medicine | 1 | 5 | 1,234 | 1,694 |
| 968 | Cardiovascular diseases | 2 | 5 | 1,520 | 2,342 |
| 968 | X-rays | 1 | 5 | 866 | 1,063 |
| 968 | particles | 1 | 5 | 1,669 | 2,222 |
| 968 | water reuse | 1 | 5 | 693 | 1,203 |
| 968 | Germany | 2 | 5 | 810 | 1,209 |
| 968 | sports injuries | 1 | 5 | 928 | 1,295 |
| 988 | Literature | 11 | 4 | 363 | 741 |
| 988 | Nephrology | 1 | 4 | 678 | 956 |
| 988 | Health Services Administration | 2 | 4 | 1,233 | 2,385 |
| 988 | Biopharmaceutics | 1 | 4 | 1,498 | 2,077 |
| 988 | Nonparametric Statistics | 1 | 4 | 379 | 515 |
| 988 | Environmental Archaeology | 1 | 4 | 165 | 304 |
| 988 | Coastal zone management | 1 | 4 | 1,119 | 1,717 |
| 988 | Bioethics | 2 | 4 | 1,084 | 1,825 |
| 988 | Medical Ethics | 1 | 4 | 1,649 | 2,112 |
| 988 | Biotransformation | 1 | 4 | 281 | 561 |
| 988 | Well-being | 1 | 4 | 333 | 617 |
| 988 | Accreditation | 1 | 4 | 146 | 268 |
| 988 | Urban Anthropology | 1 | 4 | 382 | 620 |