| Environmental Sciences |
156 |
| Water Resources |
87 |
| Economics |
47 |
| Transportation |
46 |
| Engineering, Civil |
41 |
| Engineering, Environmental |
34 |
| Environmental Studies |
34 |
| Transportation Science & Technology |
31 |
| Energy & Fuels |
29 |
| Public, Environmental & Occupational Health |
27 |
| Green & Sustainable Science & Technology |
26 |
| Geography |
25 |
| Urban Studies |
21 |
| Architecture |
19 |
| Geosciences, Multidisciplinary |
18 |
| Meteorology & Atmospheric Sciences |
12 |
| Geography, Physical |
12 |
| Engineering, Chemical |
12 |
| Construction & Building Technology |
12 |
| Operations Research & Management Science |
11 |
| Regional & Urban Planning |
9 |
| Ecology |
9 |
| Materials Science, Multidisciplinary |
8 |
| Soil Science |
7 |
| Limnology |
7 |
| Biology |
7 |
| Multidisciplinary Sciences |
6 |
| Electrochemistry |
6 |
| Biotechnology & Applied Microbiology |
5 |
| Biochemistry & Molecular Biology |
5 |
| Medicine, General & Internal |
5 |
| Computer Science, Interdisciplinary Applications |
4 |
| Planning & Development |
4 |
| Forestry |
4 |
| Biophysics |
4 |
| Health Care Sciences & Services |
3 |
| Social Sciences, Interdisciplinary |
3 |
| Thermodynamics |
3 |
| Remote Sensing |
3 |
| Health Policy & Services |
3 |
| Political Science |
3 |
| Toxicology |
3 |
| Agriculture, Multidisciplinary |
3 |
| Sociology |
3 |
| Metallurgy & Metallurgical Engineering |
2 |
| Engineering, Electrical & Electronic |
2 |
| Agronomy |
2 |
| Materials Science, Composites |
2 |
| Area Studies |
2 |
| Instruments & Instrumentation |
2 |
| Geochemistry & Geophysics |
2 |
| Development Studies |
2 |
| Mycology |
2 |
| Engineering, Multidisciplinary |
2 |
| Public Administration |
1 |
| Engineering, Geological |
1 |
| Agricultural Engineering |
1 |
| Materials Science, Biomaterials |
1 |
| Oncology |
1 |
| Imaging Science & Photographic Technology |
1 |
| Nuclear Science & Technology |
1 |
| Social Sciences, Biomedical |
1 |
| Computer Science, Artificial Intelligence |
1 |
| Nanoscience & Nanotechnology |
1 |
| Polymer Science |
1 |
| Psychology, Applied |
1 |
| Law |
1 |
| History Of Social Sciences |
1 |
| Psychology, Clinical |
1 |
| Humanities, Multidisciplinary |
1 |
| Anthropology |
1 |
| Chemistry, Multidisciplinary |
1 |
| Biodiversity Conservation |
1 |
| Pediatrics |
1 |
| Plant Sciences |
1 |
| Cardiac & Cardiovascular Systems |
1 |
| Criminology & Penology |
1 |
| Psychiatry |
1 |
| Respiratory System |
1 |
| Management |
1 |
| Physics, Applied |
1 |
| Engineering, Mechanical |
1 |
| Cell Biology |
1 |
| Education & Educational Research |
1 |
| Mechanics |
1 |
| Physics, Multidisciplinary |
1 |
| Statistics & Probability |
1 |
| Food Science & Technology |
1 |
| Evolutionary Biology |
1 |
| Chemistry, Analytical |
1 |
| Medicine, Research & Experimental |
1 |
| Rheumatology |
1 |
| Microbiology |
1 |
| Engineering, Industrial |
1 |