Subfield
- Strategy and Management55
- Waste Management and Disposal53
- Demography50
- Applied Mathematics48
- General Economics, Econometrics and Finance48
- Communication45
- Pollution45
- Health44
- Sociology and Political Science44
- Management, Monitoring, Policy and Law43
- Finance39
- Water Science and Technology37
- Urban Studies36
- Plant Science35
- Social Psychology35
- Forestry33
- General Social Sciences33
- Library and Information Sciences33
- Virology33
- Management of Technology and Innovation32