Subfield
- Demography36
- Applied Mathematics35
- Development35
- Sociology and Political Science34
- Waste Management and Disposal34
- Communication33
- Pollution31
- Law30
- Energy Engineering and Power Technology29
- General Economics, Econometrics and Finance29
- Plant Science29
- Finance27
- Management, Monitoring, Policy and Law27
- Virology26
- Water Science and Technology25
- Forestry24
- Small Animals24
- Nutrition and Dietetics23
- Urban Studies23
- Microbiology22