Subfield
- Education41
- Human Factors and Ergonomics28
- Political Science and International Relations18
- Safety Research15
- Demography14
- Sociology and Political Science13
- Accounting10
- Communication8
- Gender Studies8
- Health8
- General Agricultural and Biological Sciences7
- Infectious Diseases7
- Management of Technology and Innovation7
- Urban Studies7
- Energy Engineering and Power Technology6
- Social Psychology6
- General Economics, Econometrics and Finance5
- Marketing5
- Strategy and Management5
- Waste Management and Disposal5