Subfield
- Infectious Diseases42
- Soil Science31
- Parasitology30
- Agronomy and Crop Science24
- Plant Science22
- Public Health, Environmental and Occupational Health20
- Pediatrics, Perinatology and Child Health19
- General Agricultural and Biological Sciences17
- Pollution16
- Human Factors and Ergonomics15
- Political Science and International Relations15
- Health14
- Obstetrics and Gynecology14
- Animal Science and Zoology13
- Sociology and Political Science13
- Urban Studies13
- Forestry12
- Waste Management and Disposal12
- Nutrition and Dietetics11
- Research and Theory11