- Bioorganic Chemistry 7
- Medicinal Chemistry 7
- Biochemistry, general 6
- Inorganic Chemistry 6
- Microbiology 6
- Pharmacology/Toxicology 6
- Ecology 3
- Geoecology/Natural Processes 3
- Microbial Ecology 3
- Nature Conservation 3
- Water Quality/Water Pollution 3
- Bacteriology 1
- Biotechnology 1
- Life Sciences, general 1
- Medical Microbiology 1
- Organic Chemistry 1
- Plant Sciences 1
- Soil Science & Conservation 1