- Biotechnology 8
- Microbial Genetics and Genomics 8
- Microbiology 8
- Applied Microbiology 5
- Biological Techniques 5
- Bioorganic Chemistry 5
- Atmospheric Protection/Air Quality Control/Air Pollution 2
- Ecotoxicology 2
- Environment, general 2
- Environmental Chemistry 2
- Environmental Health 2
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 2
- Analytical Chemistry 1
- Biochemistry, general 1
- Chemistry/Food Science, general 1
- Inorganic Chemistry 1
- Organic Chemistry 1
- Physical Chemistry 1