- Ecotoxicology 4
- Ecology 2
- Environmental Chemistry 2
- Environmental Management 2
- Pollution, general 2
- Analytical Chemistry 1
- Atmospheric Protection/Air Quality Control/Air Pollution 1
- Environment, general 1
- Environmental Health 1
- Geochemistry 1
- Monitoring/Environmental Analysis 1
- Soil Science & Conservation 1
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 1