- Atmospheric Protection/Air Quality Control/Air Pollution 3
- Environmental Engineering/Biotechnology 2
- Terrestrial Pollution 2
- Ecotoxicology 1
- Environment, general 1
- Environmental Chemistry 1
- Environmental Health 1
- Geotechnical Engineering & Applied Earth Sciences 1
- Hydrogeology 1
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 1