- Ecotoxicology 4
- Environment, general 3
- Environmental Chemistry 3
- Environmental Health 3
- Atmospheric Protection/Air Quality Control/Air Pollution 2
- Biochemistry, general 2
- Biological and Medical Physics, Biophysics 2
- Chemistry/Food Science, general 2
- Computer-Aided Engineering (CAD, CAE) and Design 2
- Geochemistry 2
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 2
- Artificial Intelligence 1
- Ecology 1
- Electronics and Microelectronics, Instrumentation 1
- Engineering Design 1
- Engineering, general 1
- Environmental Management 1
- IT in Business 1
- Industrial Design 1
- Information Systems Applications (incl. Internet) 1