Classification
URA - Soil chemistry
12
GNA - Geology - soil sciences
3
LWE - Agriculture - general aspects
2
LWH - Agriculture - soil sciences
2
UAN - Environment - mathematical methods, computer applications
2
LCL - Biotopes, ecosystems
1
LCN - Ecology - soil sciences
1
LCV - Ecology - models
1
UCGE - Control of environmental pollution - analytical methods
1
UCS - Environmental chemistry
1
UENG - Cost factors of water pollution and control
1
UHN - Landscape ecology
1
UPCE - Water chemistry
1
UPP - Water pollution
1
UPTN - Inorganic pollutants in water
1
UPVC - Groundwater
1