Classification
UPP - Water pollution
7
UPVC - Groundwater
2
LWH - Agriculture - soil sciences
1
UPK - Water resources, water supply
1
UPN - Water protection, water quality, clean water
1
UPTF - Organic pollutants in water
1
UPW - Drinking water
1
UUD - Ecotoxicology
1
UVC - Environmental chemicals, hazardous materials - general aspects
1
UVT - Environmental aspects of other hazardous materials
1