Classification
UPT - Water pollution control and measurement
3
UPP - Water pollution
2
UPVC - Groundwater
2
CLP - Colloid chemistry, surface chemistry
1
FEJP - Porous media, capillarity
1
LCO - Hydrobiology
1
UCS - Environmental chemistry
1
UPA - Water - handbooks
1
UPCE - Water chemistry
1
UPPE - Biological indicators of water pollution
1
URA - Soil chemistry
1