Classification
UPP - Water pollution
135
UPVC - Groundwater
19
UPN - Water protection, water quality, clean water
15
LCO - Hydrobiology
9
UPT - Water pollution control and measurement
9
URA - Soil chemistry
9
UPCE - Water chemistry
8
UCS - Environmental chemistry
6
UPC - Water - general aspects
6
UCEA - Environmental impact
5
UVC - Environmental chemicals, hazardous materials - general aspects
5
UPVF - Surface waters - streams, rivers, lakes
4
UXAH - Radioisotopes in water
4
LWH - Agriculture - soil sciences
3
UPK - Water resources, water supply
3
UPPE - Biological indicators of water pollution
3
UPVN - Ocean water, coastal waters
3
CT - Chemical methods of materials analysis
2
GBH - Marine geology
2
HPT - Toxicology
2
UAN - Environment - mathematical methods, computer applications
2
UCEB - Environmental pollution
2
UMK - Air pollution - general aspects
2
UPTF - Organic pollutants in water
2
UPW - Drinking water
2
USDK - Industrial waste
2
USG - Waste treatment, waste disposal
2
USK - Waste water
2
UUD - Ecotoxicology
2
UVF - Environmental aspects of heavy metals and their compounds
2
CHRV - Water and its properties
1
CXUR - Surfactants
1
CXUV - Polymers, dyes
1
FEJP - Porous media, capillarity
1
GBC - Paleoclimatology
1
GBHA - Geology of coasts, geology of estuaries
1
GTA - Hydrology - general
1
GUAA - Geography - physical
1
GVA - Oceanography
1
HEG - Endocrinology
1
HPE - Pharmacology - general aspects
1
HYE - Environmental health
1
LCT - Radioecology
1
LGR - Animal physiology
1
LHH - Microbiology - methods
1
LTH - Biotechnology - methods
1
LTN - Biotechnology - biodegradation
1
LWP - Agriculture - animal husbandry
1
LWV - Agriculture - plant protection
1
THJ - Machining
1
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