Classification
UVW - Special effects of hazardous materials
9
HPT - Toxicology
7
HYE - Environmental health
2
UUD - Ecotoxicology
2
UVA - Environmental chemicals, hazardous materials - comprehensive works
2
GNA - Geology - soil sciences
1
HYB - Public health, health politics
1
LWF - Agriculture - methods
1
LWH - Agriculture - soil sciences
1
LWV - Agriculture - plant protection
1
LWVC - Plant protection
1
URA - Soil chemistry
1
UVC - Environmental chemicals, hazardous materials - general aspects
1
UVR - Environmental aspects of halogens and halogenated hydrocarbons
1
UVT - Environmental aspects of other hazardous materials
1
YEF - Law on hazardous materials
1