Classification
HPT - Toxicology
4
UUD - Ecotoxicology
2
CAV - Chemicals, chemical reagents
1
HYE - Environmental health
1
UVC - Environmental chemicals, hazardous materials - general aspects
1
UVF - Environmental aspects of heavy metals and their compounds
1
UVH - Environmental aspects of other metals and their compounds
1
UVT - Environmental aspects of other hazardous materials
1
UVW - Special effects of hazardous materials
1