Classification
UVW - Special effects of hazardous materials
4
HYE - Environmental health
2
HPT - Toxicology
1
HTE - Oncology - general
1
LWV - Agriculture - plant protection
1
UPP - Water pollution
1
UVA - Environmental chemicals, hazardous materials - comprehensive works
1
UVC - Environmental chemicals, hazardous materials - general aspects
1
UVT - Environmental aspects of other hazardous materials
1
YEF - Law on hazardous materials
1