Classification
HPT - Toxicology
7
UVW - Special effects of hazardous materials
5
LWV - Agriculture - plant protection
4
HYE - Environmental health
3
LWVC - Plant protection
2
UVC - Environmental chemicals, hazardous materials - general aspects
2
CTS - Gas chromatography
1
LWF - Agriculture - methods
1
YEF - Law on hazardous materials
1