Classification
LWVC - Plant protection
20
LWE - Agriculture - general aspects
3
UVC - Environmental chemicals, hazardous materials - general aspects
3
UVW - Special effects of hazardous materials
3
HPT - Toxicology
2
URA - Soil chemistry
2
UVCH - Accumulation in biomaterial
2
CAV - Chemicals, chemical reagents
1
CTR - Chromatography
1
CTS - Gas chromatography
1
CUP - Vibrational spectroscopy
1
HYE - Environmental health
1
LWA - Agriculture - reference books
1
UPT - Water pollution control and measurement
1
UPTF - Organic pollutants in water
1
UPVC - Groundwater
1