Classification
UAD - Environment - comprehensive works
86
UAA - Environment - reference books
14
UCA - Environmental problems, man and environment - general aspects
14
UCS - Environmental chemistry
10
UCJ - Environmental protection - general aspects
6
UAX - Environment - information systems, literature guides
5
HYE - Environmental health
3
UVC - Environmental chemicals, hazardous materials - general aspects
3
FGN - Nanotechnology
2
FNPE - Nanostructured materials
2
GVA - Oceanography
2
HPT - Toxicology
2
LCK - Ecology - general aspects
2
UAN - Environment - mathematical methods, computer applications
2
UED - Environmental policy
2
CAD - Chemistry - comprehensive works
1
GTA - Hydrology - general
1
LCL - Biotopes, ecosystems
1
LHL - Microbiology - general aspects
1
LTE - Biotechnology - general aspects
1
UCL - Environmental research
1
UEND - Environmental costs, environmental investments
1
UKE - Environment and energy resources
1
UMN - Air pollution control and measurement
1
UPN - Water protection, water quality, clean water
1
UPP - Water pollution
1
USDN - Hazardous waste - incl. waste oil
1
USGT - Waste prevention
1
USN - Waste water treatment
1
UUD - Ecotoxicology
1
UVA - Environmental chemicals, hazardous materials - comprehensive works
1
UXCD - Radioactive emission by nuclear facilities
1
YPO - Economic policy
1