Classification
URA - Soil chemistry
174
GNA - Geology - soil sciences
41
LWH - Agriculture - soil sciences
41
LCN - Ecology - soil sciences
27
UCS - Environmental chemistry
18
UCE - Environmental impact, environmental pollution
17
LTN - Biotechnology - biodegradation
13
UVF - Environmental aspects of heavy metals and their compounds
13
USGH - Contaminated sites
12
LWE - Agriculture - general aspects
10
UPVC - Groundwater
10
LCNA - Soil microbiology
9
UAD - Environment - comprehensive works
9
UCA - Environmental problems, man and environment - general aspects
9
UVM - Environmental aspects of hydrocarbons - incl. oil
9
UAA - Environment - reference books
8
UCQ - Environmental technology
8
UPP - Water pollution
8
UUD - Ecotoxicology
8
UAN - Environment - mathematical methods, computer applications
6
UCGE - Control of environmental pollution - analytical methods
6
UEG - Environmental programs and expertises
6
UPN - Water protection, water quality, clean water
6
UVC - Environmental chemicals, hazardous materials - general aspects
6
UXAL - Radioisotopes in soil and groundwater
6
UCEB - Environmental pollution
5
UHP - Protection of nature and landscape
5
UPT - Water pollution control and measurement
5
GAN - Geosciences - mathematical methods, computer applications
4
UCG - Control of environmental pollution
4
UHC - Area planning and environment
4
UHN - Landscape ecology
4
UMN - Air pollution control and measurement
4
UXH - Nuclear radiation measurement
4
HRD - Dosimetry, radiation protection - medical aspects
3
LCL - Biotopes, ecosystems
3
LCM - Terrestrial ecology
3
LCV - Ecology - models
3
LHH - Microbiology - methods
3
LWW - Agriculture - transfer factors, radioagronomy
3
UCGN - Control of environmental pollution - biological methods
3
UCJ - Environmental protection - general aspects
3
UHCH - Urban areas
3
UPCE - Water chemistry
3
UVCH - Accumulation in biomaterial
3
UVT - Environmental aspects of other hazardous materials
3
UVW - Special effects of hazardous materials
3
UXA - Environmental radioactivity
3
UXC - Radioactive emission
3
UXCD - Radioactive emission by nuclear facilities
3
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