Classification
LWO - Agricultural ecology, sustainable agriculture
63
LWE - Agriculture - general aspects
7
LER - Plant physiology - ecological aspects
4
UEF - Sustainability
4
UHN - Landscape ecology
4
LCL - Biotopes, ecosystems
3
LENS - Plant physiology - stress factors
3
LTV - Green genetic engineering
3
UEN - Environmental economy
3
LCK - Ecology - general aspects
2
LCN - Ecology - soil sciences
2
LHL - Microbiology - general aspects
2
LTX - Bioeconomy
2
UED - Environmental policy
2
UHC - Area planning and environment
2
UKE - Environment and energy resources
2
UMV - Climatic change
2
AHZ - History of science and technology
1
EHA - Renewable energy sources
1
EIK - Solar energy application
1
ENA - Energy from biomass and waste
1
EWA - Energy economy
1
GRB - Climatology
1
GWA - Raw material economy, raw material policy
1
LCD - Ecology - comprensive works
1
LCM - Terrestrial ecology
1
LCR - Ecology of microorganisms - land and water
1
LEN - Plant physiology
1
LET - Phytopathology
1
LHW - Bacteria - general aspects
1
LVH - Food science - technologies
1
LWD - Agriculture - comprehensive works
1
LWF - Agriculture - methods
1
LWH - Agriculture - soil sciences
1
LWP - Agriculture - animal husbandry
1
LWV - Agriculture - plant protection
1
UAA - Environment - reference books
1
UCA - Environmental problems, man and environment - general aspects
1
UCE - Environmental impact, environmental pollution
1
UCJ - Environmental protection - general aspects
1
UEA - Environmental policy and economy - general aspects
1
UHP - Protection of nature and landscape
1
UMA - Atmospheric sciences
1
USU - Waste recycling
1
UUG - Environmental aspects of genetically modified organisms, viruses, genes
1
UVR - Environmental aspects of halogens and halogenated hydrocarbons
1
UXA - Environmental radioactivity
1
YPB - Economy - general aspects
1