Classification
UHP - Protection of nature and landscape
131
UHN - Landscape ecology
33
LCK - Ecology - general aspects
23
LCM - Terrestrial ecology
16
UHC - Area planning and environment
10
LWE - Agriculture - general aspects
9
UCA - Environmental problems, man and environment - general aspects
7
LWV - Agriculture - plant protection
6
GPA - Geobiology - general
5
LCL - Biotopes, ecosystems
5
URA - Soil chemistry
5
GBA - General geology, historical geology
4
LCN - Ecology - soil sciences
4
GNA - Geology - soil sciences
3
LCMC - Plants - ecology
3
LWH - Agriculture - soil sciences
3
UPVF - Surface waters - streams, rivers, lakes
3
AEG - Official corporations - Germany
2
GCAA - Regional geology - Germany
2
GSC - Remote sensing
2
GUA - Geography - general
2
LCH - Ecology - methods
2
LCMG - Animals - ecology
2
LCP - Limnology
2
LWF - Agriculture - methods
2
UCJ - Environmental protection - general aspects
2
UEA - Environmental policy and economy - general aspects
2
UEG - Environmental programs and expertises
2
UMGE - Carbon capture and storage (CCS)
2
UMV - Climatic change
2
AFK - Research institutions - Germany
1
AZZ - Firm index - general
1
GDAB - Rock mechanics, soil mechanics
1
GMAD - Organic geochemistry
1
GTAK - Hydrogeology
1
GUAB - Geography - anthropological
1
GWCD - Ore mining, ore processing
1
HAE - Popular medicine
1
LAL - Biology - general aspects
1
LCNA - Soil microbiology
1
LCV - Ecology - models
1
LET - Phytopathology
1
LHH - Microbiology - methods
1
LWO - Agricultural ecology, sustainable agriculture
1
UCEA - Environmental impact
1
UCG - Control of environmental pollution
1
UCL - Environmental research
1
UCQ - Environmental technology
1
UCS - Environmental chemistry
1
UED - Environmental policy
1
more ...