Classification
LWE - Agriculture - general aspects
ENA - Energy from biomass and waste
3
LWV - Agriculture - plant protection
3
UPN - Water protection, water quality, clean water
3
LEN - Plant physiology
2
LVE - Food science - general
2
LWA - Agriculture - reference books
2
LWH - Agriculture - soil sciences
2
YUD - Comprehensive statistical data - Germany
2
GUA - Geography - general
1
LCL - Biotopes, ecosystems
1
LCN - Ecology - soil sciences
1
LCNC - Soil science - water transport
1
LEE - Botany - general aspects
1
LENI - Plant physiology - transport processes
1
LTV - Green genetic engineering
1
LWO - Agricultural ecology, sustainable agriculture
1
LWW - Agriculture - transfer factors, radioagronomy
1
UEF - Sustainability
1
UKE - Environment and energy resources
1
UPVC - Groundwater
1
URA - Soil chemistry
1
UUG - Environmental aspects of genetically modified organisms, viruses, genes
1
UVF - Environmental aspects of heavy metals and their compounds
1