Classification
UHP - Protection of nature and landscape
10
UED - Environmental policy
7
UMV - Climatic change
7
UCJ - Environmental protection - general aspects
6
UCQ - Environmental technology
5
UEA - Environmental policy and economy - general aspects
4
GBA - General geology, historical geology
3
TKF - Power plants
3
TNB - Nuclear power plants
3
UCEB - Environmental pollution
3
UCL - Environmental research
3
UEN - Environmental economy
3
UHN - Landscape ecology
3
USGP - Waste treatment - other methods
3
EVN - Energy supply - future aspects
2
GAN - Geosciences - mathematical methods, computer applications
2
UCA - Environmental problems, man and environment - general aspects
2
UCE - Environmental impact, environmental pollution
2
UKA - Environmental damage and energy production
2
UKL - Environment and nuclear power
2
UPP - Water pollution
2
UPVN - Ocean water, coastal waters
2
UVC - Environmental chemicals, hazardous materials - general aspects
2
YRC - Technology and society
2
AHZ - History of science and technology
1
CLG - Catalysis - surveys, general aspects
1
DSA - Computer graphics, image/photo editing
1
EAD - Energy - comprehensive works
1
EPK - Nuclear energy
1
ETC - Energy conversion
1
ETF - Fuel cells - general
1
GCAA - Regional geology - Germany
1
GRBN - Climatological models
1
GWA - Raw material economy, raw material policy
1
HCI - Radiation biology, dosimetry
1
LCM - Terrestrial ecology
1
LCN - Ecology - soil sciences
1
LTH - Biotechnology - methods
1
LWE - Agriculture - general aspects
1
LWV - Agriculture - plant protection
1
MNLA - Computational methods in mathematics
1
MNLB - Computational methods in physics
1
PEJ - Laser physics, laser materials
1
PEJC - Chemical laser
1
TED - Electric power - industrial aspect
1
TNJ - Nuclear reactor technology
1
TNO - Nuclear reactor safety
1
UAN - Environment - mathematical methods, computer applications
1
UCEA - Environmental impact
1
UCGN - Control of environmental pollution - biological methods
1
more ...