Classification
UKA - Environmental damage and energy production
37
UMV - Climatic change
18
UKE - Environment and energy resources
15
UKB - Environmental effects and energy
10
UCA - Environmental problems, man and environment - general aspects
9
UEA - Environmental policy and economy - general aspects
8
UHK - Traffic and environment - incl. automobile exhaust gas
7
UKH - Environment and power plants, industrial plants
7
UED - Environmental policy
4
ECA - Energy resources
3
EVA - Energy demand, energy supply - comprehensive works
3
EVN - Energy supply - future aspects
3
EXA - Energy policy
3
GWA - Raw material economy, raw material policy
3
UAN - Environment - mathematical methods, computer applications
3
UCQ - Environmental technology
3
YRC - Technology and society
3
EAD - Energy - comprehensive works
2
ETC - Energy conversion
2
ETF - Fuel cells - general
2
GRB - Climatology
2
UCE - Environmental impact, environmental pollution
2
UCJ - Environmental protection - general aspects
2
UEN - Environmental economy
2
UMB - Atmospheric chemistry
2
UMLE - Air pollution by power plants and industrial plants
2
URA - Soil chemistry
2
YRA - Social studies
2
AFC - Research institutions, scientific organizations - Germany ( DFG, MPG, FHG )
1
CNW - Electrochemical energy production and conversion
1
EAA - Energy - reference books
1
EPK - Nuclear energy
1
ESB - Hydrogen energy
1
EVB - Energy supply of Germany
1
GRBA - Climatology - general
1
GWBA - Raw material resources, raw material reserves
1
UAM - Environmental models
1
UEF - Sustainability
1
UEG - Environmental programs and expertises
1
UKL - Environment and nuclear power
1
UMK - Air pollution - general aspects
1
UML - Air pollution by special sources
1
UMN - Air pollution control and measurement
1
USG - Waste treatment, waste disposal
1
USU - Waste recycling
1
UXS - Radioactive waste management
1