Classification
EXA - Energy policy
88
EHA - Renewable energy sources
6
EPK - Nuclear energy
3
EVA - Energy demand, energy supply - comprehensive works
3
EVN - Energy supply - future aspects
3
EUD - Energy consumption
2
EVP - Energy models, energy system analysis
2
UEF - Sustainability
2
UKA - Environmental damage and energy production
2
EVB - Energy supply of Germany
1
EWA - Energy economy
1
GRBA - Climatology - general
1
UEA - Environmental policy and economy - general aspects
1
UED - Environmental policy
1
UMV - Climatic change
1
YEM - Energy law
1
YPB - Economy - general aspects
1