Classification
EXA - Energy policy
EVA - Energy demand, energy supply - comprehensive works
23
EVH - Energy supply - economic growth
17
EVN - Energy supply - future aspects
4
EWA - Energy economy
3
YBB - Law - general
2
YPB - Economy - general aspects
2
ECA - Energy resources
1
ENA - Energy from biomass and waste
1
EPK - Nuclear energy
1
ETC - Energy conversion
1
EVN - EnEVH - Energy supply - economic growth
1
TED - Electric power - industrial aspect
1
UEDM - Policy of clean air
1
UENH - Cost factors of air pollution and control
1
UKE - Environment and energy resources
1
YPM - National economy
1