Classification
EXA - Energy policy
7
EPK - Nuclear energy
6
TNA - Nuclear engineering - general
4
TNG - Breeder reactors
3
EFA - Petroleum, natural gas
2
EVA - Energy demand, energy supply - comprehensive works
2
UA - Environment - general
2
AHP - Philosophy
1
EAE - Energy - general
1
ECA - Energy resources
1
ETC - Energy conversion
1
EVN - Energy supply - future aspects
1
EVP - Energy models, energy system analysis
1
GMAD - Organic geochemistry
1
GWBA - Raw material resources, raw material reserves
1
PGKA - Physics of thermonuclear fusion
1
PGN - Fusion technology, plasma devices
1
UKA - Environmental damage and energy production
1
UKL - Environment and nuclear power
1
UMG - Technology of clean air
1
UMNE - Air pollution by gaseous pollutants
1
YRC - Technology and society
1