Classification
FNK - Plastics - application, engineering aspects
2
ALE - Biographies of scientists and Nobel prize winners - individual
1
EHA - Renewable energy sources
1
EUA - Energy conservation - general
1
EVA - Energy demand, energy supply - comprehensive works
1
EVB - Energy supply of Germany
1
FPTH - Embrittlement
1
PLA - Astrosciences - general
1