Classification
AHA - Research and development, research politics - general
1
AHC - Research and development, research politics - Germany
1
AHE - Research and development, research politics - foreign countries
1
AHP - Philosophy
1
AJA - Directories - general
2
CWE - Chemical engineering, chemical industry - general
3
EAA - Energy - reference books
7
EAD - Energy - comprehensive works
11
EAE - Energy - general
1
EBA - Energy production, energy technology
2
ECA - Energy resources
6
EFA - Petroleum, natural gas
1
EGA - Oil shale, oil sands
4
EHA - Renewable energy sources
14
ENA - Energy from biomass and waste
1
EPK - Nuclear energy
11
ESB - Hydrogen energy
2
ETA - Energy storage
2
ETC - Energy conversion
33
ETF - Fuel cells - general
2
EUA - Energy conservation - general
5
EUD - Energy consumption
6
EUU - Cogeneration
1
EVA - Energy demand, energy supply - comprehensive works
35
EVB - Energy supply of Germany
9
EVH - Energy supply - economic growth
19
EVN - EnEVH - Energy supply - economic growth
1
EVN - Energy supply - future aspects
27
EVP - Energy models, energy system analysis
9
EWA - Energy economy
20
EXA - Energy policy
EYA - Energy problems of developing countries
8
FMPB - Steel production
1
GAN - Geosciences - mathematical methods, computer applications
1
GDA - Engineering geology - general
1
GKA - Geophysics - general
1
GRB - Climatology
1
GRBA - Climatology - general
1
GWA - Raw material economy, raw material policy
5
GWAB - National raw material reports
1
GWB - Raw materials - metals, nonmetals
1
GWBA - Raw material resources, raw material reserves
1
LAN - Biology - mathematical methods, statistics
1
LCV - Ecology - models
1
LTE - Biotechnology - general aspects
1
LWF - Agriculture - methods
1
LWV - Agriculture - plant protection
1
MSA - Mathematical methods - general
1
MSU - Economic analysis
2
MWG - Simulation, Monte Carlo method, random numbers
1
more ...