Classification
YBB - Law - general
YPB - Economy - general aspects
46
UA - Environment - general
25
YZA - Politics, political science
16
AHF - Research and science
13
MSU - Economic analysis
6
YPGE - Human resource planning, human resource management
5
AMA - Education - general
4
UEA - Environmental policy and economy - general aspects
4
UED - Environmental policy
4
YDA - Administrative law
4
YFA - Labour legislation
4
YHJ - Copyright, press law
4
CAV - Chemicals, chemical reagents
3
EXA - Energy policy
3
UAU - Fire, fire protection, safety at the workplace, prevention of accidents
3
UCJ - Environmental protection - general aspects
3
UVA - Environmental chemicals, hazardous materials - comprehensive works
3
YDM - Commercial law, commercial legislation
3
YEA - Environmental law
3
YFK - Social insurance law
3
YHA - Industrial property law, licensing rights
3
YKM - Civil legislation
3
AHZ - History of science and technology
2
HYG - Occupational medicine, sports medicine
2
TKJ - Traffic
2
UCA - Environmental problems, man and environment - general aspects
2
UMLE - Air pollution by power plants and industrial plants
2
UVC - Environmental chemicals, hazardous materials - general aspects
2
YCA - Public law
2
YDU - University and educational law
2
YDY - Media, media law
2
YKA - Criminal legislation
2
YKP - German civil law
2
YMA - International law
2
YRG - Technology transfer
2
AHP - Philosophy
1
AHX - History - general
1
AJA - Directories - general
1
CET - Special organic compounds - synthesis and reactions
1
DAE - Information technology - general
1
DHA - Computer equipment and periphery
1
DWI - Information management
1
EBA - Energy production, energy technology
1
EFA - Petroleum, natural gas
1
EGA - Oil shale, oil sands
1
EPK - Nuclear energy
1
EUR - District heating
1
GDA - Engineering geology - general
1
GWBB - Raw material supply, raw material demand
1
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