Classification
YPM - National economy
139
YPB - Economy - general aspects
18
YZA - Politics, political science
16
YPO - Economic policy
5
YMG - Law of international and supranational organizations
4
YPG - Business management
3
AEG - Official corporations - Germany
2
TKJ - Traffic
2
UEA - Environmental policy and economy - general aspects
2
YRA - Social studies
2
AHK - Scientific work
1
EPK - Nuclear energy
1
EWA - Energy economy
1
EXA - Energy policy
1
FAQ - Materials research - institutions, research and development
1
LTO - Biotechnology - application, industry
1
LVE - Food science - general
1
TBF - Semiconductor devices
1
UEN - Environmental economy
1
UHK - Traffic and environment - incl. automobile exhaust gas
1
UKE - Environment and energy resources
1
YPGC - Knowledge management
1
YPI - Corporate governance
1
YPW - Economy of industry branches
1
YRC - Technology and society
1