Classification
AHF - Research and science
50
AES - Universities, academies - Germany
2
AHH - Universities - research
2
DNC - Internet
2
YPGE - Human resource planning, human resource management
2
AFG - Large scale research institutions (Helmholtz Centres)
1
AHK - Scientific work
1
AHM - Theory of science
1
AHN - Media and communication science
1
AHZ - History of science and technology
1
AMAB - Industrial training, further education
1
YPGN - Project management
1
YRAB - Gender studies
1
YUD - Comprehensive statistical data - Germany
1
ZCE - Bibliometrics
1