Classification
AHK - Scientific work
161
ACE - Germanic languages, Indo-Germanic languages
4
AHF - Research and science
3
DTAD - MS - Word
3
YPD - Business economics
3
011 - Simulation Science (advanced reading)
2
AHL - Presentations, lectures, discussions
2
AHM - Theory of science
2
AHN - Media and communication science
2
AYA - Sciences - general aspects
2
AES - Universities, academies - Germany
1
AMA - Education - general
1
AMAB - Industrial training, further education
1
AMAB - industrial training, further education
1
AQAD - Reference guides to the Internet
1
DAE - Information technology - general
1
DNC - Internet
1
DUA - Text and document processing
1
HAE - Popular medicine
1
HAM - Medicine - theoretical and philosophical fundamentals
1
HDE - Neurology - general aspects
1
HDG - Psychology, psychiatry
1
LAE - Popular biology
1
LAL - Biology - general aspects
1
LAM - Biology - theoretical and philosophical fundamentals
1
YPB - Economy - general aspects
1
YPFB - Efficiency of labour
1
ZAB - Media studies (without bibliology)
1
ZAC - Bibliology
1
ZBEBB - Subject indexing
1
ZBHC - Electronic publishing
1
ZCB - Information science
1
ZCE - Bibliometrics
1