Classification
AHP - Philosophy
16
AAE - Popular science - general aspects
9
YRC - Technology and society
5
YZA - Politics, political science
4
AHF - Research and science
3
AHM - Theory of science
3
AHX - History - general
3
AHZ - History of science and technology
3
YRA - Social studies
3
AHK - Scientific work
2
AHPC - Ethics
2
AHPE - Philosophy of Science
2
AMA - Education - general
2
HDG - Psychology, psychiatry
2
LCK - Ecology - general aspects
2
YPB - Economy - general aspects
2
YRCD - Informatics, information and society
2
AEK - Official corporations - Europe
1
AFC - Research institutions, scientific organizations - Germany ( DFG, MPG, FHG )
1
AHL - Presentations, lectures, discussions
1
ALD - Biographies of scientists and Nobel prize winners - collected
1
AYA - Sciences - general aspects
1
DAE - Information technology - general
1
DZC - Man and computer
1
GRB - Climatology
1
HAM - Medicine - theoretical and philosophical fundamentals
1
HDS - Neurophysiology, neuroanatomy
1
LTX - Bioeconomy
1
LWO - Agricultural ecology, sustainable agriculture
1
PAM - Physics - miscellaneous topics
1
PLA - Astrosciences - general
1
UMV - Climatic change
1
YRB - Social sciences, sociology
1
YRE - Risk assessment
1
ZAB - Media studies (without bibliology)
1