Classification
900 - History & geography
8
300 - Social sciences
2
100 - Philosophy & psychology
1
305 - Social groups
1
309 - [Unassigned]
1
320 - Political science
1
331 - Labor economics
1
338 - Production
1
901 - Philosophy & theory
1
907 - Education, research & related topics
1
943 - Central Europe; Germany
1