Klassifikationsnummer
- B - Philosophy, Psychology, Religion 183 results
- H - Social Science 32 results
- P - Language and Literature 28 results
- L - Education 27 results
- Q - Science 27 results
- N - Fine Arts 26 results
- R - Medicine 19 results
- G - Geography, Anthropology, Recreation 11 results
- K - Law 9 results
- T - Technology 8 results
- J - Political Science 5 results
- D - World History 4 results
- C - Historical Sciences 3 results
- F - General American History 2 results
- S - Agriculture 1 results
- Z - Library Science 1 results