Klassifikationsnummer
- P - Language and Literature 500 results
- B - Philosophy, Psychology, Religion 10 results
- D - World History 8 results
- G - Geography, Anthropology, Recreation 6 results
- M - Music 3 results
- A - General Works 1 results
- C - Historical Sciences 1 results
- N - Fine Arts 1 results
- Z - Library Science 1 results