Klassifikationsnummer
- H - Social Science 1,673 results
- L - Education 357 results
- B - Philosophy, Psychology, Religion 258 results
- P - Language and Literature 250 results
- J - Political Science 219 results
- R - Medicine 206 results
- G - Geography, Anthropology, Recreation 126 results
- Q - Science 95 results
- D - World History 42 results
- K - Law 32 results
- T - Technology 20 results
- E - United States History 19 results
- U - Military Science 14 results
- S - Agriculture 7 results
- F - General American History 5 results
- M - Music 5 results
- A - General Works 4 results
- Z - Library Science 4 results
- C - Historical Sciences 3 results
- N - Fine Arts 3 results