Klassifikationsnummer
- B - Philosophy, Psychology, Religion 202 results
- H - Social Science 45 results
- E - United States History 21 results
- D - World History 6 results
- R - Medicine 5 results
- K - Law 4 results
- P - Language and Literature 4 results
- L - Education 3 results
- G - Geography, Anthropology, Recreation 2 results
- Z - Library Science 2 results
- C - Historical Sciences 1 results