Número de Clasificación
- H - Social Science 747 results
- P - Language and Literature 470 results
- G - Geography, Anthropology, Recreation 86 results
- B - Philosophy, Psychology, Religion 60 results
- D - World History 37 results
- E - United States History 21 results
- J - Political Science 14 results
- R - Medicine 14 results
- T - Technology 14 results
- N - Fine Arts 11 results
- F - General American History 9 results
- L - Education 9 results
- K - Law 7 results
- C - Historical Sciences 4 results
- Q - Science 3 results
- Z - Library Science 3 results
- A - General Works 2 results
- M - Music 1 results
- U - Military Science 1 results