Número de Clasificación
- D - World History 66 results
- H - Social Science 57 results
- P - Language and Literature 25 results
- J - Political Science 17 results
- N - Fine Arts 10 results
- T - Technology 9 results
- F - General American History 4 results
- G - Geography, Anthropology, Recreation 4 results
- K - Law 2 results
- B - Philosophy, Psychology, Religion 1 results
- Q - Science 1 results