Área/Cota
- P - Language and Literature 86,363 results
- Q - Science 54,674 results
- H - Social Science 51,474 results
- D - World History 41,936 results
- B - Philosophy, Psychology, Religion 38,635 results
- T - Technology 33,786 results
- N - Fine Arts 19,437 results
- G - Geography, Anthropology, Recreation 16,025 results
- L - Education 15,137 results
- K - Law 15,034 results
- J - Political Science 13,858 results
- M - Music 13,603 results
- R - Medicine 11,612 results
- S - Agriculture 10,933 results
- E - United States History 5,291 results
- F - General American History 5,201 results
- Z - Library Science 3,126 results
- C - Historical Sciences 2,562 results
- U - Military Science 1,867 results
- A - General Works 862 results
- V - Naval Science 575 results