Topogràfic
B - Filosofia, Psicologia, Religió
152
P - Language and Literature
126
H - Social Science
51
D - World History
27
F - General American History
14
M - Music
13
N - Fine Arts
13
K - Law
11
J - Political Science
9
R - Medicine
8
G - Geography, Anthropology, Recreation
5
L - Education
4
Q - Science
4
C - Historical Sciences
3
E - United States History
2
T - Technology
2
Z - Library Science
2