Ταξιθετικός Αριθμός
F - General American History
53
H - Social Science
19
B - Philosophy, Psychology, Religion
6
K - Law
5
G - Geography, Anthropology, Recreation
4
E - United States History
3
J - Political Science
3
P - Language and Literature
3
L - Education
2
R - Medicine
2
A - General Works
1
D - World History
1
T - Technology
1
U - Military Science
1
Z - Library Science
1