Classification
P - Language and Literature
2,120
K - Law
1,643
H - Social Science
346
L - Education
68
J - Political Science
51
D - World History
27
S - Agriculture
15
Q - Science
14
T - Technology
13
G - Geography, Anthropology, Recreation
11
B - Philosophy, Psychology, Religion
10
R - Medicine
10
U - Military Science
8
Z - Library Science
5
N - Fine Arts
4
A - General Works
3
M - Music
2
E - United States History
1