Classification
P - Language and Literature
143
H - Social Science
36
D - World History
30
Q - Science
19
K - Law
13
L - Education
11
J - Political Science
10
S - Agriculture
4
M - Music
2
T - Technology
2
A - General Works
1
B - Philosophy, Psychology, Religion
1
E - United States History
1
N - Fine Arts
1
U - Military Science
1
Z - Library Science
1