Classification
P - Language and Literature
1,150
Q - Science
24
T - Technology
14
B - Philosophy, Psychology, Religion
12
H - Social Science
11
K - Law
7
D - World History
5
G - Geography, Anthropology, Recreation
5
J - Political Science
4
S - Agriculture
2
F - General American History
1
L - Education
1
Z - Library Science
1