Classification
P - Language and Literature
232
D - World History
37
G - Geography, Anthropology, Recreation
32
Q - Science
18
B - Philosophy, Psychology, Religion
13
F - General American History
11
N - Fine Arts
10
H - Social Science
7
R - Medicine
5
E - United States History
3
J - Political Science
3
Z - Library Science
3
K - Law
2
M - Music
2
S - Agriculture
2
A - General Works
1
C - Historical Sciences
1
L - Education
1
T - Technology
1