Classification
P - Language and Literature
34
D - World History
30
B - Philosophy, Psychology, Religion
25
M - Music
18
C - Historical Sciences
16
A - General Works
9
N - Fine Arts
8
H - Social Science
7
Q - Science
7
G - Geography, Anthropology, Recreation
5
K - Law
5
R - Medicine
4
Z - Library Science
3
E - United States History
2
J - Political Science
2
F - General American History
1
L - Education
1
S - Agriculture
1
U - Military Science
1