Classification
D - World History
116
M - Music
63
F - General American History
47
E - United States History
31
P - Language and Literature
31
C - Historical Sciences
21
Q - Science
16
T - Technology
16
N - Fine Arts
14
A - General Works
13
B - Philosophy, Psychology, Religion
12
G - Geography, Anthropology, Recreation
5
H - Social Science
5
R - Medicine
4
U - Military Science
4
J - Political Science
2
S - Agriculture
2
V - Naval Science
2
K - Law
1
L - Education
1
Z - Library Science
1