Classification
D - World History
129
H - Social Science
115
B - Philosophy, Psychology, Religion
64
A - General Works
60
P - Language and Literature
55
S - Agriculture
43
T - Technology
38
Z - Library Science
34
L - Education
33
Q - Science
27
M - Music
25
K - Law
22
R - Medicine
18
F - General American History
17
J - Political Science
13
N - Fine Arts
11
G - Geography, Anthropology, Recreation
9
U - Military Science
3
E - United States History
1