Classification
D - World History
49
P - Language and Literature
42
B - Philosophy, Psychology, Religion
32
H - Social Science
26
A - General Works
23
R - Medicine
23
C - Historical Sciences
17
M - Music
17
F - General American History
14
Q - Science
14
S - Agriculture
7
J - Political Science
5
T - Technology
5
Z - Library Science
5
G - Geography, Anthropology, Recreation
4
L - Education
4
E - United States History
3
K - Law
2
N - Fine Arts
2