Classification
S - Agriculture
246
Q - Science
207
R - Medicine
185
P - Language and Literature
156
B - Philosophy, Psychology, Religion
81
D - World History
79
M - Music
74
A - General Works
57
H - Social Science
38
C - Historical Sciences
32
E - United States History
17
F - General American History
9
T - Technology
8
G - Geography, Anthropology, Recreation
7
K - Law
1
N - Fine Arts
1
U - Military Science
1
Z - Library Science
1