Classification
H - Social Science
100
B - Philosophy, Psychology, Religion
57
T - Technology
40
R - Medicine
18
S - Agriculture
9
P - Language and Literature
8
Q - Science
7
D - World History
6
A - General Works
4
F - General American History
4
C - Historical Sciences
3
M - Music
1
N - Fine Arts
1
U - Military Science
1
Z - Library Science
1