Classification
Q - Science
107
T - Technology
91
H - Social Science
83
M - Music
63
S - Agriculture
63
R - Medicine
58
A - General Works
32
D - World History
26
B - Philosophy, Psychology, Religion
25
J - Political Science
15
Z - Library Science
15
K - Law
14
F - General American History
8
G - Geography, Anthropology, Recreation
7
P - Language and Literature
5
C - Historical Sciences
4
L - Education
4
N - Fine Arts
4
V - Naval Science
3
E - United States History
1