Classification
Q - Science
23
K - Law
17
S - Agriculture
13
H - Social Science
12
J - Political Science
12
R - Medicine
12
A - General Works
8
N - Fine Arts
6
T - Technology
6
D - World History
5
E - United States History
5
P - Language and Literature
5
B - Philosophy, Psychology, Religion
4
F - General American History
4
C - Historical Sciences
3
L - Education
2
M - Music
1
Z - Library Science
1