Classification
Q - Science
103
H - Social Science
70
S - Agriculture
68
D - World History
51
T - Technology
41
Z - Library Science
33
G - Geography, Anthropology, Recreation
30
P - Language and Literature
16
F - General American History
15
A - General Works
8
N - Fine Arts
8
R - Medicine
8
L - Education
7
B - Philosophy, Psychology, Religion
5
K - Law
5
J - Political Science
4
C - Historical Sciences
3
U - Military Science
2
M - Music
1
V - Naval Science
1