Classification
H - Social Science
100
S - Agriculture
83
D - World History
82
Q - Science
75
T - Technology
70
P - Language and Literature
40
L - Education
20
A - General Works
18
Z - Library Science
17
C - Historical Sciences
16
G - Geography, Anthropology, Recreation
15
F - General American History
11
K - Law
9
M - Music
9
R - Medicine
9
J - Political Science
7
N - Fine Arts
7
U - Military Science
7
B - Philosophy, Psychology, Religion
6
V - Naval Science
2
E - United States History
1