Classification
P - Language and Literature
541
H - Social Science
336
K - Law
145
D - World History
113
M - Music
96
F - General American History
77
B - Philosophy, Psychology, Religion
65
J - Political Science
58
L - Education
55
Q - Science
55
S - Agriculture
50
N - Fine Arts
34
T - Technology
30
R - Medicine
27
A - General Works
23
C - Historical Sciences
16
G - Geography, Anthropology, Recreation
13
Z - Library Science
10
U - Military Science
8
V - Naval Science
2
E - United States History
1