Classification
P - Language and Literature
16,087
H - Social Science
162
K - Law
122
B - Philosophy, Psychology, Religion
109
D - World History
82
Q - Science
68
N - Fine Arts
57
L - Education
55
R - Medicine
34
J - Political Science
32
G - Geography, Anthropology, Recreation
19
M - Music
18
S - Agriculture
10
T - Technology
10
F - General American History
8
E - United States History
7
U - Military Science
4
A - General Works
3
C - Historical Sciences
3
Z - Library Science
3
V - Naval Science
1