Classification
P - Language and Literature
15,809
H - Social Science
153
K - Law
122
B - Philosophy, Psychology, Religion
106
D - World History
82
Q - Science
66
N - Fine Arts
60
L - Education
54
R - Medicine
34
J - Political Science
31
G - Geography, Anthropology, Recreation
19
M - Music
18
S - Agriculture
9
T - Technology
9
F - General American History
7
E - United States History
6
U - Military Science
4
A - General Works
3
C - Historical Sciences
3
Z - Library Science
3
V - Naval Science
1