CLASSIFICATION
H - Social Science
4,396
L - Education
1,491
S - Agriculture
197
G - Geography, Anthropology, Recreation
186
T - Technology
130
J - Political Science
124
K - Law
113
R - Medicine
85
P - Language and Literature
81
Q - Science
70
D - World History
41
N - Fine Arts
35
B - Philosophy, Psychology, Religion
23
M - Music
22
Z - Library Science
10
U - Military Science
7
V - Naval Science
6
E - United States History
5
A - General Works
4
C - Historical Sciences
3
F - General American History
2