CLASSIFICATION
H - Social Science
4,957
L - Education
611
S - Agriculture
268
G - Geography, Anthropology, Recreation
187
T - Technology
155
J - Political Science
151
K - Law
119
R - Medicine
117
P - Language and Literature
99
Q - Science
97
D - World History
50
N - Fine Arts
39
B - Philosophy, Psychology, Religion
24
M - Music
20
Z - Library Science
15
U - Military Science
13
A - General Works
4
E - United States History
4
C - Historical Sciences
3
F - General American History
3