CLASSIFICATION
H - Social Science
49,965
L - Education
6,488
D - World History
1,215
Q - Science
1,034
J - Political Science
993
S - Agriculture
941
R - Medicine
940
T - Technology
934
F - General American History
779
K - Law
709
Z - Library Science
419
G - Geography, Anthropology, Recreation
288
P - Language and Literature
189
E - United States History
179
B - Philosophy, Psychology, Religion
154
A - General Works
130
U - Military Science
105
C - Historical Sciences
67
N - Fine Arts
32
V - Naval Science
10
M - Music
3