CLASSIFICATION
L - Education
20,044
H - Social Science
2,799
G - Geography, Anthropology, Recreation
1,433
R - Medicine
1,096
P - Language and Literature
1,080
D - World History
739
B - Philosophy, Psychology, Religion
738
Q - Science
500
Z - Library Science
433
C - Historical Sciences
345
A - General Works
290
T - Technology
287
K - Law
205
E - United States History
155
M - Music
131
S - Agriculture
128
N - Fine Arts
106
J - Political Science
88
V - Naval Science
56
U - Military Science
42
F - General American History
25