CLASSIFICATION
Q - Science
7,264
L - Education
1,494
H - Social Science
537
T - Technology
534
G - Geography, Anthropology, Recreation
333
P - Language and Literature
299
S - Agriculture
298
B - Philosophy, Psychology, Religion
225
R - Medicine
182
D - World History
69
Z - Library Science
53
A - General Works
35
N - Fine Arts
27
K - Law
25
C - Historical Sciences
21
J - Political Science
15
F - General American History
8
E - United States History
7
M - Music
6
V - Naval Science
4
U - Military Science
3