CLASSIFICATION
Q - Science
27,652
T - Technology
1,681
R - Medicine
489
H - Social Science
407
S - Agriculture
362
G - Geography, Anthropology, Recreation
251
Z - Library Science
245
P - Language and Literature
41
B - Philosophy, Psychology, Religion
39
L - Education
39
A - General Works
29
K - Law
21
D - World History
18
J - Political Science
16
C - Historical Sciences
13
N - Fine Arts
6
U - Military Science
5
M - Music
3
E - United States History
1
F - General American History
1
V - Naval Science
1