CLASSIFICATION
H - Social Science
170,203
P - Language and Literature
94,897
Q - Science
81,529
D - World History
48,156
T - Technology
44,018
L - Education
37,738
R - Medicine
36,403
B - Philosophy, Psychology, Religion
34,499
J - Political Science
23,546
G - Geography, Anthropology, Recreation
22,412
N - Fine Arts
22,034
K - Law
21,692
M - Music
12,806
F - General American History
11,389
Z - Library Science
10,324
S - Agriculture
9,419
E - United States History
6,980
C - Historical Sciences
6,350
U - Military Science
2,005
A - General Works
1,966
V - Naval Science
396