CLASSIFICATION
H - Social Science
170,227
P - Language and Literature
94,914
Q - Science
81,541
D - World History
48,160
T - Technology
44,025
L - Education
37,744
R - Medicine
36,410
B - Philosophy, Psychology, Religion
34,543
J - Political Science
23,566
G - Geography, Anthropology, Recreation
22,424
N - Fine Arts
22,041
K - Law
21,695
M - Music
12,806
F - General American History
11,390
Z - Library Science
10,326
S - Agriculture
9,421
E - United States History
6,981
C - Historical Sciences
6,351
U - Military Science
2,005
A - General Works
1,967
V - Naval Science
396