CLASSIFICATION
H - Social Science
168,684
P - Language and Literature
95,308
L - Education
74,757
Q - Science
74,498
D - World History
53,764
T - Technology
47,436
R - Medicine
33,173
B - Philosophy, Psychology, Religion
32,461
N - Fine Arts
23,968
J - Political Science
23,325
G - Geography, Anthropology, Recreation
22,365
K - Law
21,480
M - Music
17,400
C - Historical Sciences
14,698
Z - Library Science
9,875
S - Agriculture
9,456
F - General American History
8,541
E - United States History
7,632
A - General Works
7,586
V - Naval Science
2,717
U - Military Science
1,983