CLASSIFICATION
H - Social Science
171,775
P - Language and Literature
117,575
Q - Science
81,843
L - Education
78,245
D - World History
57,886
T - Technology
48,878
R - Medicine
36,570
B - Philosophy, Psychology, Religion
35,510
N - Fine Arts
24,772
J - Political Science
24,117
G - Geography, Anthropology, Recreation
23,631
K - Law
22,698
M - Music
20,079
C - Historical Sciences
17,381
F - General American History
12,335
S - Agriculture
11,387
Z - Library Science
10,363
A - General Works
8,497
E - United States History
7,858
V - Naval Science
3,513
U - Military Science
2,091