CLASSIFICATION
H - Social Science
171,800
P - Language and Literature
117,579
Q - Science
81,876
L - Education
78,282
D - World History
57,896
T - Technology
48,956
R - Medicine
36,572
B - Philosophy, Psychology, Religion
35,525
N - Fine Arts
24,758
J - Political Science
24,117
G - Geography, Anthropology, Recreation
23,636
K - Law
22,701
M - Music
20,079
C - Historical Sciences
17,383
F - General American History
12,335
S - Agriculture
11,389
Z - Library Science
10,368
A - General Works
8,500
E - United States History
7,858
V - Naval Science
3,514
U - Military Science
2,091