Classification
H - Social Science
14,974
M - Music
10,676
T - Technology
7,480
Q - Science
7,059
R - Medicine
6,363
S - Agriculture
5,913
D - World History
5,319
P - Language and Literature
3,375
A - General Works
3,279
B - Philosophy, Psychology, Religion
2,614
K - Law
2,379
F - General American History
2,377
L - Education
2,264
J - Political Science
1,839
Z - Library Science
1,561
G - Geography, Anthropology, Recreation
1,252
N - Fine Arts
1,240
E - United States History
463
C - Historical Sciences
438
U - Military Science
322
V - Naval Science
133