Classification
P - Language and Literature
43,966
M - Music
43,563
A - General Works
5,976
F - General American History
5,302
B - Philosophy, Psychology, Religion
5,048
D - World History
3,889
H - Social Science
3,568
Q - Science
2,511
K - Law
2,503
R - Medicine
2,484
C - Historical Sciences
1,951
E - United States History
1,839
S - Agriculture
1,755
T - Technology
1,533
N - Fine Arts
1,361
J - Political Science
859
L - Education
582
Z - Library Science
537
G - Geography, Anthropology, Recreation
468
U - Military Science
116
V - Naval Science
27