Classification
P - Language and Literature
11 721
H - Social Science
2 159
B - Philosophy, Psychology, Religion
2 144
A - General Works
1 664
D - World History
1 550
M - Music
1 503
S - Agriculture
1 087
Q - Science
922
F - General American History
738
T - Technology
696
C - Historical Sciences
565
R - Medicine
476
E - United States History
416
J - Political Science
340
L - Education
331
K - Law
298
N - Fine Arts
261
Z - Library Science
226
G - Geography, Anthropology, Recreation
207
U - Military Science
37
V - Naval Science
21