Classification
P - Language and Literature
2,782
R - Medicine
1,624
C - Historical Sciences
980
S - Agriculture
610
B - Philosophy, Psychology, Religion
562
A - General Works
411
Q - Science
208
D - World History
153
F - General American History
89
M - Music
75
H - Social Science
43
E - United States History
21
K - Law
10
T - Technology
10
G - Geography, Anthropology, Recreation
3
L - Education
3
N - Fine Arts
2
Z - Library Science
2
U - Military Science
1