Classification
R - Medicine
253
T - Technology
137
P - Language and Literature
84
Q - Science
78
S - Agriculture
55
H - Social Science
48
M - Music
38
B - Philosophy, Psychology, Religion
24
G - Geography, Anthropology, Recreation
14
A - General Works
11
N - Fine Arts
10
C - Historical Sciences
7
D - World History
7
E - United States History
6
K - Law
5
J - Political Science
1
L - Education
1