Classification
R - Medicine
54
A - General Works
52
T - Technology
42
B - Philosophy, Psychology, Religion
41
C - Historical Sciences
32
P - Language and Literature
14
Q - Science
11
D - World History
6
M - Music
6
S - Agriculture
4
G - Geography, Anthropology, Recreation
2
H - Social Science
2
E - United States History
1
L - Education
1