Classification
Q - Science
890
R - Medicine
75
B - Philosophy, Psychology, Religion
55
T - Technology
40
A - General Works
31
P - Language and Literature
20
L - Education
19
S - Agriculture
17
C - Historical Sciences
13
H - Social Science
8
D - World History
7
M - Music
7
E - United States History
6
F - General American History
5
G - Geography, Anthropology, Recreation
4
Z - Library Science
3