Classification
Q - Science
20
K - Law
19
R - Medicine
18
H - Social Science
7
T - Technology
6
Z - Library Science
6
B - Philosophy, Psychology, Religion
3
D - World History
3
E - United States History
3
G - Geography, Anthropology, Recreation
3
N - Fine Arts
2
A - General Works
1
L - Education
1
M - Music
1
P - Language and Literature
1
S - Agriculture
1
U - Military Science
1