Classification
T - Technology
62
Q - Science
56
R - Medicine
40
S - Agriculture
23
A - General Works
14
D - World History
12
Z - Library Science
11
H - Social Science
9
G - Geography, Anthropology, Recreation
8
P - Language and Literature
8
K - Law
5
M - Music
5
B - Philosophy, Psychology, Religion
3
N - Fine Arts
3
L - Education
2
J - Political Science
1
U - Military Science
1