Classification
Q - Science
82
R - Medicine
64
D - World History
28
B - Philosophy, Psychology, Religion
18
Z - Library Science
17
H - Social Science
14
P - Language and Literature
12
T - Technology
12
G - Geography, Anthropology, Recreation
10
A - General Works
9
V - Naval Science
8
F - General American History
7
C - Historical Sciences
6
S - Agriculture
5
K - Law
1
L - Education
1
M - Music
1
N - Fine Arts
1
U - Military Science
1