Classification
P - Language and Literature
125
H - Social Science
58
D - World History
52
Q - Science
34
R - Medicine
32
K - Law
18
S - Agriculture
15
G - Geography, Anthropology, Recreation
12
J - Political Science
11
N - Fine Arts
11
B - Philosophy, Psychology, Religion
9
U - Military Science
6
M - Music
4
L - Education
3
T - Technology
3
Z - Library Science
3
A - General Works
1
C - Historical Sciences
1
V - Naval Science
1