Classification
P - Language and Literature
242
Q - Science
97
H - Social Science
96
D - World History
47
G - Geography, Anthropology, Recreation
24
R - Medicine
20
L - Education
19
S - Agriculture
18
K - Law
16
B - Philosophy, Psychology, Religion
13
J - Political Science
13
T - Technology
11
A - General Works
9
N - Fine Arts
7
U - Military Science
3
M - Music
2
Z - Library Science
2
C - Historical Sciences
1