Classification
H - Social Science
84
L - Education
12
M - Music
9
D - World History
7
J - Political Science
7
K - Law
7
S - Agriculture
6
T - Technology
6
G - Geography, Anthropology, Recreation
5
Q - Science
5
Z - Library Science
5
R - Medicine
4
C - Historical Sciences
3
N - Fine Arts
3
B - Philosophy, Psychology, Religion
1
P - Language and Literature
1