Klassifikationsnummer
H - Social Science
29
F - General American History
18
K - Law
17
J - Political Science
16
L - Education
10
G - Geography, Anthropology, Recreation
9
P - Language and Literature
6
B - Philosophy, Psychology, Religion
3
N - Fine Arts
3
S - Agriculture
2
A - General Works
1
R - Medicine
1
T - Technology
1