Klassifikationsnummer
H - Social Science
27
J - Political Science
24
F - General American History
18
K - Law
18
P - Language and Literature
12
L - Education
11
G - Geography, Anthropology, Recreation
9
B - Philosophy, Psychology, Religion
4
N - Fine Arts
4
S - Agriculture
2
A - General Works
1
R - Medicine
1
T - Technology
1