Klassifikationsnummer
H - Social Science
44
F - General American History
33
T - Technology
13
A - General Works
12
B - Philosophy, Psychology, Religion
12
Z - Library Science
12
L - Education
11
R - Medicine
11
J - Political Science
9
G - Geography, Anthropology, Recreation
6
N - Fine Arts
6
E - United States History
5
M - Music
5
K - Law
4
Q - Science
4
P - Language and Literature
2
S - Agriculture
2
C - Historical Sciences
1