Klassifikationsnummer
L - Education
516
Q - Science
44
P - Language and Literature
39
G - Geography, Anthropology, Recreation
36
H - Social Science
20
R - Medicine
10
B - Philosophy, Psychology, Religion
7
M - Music
7
N - Fine Arts
5
K - Law
4
T - Technology
4
D - World History
3
F - General American History
3
J - Political Science
3
A - General Works
1
Z - Library Science
1