Klassifikationsnummer
D - World History
46
N - Fine Arts
23
P - Language and Literature
19
H - Social Science
9
B - Philosophy, Psychology, Religion
7
G - Geography, Anthropology, Recreation
3
J - Political Science
3
Z - Library Science
3
A - General Works
2
C - Historical Sciences
2
K - Law
2
L - Education
1
M - Music
1
R - Medicine
1
S - Agriculture
1
V - Naval Science
1