Klassifikationsnummer
Q - Science
197
S - Agriculture
118
T - Technology
106
H - Social Science
62
G - Geography, Anthropology, Recreation
14
R - Medicine
12
B - Philosophy, Psychology, Religion
11
Z - Library Science
11
L - Education
4
K - Law
3
J - Political Science
2
C - Historical Sciences
1
D - World History
1
N - Fine Arts
1
P - Language and Literature
1