Klassifikationsnummer
D - World History
612
P - Language and Literature
168
H - Social Science
55
G - Geography, Anthropology, Recreation
53
C - Historical Sciences
30
B - Philosophy, Psychology, Religion
29
N - Fine Arts
22
R - Medicine
16
M - Music
14
K - Law
12
L - Education
12
Q - Science
11
S - Agriculture
11
U - Military Science
11
Z - Library Science
11
T - Technology
9
J - Political Science
8
E - United States History
5
A - General Works
4
F - General American History
1