Klassifikationsnummer
H - Social Science
466
F - General American History
48
D - World History
30
J - Political Science
29
E - United States History
5
K - Law
3
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
M - Music
1
N - Fine Arts
1
P - Language and Literature
1
Q - Science
1
S - Agriculture
1
T - Technology
1