Klassifikationsnummer
L - Education
713
H - Social Science
78
P - Language and Literature
50
K - Law
45
R - Medicine
41
J - Political Science
29
T - Technology
26
B - Philosophy, Psychology, Religion
21
D - World History
19
F - General American History
19
N - Fine Arts
19
Q - Science
17
C - Historical Sciences
5
G - Geography, Anthropology, Recreation
4
Z - Library Science
4
S - Agriculture
3
U - Military Science
3
E - United States History
1
M - Music
1