Klassifikationsnummer
F - General American History
30
H - Social Science
27
D - World History
25
P - Language and Literature
19
B - Philosophy, Psychology, Religion
15
G - Geography, Anthropology, Recreation
13
L - Education
10
K - Law
7
N - Fine Arts
7
J - Political Science
3
U - Military Science
3
M - Music
2
R - Medicine
2
A - General Works
1
C - Historical Sciences
1
E - United States History
1
Q - Science
1
S - Agriculture
1
T - Technology
1
Z - Library Science
1