Klassifikationsnummer
H - Social Science
415
P - Language and Literature
291
J - Political Science
228
F - General American History
219
L - Education
137
N - Fine Arts
89
G - Geography, Anthropology, Recreation
63
B - Philosophy, Psychology, Religion
50
M - Music
34
R - Medicine
33
E - United States History
29
Q - Science
23
K - Law
22
D - World History
21
T - Technology
12
Z - Library Science
9
U - Military Science
8
A - General Works
6
C - Historical Sciences
6
S - Agriculture
2