Klassifikationsnummer
H - Social Science
463
T - Technology
191
Q - Science
147
R - Medicine
101
L - Education
93
D - World History
65
P - Language and Literature
45
K - Law
41
G - Geography, Anthropology, Recreation
35
B - Philosophy, Psychology, Religion
34
S - Agriculture
32
J - Political Science
30
A - General Works
21
F - General American History
18
Z - Library Science
15
N - Fine Arts
13
E - United States History
11
U - Military Science
8
V - Naval Science
5
C - Historical Sciences
3
M - Music
2