Klassifikationsnummer
H - Social Science
486
Q - Science
439
R - Medicine
388
T - Technology
195
L - Education
133
P - Language and Literature
126
K - Law
110
B - Philosophy, Psychology, Religion
107
G - Geography, Anthropology, Recreation
83
D - World History
69
S - Agriculture
64
Z - Library Science
49
J - Political Science
48
N - Fine Arts
40
M - Music
35
A - General Works
30
E - United States History
28
F - General American History
28
C - Historical Sciences
14
V - Naval Science
4
U - Military Science
3