Klassifikationsnummer
D - World History
172
H - Social Science
48
P - Language and Literature
21
J - Political Science
19
C - Historical Sciences
5
R - Medicine
4
E - United States History
3
A - General Works
2
B - Philosophy, Psychology, Religion
2
M - Music
2
N - Fine Arts
2
Q - Science
2
K - Law
1
T - Technology
1
U - Military Science
1