1
Published 1970
Record Source: Published Materials
Book
2
Author: Mack, Rüdiger.
Published 1989
Record Source: Published Materials
Book
5
6
Record Source: Published Materials
Book
8
Published 1932
Record Source: Published Materials
Book
9
11
12
13
16
Author: Heffner, John H.
Published 1995
Record Source: Published Materials
Book
17
Published 2001
Record Source: Published Materials
Book
18
Published 1981
Record Source: Published Materials
Microfilm
19