1
Published 1984
Book
2
Published 1983
Book
3
Published 1980
Book
5
Book
6
by Gauerke, Erno
Published 1986
Book
7
Published in Die Volksgruppen Südwestafrikas (1978)
Book
8
Published in Die Volksgruppen Südwestafrikas (1980)
Book
9
Published 1981
Book
10
Published 1978
Book
11
by Bertelsmann, Werner
Published 1979
Book
12
Published 1961
Book
14
Serial
15
Serial