1
Published 1988
Book
2
Published in Geschichte Schlesiens (1988)
Book
3
by Petry, Ludwig
Published in Schlesien (1961)
Article
4
by Petry, Ludwig
Published in Schlesien (1972)
Article
5
by Petry, Ludwig
Published in Schlesien (1966)
Article
6
by Petry, Ludwig
Published in Schlesien (1981)
Article
7
Article
8
Published in Geschichte Schlesiens (1988)
Book
10
14
by Petry, Ludwig
Published 1973
Book
15
by Petry, Ludwig
Published 1938
Book
16
Book
17
by Petry, Ludwig
Published 1961
Book
18
Article
19
by Petry, Ludwig
Published 1935
Book
20