1
Published: Weinheim : Beltz, 1974
Serial
2
3
4
Article
5
Published: Hamburg : Ergebnisse Verlag, 1991
Serial
6
Published: Weinheim : Beltz, 1978
Serial
7
8
Article
9
Published: Neuendettelsau : Freimund Verlag, 1981
Serial
10
Published: Weinheim : Beltz, 1980
Serial
11
Published: Weinheim : Beltz, 1980
Serial
12
Article
13
Published: Essen : Sutter, 1981
Serial
14
15
Article
16
Article
17
Published: Berlin : Links, 2008
Book
18
Book
19
Published: Berlin : Lit-Verl, 2007
Book
20
Book