1
2
Published: Weinheim : Beltz, 1974
Serial
3
4
5
Article
6
Published: Hamburg : Ergebnisse Verlag, 1991
Serial
7
Published: Weinheim : Beltz, 1978
Serial
8
9
Article
10
Published: Neuendettelsau : Freimund Verlag, 1981
Serial
11
Published: Weinheim : Beltz, 1980
Serial
12
Published: Weinheim : Beltz, 1980
Serial
13
Article
14
Published: Essen : Sutter, 1981
Serial
15
16
Article
17
Article
18
Book
19
Published: Berlin [u.a.] : Argument-Verl, 1998
Book
20
Book