1
2
Published: Weinheim : Beltz, 1974
Serial
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
Book
17
Published: Berlin [u.a.] : Argument-Verl, 1998
Book
18
Book
19
Book
20
Published: Köln : Bund-Verl, 1984
Book