1
2
3
4
5
6
Book
7
Published: Düsseldorf : Droste, 1987.
Book
8
9
10
11
12
13
Book
14
15
Published: Berlin : LitPol-Verl.-Ges, 1985.
Book
16
Book
17
18
Book
19
Published: Berlin : Akademie-Verlag, 1995.
Book
20