1
2
3
Book
4
5
6
Published: Köln : Bund-Verl, 1984.
Book
7
8
9
10
11
Published: Köln : Pahl-Rugenstein, 1987.
Book
12
Published: Köln : PapyRossa-Verl, 2004.
Book
13
Published: München : Dt. Verl.-Anst, 2004.
Book
14
15
16
Published: Berlin : Akad.-Verl, 1989.
Book
17
18
Published: Frankfurt am Main : Nexus, 1991.
Book
19
20