1
Published: New York : Holt, 1995
Book
2
3
Book
4
Published: Köln : Pahl-Rugenstein, 1985
Book
5
Published: Köln : Bund-Verl, 1983
Book
6
Published: Mönchengladbach : Vive-le-Gues-Verl, ca. 1983
Book
7
Published: Köln : Bund-Verl, 1980
Book
8
9
Book
10