1
Published: Boppard am Rhein : Boldt, 1988
Book
2
3
4
Published: Frankfurt am Main [u.a.] : Lang, 1996
Book
5
6
7
8
Published: Essen : Klartext, 1993
Book
9
10
11
Published: Köln [u.a.] : Böhlau, 2000
Book
12