1
by Skirl, Stefan, Schwalb, Ulrich
Published 1995
Gabler Verlag

2
by Adriani, Brigitte, Schwalb, Ulrich, Wetz, Rainer
Published 2000
Gabler Verlag

3
by Skirl, Stefan
Published 1994
Gabler Verlag
Other Authors: '; ...Schwalb, Ulrich...