Resolving Deep-Rooted ConflictsHerbert C. Kelman, Werner Wintersteiner, Wilfried Graf · First published 2016Open the Tome
Theory and Practice of Conflict Resolution and Interactive Problem-SolvingHerbert C. Kelman, Werner Wintersteiner, Wilfried Graf · First published 2016Open the Tome
Der Jülich-Klevische Erbstreit 1609Manfred Groten, Looz-Corswarem, Clemens Graf von, Wilfried Reininghaus, Manuel Hagemann · First published 2011Open the Tome
Ausweis Sonstiger Finanzieller Verpflichtungen Im JahresabschluWilfried Graf · First published 2001Open the Tome
