Author

Hans Vialon

2 books found

Cover of Authentisch Verkaufen

Authentisch Verkaufen

Hans Vialon, Göran Hajek, G_ran Hajek · First published 2008

Cover of Tapfere Helden in der Akquise

Tapfere Helden in der Akquise

Stephan Magnus, Hans Vialon · First published 2006