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cover image of Lass Sie reden! Tschüss Kommunikations-Stress

Lass Sie reden! Tschüss...

Simone Janson Author
Simone Janson Editor
(2024)

cover image of Gekonnt argumentieren & überzeugen

Gekonnt argumentieren &...

Simone Janson Author
Simone Janson Editor
(2024)

cover image of Self Lobbying

Self Lobbying

Simone Janson Author
Simone Janson Editor
(2024)