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Mythos Unternehmer by Matthias Aumann Nicht Schulklug Sondern Strassenschlau by Matthias Aumann How to Marktführer by Matthias Aumann Zustandsangst im Fahrtensegeln by Matthias Aumann Segeln in der Schule! Planung, Durchführung und Evaluation ei... by Matthias Aumann Unternehmertum ist eine Haltung by Matthias Aumann Vermögensaufbau für Durchstarter by Steffen Kriese Ideengenerierung mit KI by Christian Czarnecki


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