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Are you Katja Roth, author of the books below?
Das MOSAIKprinzip by Katja Roth Filmrechte in der Insolvenz by Roth, Katja by Unknown Author Visuelles Wissen. Mathematik. by Katja Roth Help Your Kids with Math by Carol Vorderman Wissen - Üben - Testen by Lutz Schreiner


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