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- Language: German
- Year: 2011
- Author: Matthias Becher, Katharina Gahbler
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- Year: 2023
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- Language: German
- Year: 2011
- Author: Matthias Becher, Hendrik Hess
- Language: German
- Year: 2019
- Author: Matthias Becher, Stephan Conermann, Linda Dohmen
- Language: German
- Year: 2018
- Author: Matthias Becher, Achim Fischelmanns, Katharina Gahbler
- Language: German
- Year: 2021
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- Language: German
- Year: 2019
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- Language: German
- Year: 2019
Karl der Große
epub
- Author: Matthias Becher
- Language: German
- Year: 2014