- Author: Maiken Umbach (editor), Bernd Hüppauf (editor)
- Language: English
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- Language: German
- Year: 2015
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- Language: English
- Year: 1997
- Author: Andreas Gardt (editor), Bernd Hüppauf (editor)
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- Year: 2004
- Author: Robert Prutz (editor), Bernd Hüppauf (editor)
- Language: German
- Year: 1973