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- Language: German
- Year: 1996
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- Language: German
- Year: 1993
- Author: Rohde Christoph
- Language: German
- Year: 2016
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- Language: German
- Year: 1999
- Author: Quin Eckehard
- Language: German
- Year: 1999
- Author: Peters Martin, Schröder Peter
- Language: German
- Year: 2000
- Author: Ooyen Robert Chr. van
- Language: German
- Year: 2003