- Author: Axel Harneit-Sievers (editor)
- Language: German
- Year: 2001
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- Language: German
- Year: 2001
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- Language: German
- Year: 1999
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- Language: German
- Year: 1997
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- Year: 1998
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- Year: 1996
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- Language: German
- Year: 1997
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- Year: 1995
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- Year: 1994
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- Language: English
- Year: 2003