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- Language: German
- Year: 2016
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- Author: Ulrich Dangel
- Language: German
- Year: 2009
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- Author: Ulrich Dangel
- Language: English
- Year: 2009
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- Author: Ulrich Dangel
- Language: English
- Year: 2016
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- Author: Ulrich Dangel
- Language: English
- Year: 2016
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- Language: English
- Year: 2010
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- Language: German
- Year: 2010
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- Author: Ulrich Dangel (auth.)
- Language: English
- Year: 2010
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- Author: Ulrich Dangel
- Language: German
- Year: 2010