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- Language: German
- Year: 2007

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- Language: German
- Year: 2006

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- Language: German
- Year: 2014

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- Language: German
- Year: 2018

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- Language: German
- Year: 2008

Die Europäische Union in Umweltschutzregimen staatsfreier Räume: Weltraum, Hohe See und Antarktis
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- Language: German
- Year: 2017