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Weekly Report of 18 November 2009 Franziska Holz (Copyright)  gaspipeline Energy Olbernhau

Methane - a neglected
greenhouse gas Titel des Themas

Weekly Report of 17 September 2009 Tobias Machhaus (Copyright)  Solar Solarenergie Sonnenenergie

Power from the Deserts: Not a Mirage Titel des Themas

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