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Duisburg Pumpwerk Alte Emscher Bilder PumpwerkAlteEmscher AnsichtVonNordosten Jun. Pumpwerk Alte Emscher Ansicht von Nordosten selfphotographed Bernd Wiebus Public Domain Bernd Wiebus de Original upload log de Wdwdbot CommonsHelper de Duisburg CPumpwerkAlteEmscher CBilderPumpwerkAlteEmscherAnsichtVonNordostenJun Bernd Wiebus