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CHNB Kehl Grenzposten an der Rheinbrcke Blick auf Strassburg Collection Gugelmann GSGUGEBLEULERb.tif Information Creator Johann Ludwig Bleuler Creator Egidius Federle Creator Friedrich Salath Kehl Grenzposten an der Rheinbrcke Blick auf Strassburg Kehl Aquatinta koloriert Swiss National Library CHNBCollection Gugelmann PDold User