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CHNB Braubach und Marksburg von Sdosten Rhein abwrts Collection Gugelmann GSGUGEBLEULERb.tif Information Creator Johann Ludwig Bleuler Braubach und Marksburg von Sdosten Rhein abwrts Braubach Aquatinta koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEBLEULERb helveticarchives