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CHNB Thun Teilansicht vom Schloss gegen den See Collection Gugelmann GSGUGEWEIBELF.tif Information Creator Jakob Samuel Weibel Thun Teilansicht vom Schloss gegen den See Thun Aquatinta koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEWEIBELF helveticarchives ch aspx ID helveticarchives