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CHNB Thunersee und Brienzersee von Sdwesen von Drligen aus Collection Gugelmann GSGUGESPRNGLINB.tif Information Creator Niklaus Sprngli Thunersee und Brienzersee von Sdwesten von Drligen aus Thunersee Umrissradierung koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGESPR NGLINB helveticarchives