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CHNB Thun Umgebung Schadau und Thunersee von Nordosten Collection Gugelmann GSGUGEJUILLERATC.tif Information Creator Jacques Henri Juillerat Thun Umgebung Schadau und Thunersee von Nordosten Thun Sepia Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEJUILLERATC helveticarchives ch aspx