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CHNB Thun Umgebung Schadau von Nordosten Collection Gugelmann GSGUGEWOLF.tif Information Creator Johann Wolfgang Kleemann Creator Rudolf Samuel Henzi Thun Umgebung Schadau von Nordosten Thun Farbkupferstich Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEWOLF helveticarchives ch aspx ID