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CHNB Grindelwald oberer Gletscher mit Wetterhorn und Mettenberg Collection Gugelmann GSGUGEWOLF.tif Information Creator Friedrich Rosenberg Creator CharlesMelchior Descourtis Grindelwald oberer Gletscher mit Wetterhorn und Mettenberg Grindelwald Farbkupferstich Swiss National Library CHNBCollection Gugelmann PDold User Swiss National