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CHNB Meiringen prise de la descente le Zwirgi Collection Gugelmann GSGUGEWEIBELF.tif Information Meiringen prise de la descente le Zwirgi Meiringen Aquatinta koloriert CHNB Meiringen prise de la descente le Zwirgi Collection Gugelmann GSGUGEWEIBELF tif Swiss National Library CHNBCollection Gugelmann PDold User Swiss National