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CHNB Lauteraargletscher grosser Steintisch Collection Gugelmann GSGUGEWOLF.tif Information Creator Caspar Wolf Creator JeanFranois Janinet Lauteraargletscher grosser Steintisch Lauteraargletscher Farbkupferstich Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEWOLF helveticarchives ch aspx