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CHNB Luzern von Nordwesten Collection Gugelmann GSGUGEANONYMB.tif author Luzern von Nordwesten Ansicht der Stadt Luzern gegen den Rigi Luzern Gouachemalerei Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEANONYMB helveticarchives ch aspx ID helveticarchives ch Swiss National Library