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CHNB Gurnigel Schwarzbrnnli Collection Gugelmann GSGUGEWEIBELB.tif Information Gurnigel Schwarzbrnnli Das Schwarzbrnnli auf dem Gurnigel Gurnigel Aquarell Federzeichnung Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEWEIBELB helveticarchives ch aspx ID helveticarchives ch Swiss National