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CHNB Aegerten Ruine am Gurten bei Bern Collection Gugelmann GSGUGELAFONDC.tif Information Creator Simon Daniel Lafond Creator Bernhard Albrecht Haller Ruine der Burg Aegerten am Gurten bei Bern Gde Kniz Lithographie koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGELAFONDC helveticarchives