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CHNB Zrich von Norden Collection Gugelmann GSGUGEBIEDERMANNB.tif Information Creator Johann Jakob Biedermann Zrich von Norden Zrich Umrissradierung koloriert File CHNB Zrich von Norden Collection Gugelmann GSGUGEBIEDERMANNA tif Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEBIEDERMANNB