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CHNB Andeer Collection Gugelmann GSGUGEBLEULERB.tif Information Creator Johann Ludwig Bleuler Andeer Gouachemalerei Umrissradierung File CHNB Andeer von Sden Collection Gugelmann GSGUGEBLEULERb tif Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEBLEULERB helveticarchives ch aspx ID