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CHNB Fribourg von Sdosten Collection Gugelmann GSGUGEMECHELB.tif Information Creator Christian von Mechel Fribourg von Sdosten Fribourg Umrissradierung koloriert File CHNB Fribourg von Sdosten Collection Gugelmann GSGUGEMECHELB tif Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEMECHELB