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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6425287
    Disgrifiad
    Digital photo survey of Porthmadog Signal Box, FR/WHR, by Brian Malaws on 19 July 2013.
    Enw Casgliad
    Investigators' Digital Photography
    Cyfrwng
    One image. Photo.
    Cychwynnwr
    Mr Brian A. Malaws, RCAHMW
    Dyddiad
    2013-07-19