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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6428189
    Disgrifiad
    NW end of date casting, Aber-Ogwen Iron Bridge, Penrhyn Castle Estate, cast at Penydarren Ironworks, 1824.
    Enw Casgliad
    Investigators' Photographs
    Cyfrwng
    Photo.
    Cychwynnwr
    Stephen R. Hughes
    Dyddiad
    1996-09-01