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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6148612
    Disgrifiad
    RCAHMW colour slide oblique aerial photograph of Porth-gain Slate Quarries, Llanrhian, taken on 24/03/1991 by CR Musson
    Enw Casgliad
    RCAHMW Colour Oblique Aerial Photographs
    Cyfrwng
    Photo.
    Cychwynnwr
    Musson, RCAHMW
    Dyddiad
    1991-03-24