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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6008525
    Disgrifiad
    Bonvilston Ring, Bonvilston; plan by Jack Spurgeon and Howard Thomas, surveyed and drawn October 1980.
    Enw Casgliad
    Additional Information
    Cyfrwng
    Graphic.
    Cychwynnwr
    Mr C. Jack Spurgeon, Howard J. Thomas
    Dyddiad
    1980-10