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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6438524
    Disgrifiad
    Colour slides showing sites and buildings in Dr Harrison's classification "Iron & Steel - 10270".
    Enw Casgliad
    DMHC - Dr Michael Harrison Collection
    Cyfrwng
    20 slides. Photo.
    Cychwynnwr
    Dr Michael Harrison
    Dyddiad
    1988 to 1991