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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6183175
    Disgrifiad
    Pentreffynnon Lock, Tennant Canal; detail drawing showing the hinge of the lower gate, produced by David Leighton, 1977
    Enw Casgliad
    Drawings Collection
    Cyfrwng
    Graphic.
    Cychwynnwr
    David K. Leighton, RCAHMW
    Dyddiad
    1977