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Haearn a Dur
Yr hanesydd Dr Bill Jones sy'n olrhain hanes y diwydiant haearn a dur yng Nghymru. Historian Dr Bill Jones follows the dramatic story of the iron and steel industry in Wales.
Ar iPlayer
鈥橠yw鈥檙 rhaglen yma ddim ar gael ar 大象传媒 iPlayer ar hyn o bryd