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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.
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鈥橠yw鈥檙 rhaglen yma ddim ar gael ar 主播大秀 iPlayer ar hyn o bryd
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