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  <dc:title>Hanes gwaith copr Drws-y-coed; hanes Catrin Jones; hanes Richard Farrington, curad Llanwnda a goruchwiliwr gwaith Drws-y-coed; rhagor o hanes gwaith copr Drws-y-coed; gwaith copr Mynydd Parys; gwaith copr Mynydd Parys; gwaith copr Simdda Dylluan; cludo copr o Ddrws-y-coed; 'patents'; 'tinion tuniau'; hanes twll coch Chwarel Dorothea; corn Chwarel Dorothea.</dc:title>
  <dc:description></dc:description>
  <dc:date>d.d.</dc:date>
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