Cite
MLA Citation
Gareth Ffowc Roberts. Cyfri'n Cewri : Hanes Mawrion ein Mathemateg. Caerdydd : Gwasg Prifysgol Cymru, 2020. http://access.bl.uk/ark:/81055/vdc_100105466787.0x000001
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Gareth Ffowc Roberts. Cyfri'n Cewri : Hanes Mawrion ein Mathemateg. Caerdydd : Gwasg Prifysgol Cymru, 2020. http://access.bl.uk/ark:/81055/vdc_100105466787.0x000001