gan
Maldwyn Pryse
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Yr Athro Gareth Wyn Jones ‘Y Gwir yn Erbyn y Byd’
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Hwyl, sbri a datrys problemau yn y pentre Gwyddoniaeth a Thechnoleg
Yr Athro Gareth Wyn Jones ‘Y Gwir yn Erbyn y Byd’
Hwyl, sbri a datrys problemau yn y pentre Gwyddoniaeth a Thechnoleg