Sgwrs gyda Gareth Wyn Griffiths, awdurdod byd ar ficrobioleg ym Mhrifysgol Oslo. Gari chats with Gareth Wyn Griffiths, a world-leading microbiologist at Oslo University.
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Sgwrs gyda Gareth Wyn Griffiths, awdurdod byd ar ficrobioleg ym Mhrifysgol Oslo. Gari chats with Gareth Wyn Griffiths, a world-leading microbiologist at Oslo University.
Ail wasanaeth BBC Radio Cymru sy'n cynnig sioe frecwast bob bore'r wythnos.
