GOLAU - PowerPoint PPT Presentation

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GOLAU

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Bydd mwydyn sy'n byw mewn ogofau tywyll yn rhoi golau o'i gynffon. ... ac felly caiff neges mewn c d ei darllen. troell. 40. 40. Sioe Laser. Mae ffiseg ym mhob peth ... – PowerPoint PPT presentation

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