12:31Galwad Eto12/08/2015BBC Radio Cymru Duration: 29 o funudau Wed 12th Aug 2015, 12:31 on BBC Radio CymruCyfle i glywed rhai o bigion 'Galwad Cynnar' eto. Highlights from Galwad Cynnar.GenresFactualScience & NatureBrandGalwad Eto Source: BBC Online