12:31Galwad Eto11/03/2015BBC Radio Cymru Duration: 29 o funudau Wed 11th Mar 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