12:31Galwad Eto09/04/2014BBC Radio Cymru Duration: 29 o funudau Wed 9th Apr 2014, 12:31 on BBC Radio CymruCyfle i glywed rhai o bigion 'Galwad Cynnar' eto. Highlights from Galwad Cynnar.GenresFactualScience & NatureBrandGalwad Eto Source: BBC Online