12:31Galwad Eto02/03/2016BBC Radio Cymru Duration: 29 o funudau Wed 2nd Mar 2016, 12:31 on BBC Radio CymruCyfle i glywed rhai o bigion 'Galwad Cynnar' eto. Highlights from Galwad Cynnar.GenresFactualScience & NatureBrandGalwad Eto Source: BBC Online