18:03Galwad Eto16/04/2012BBC Radio Cymru Duration: 27 o funudau Mon 16th Apr 2012, 18:03 on BBC Radio CymruCyfle i glywed rhai o bigion 'Galwad Cynnar' eto. Highlights from Galwad Cynnar.GenresFactualScience & NatureBrandGalwad Eto Source: BBC Online