18:03Galwad Eto17/07/2012BBC Radio Cymru Duration: 27 o funudau Tue 17th Jul 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