12:00Dal Pen Rheswm01/03/2018BBC Radio Cymru Duration: 30 o funudau Thu 1st Mar 2018, 12:00 on BBC Radio Cymru 2Sgwrs i geisio rhoi'r byd yn ei le. Conversation to put the world to rights.GenresFactualFormatsDiscussion & TalkBrandDal Pen Rheswm Source: BBC Online