Beti George yn holi rhai o bobl mwyaf diddorol Cymru, heddi Alwen Williams, Pennaeth newydd BT. Beti George interviews some of Wales's most interesting people.
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Beti George yn holi rhai o bobl mwyaf diddorol Cymru, heddi Alwen Williams, Pennaeth newydd BT. Beti George interviews some of Wales's most interesting people.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
