Sgwrs gyda Richard Hughes o Gaernarfon, sy'n gweithio i un o gwmnïau optegol mwya'r byd. Gari chats with Richard Hughes from one of the world's leading optical companies. Show more
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Sgwrs gyda Richard Hughes o Gaernarfon, sy'n gweithio i un o gwmnïau optegol mwya'r byd. Gari chats with Richard Hughes from one of the world's leading optical companies. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
