I nodi deugain mlwyddiant Radio Cymru yn 2017, dyma bennod o Tomos a Marged o 1992. A 1992 episode of Tomos a Marged to mark Radio Cymru's fortieth anniversary in 2017. Show more
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I nodi deugain mlwyddiant Radio Cymru yn 2017, dyma bennod o Tomos a Marged o 1992. A 1992 episode of Tomos a Marged to mark Radio Cymru's fortieth anniversary in 2017. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
