Gerallt Pennant a'i westeion yn trafod pynciau'n cynnwys gwiberod a phryfetach pyllau glo. Gerallt Pennant and guests discuss topics including new bug species found at coal mines.
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Gerallt Pennant a'i westeion yn trafod pynciau'n cynnwys gwiberod a phryfetach pyllau glo. Gerallt Pennant and guests discuss topics including new bug species found at coal mines.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
