Y geiriadur mawr : the complete Welsh-English, English-Welsh dictionary / H. Meurig Evans, W. O. Thomas ; golygydd ymgynghorol (consulting editor) Stephen, J. Williams. 5. argraffiad-ar-ddeg.
Y geiriadur mawr : the complete Welsh-English, English-Welsh dictionary / H. Meurig Evans, W. O. Thomas ; golygydd ymgynghorol (consulting editor) Stephen, J. Williams.