Y geiriadur mawr : the complete Welsh-English, English-Welsh dictionary
By: H. Meurig Evans, W. O. Thomas ; golygydd ymgynghorol (consulting editor) , Stephen J. Williams.
Contributors: Thomas, W. O.
Edition: [New ed.]
Publisher: Lylfrau'r Dryw
Published: 1960
Place of publication: Llandybie
Language: wel
Number of pages: 476
Subjects: Welsh language -- Dictionaries -- English.; English language -- Dictionaries -- Welsh.