Y geiriadur mawr =
Subtitle: The complete Welsh-English, English-Welsh dictionary
By: H. Meurig Evans, W.O. Thomas ; golygydd ymgynghorol (consulting editor): Stephen J. Williams.
Contributors: Williams, Stephen J. 1948-; Thomas, W. O.
Edition: 11th ed. --
Publisher: C. Davies; Gwasg Gomer; Christopher Davies Publishers Ltd
Published: 1983
Place of publication: Abertawe [Swansea, Wales]; Llandysul
Language: wel; eng
Number of pages: 492
Subjects: Welsh language -- Dictionaries -- English; English language -- Dictionaries -- Welsh
Other titles: The complete Welsh-English, English-Welsh dictionary