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: Thomas, W. O.; Williams, Stephen J. 1896-1992.
Edition: 15eg arg.
Publisher: Christopher Davies; Gwasg Gomer
Published: 2001
Place of publication: Llandybie
Language: eng
Number of pages: 367
Subjects: Welsh language -- Dictionaries -- English.; English language -- Dictionaries -- Welsh.
Genres: Dictionaries
Other titles: Complete Welsh-English, English-Welsh dictionary.
Notes: Argraffiad cyntaf = First published: 1958.