geiriadur mawr
Subtitle: The complete Welsh-English, English-Welsh dictionary
By: [compiled by] H. Meurig Evans, W. 0. Thomas ; golygydd ymgynghorol: Stephen J. Williams.
Contributors: Thomas, W. O.; Williams, Stephen J. 1896-
Edition: 4th ed.
Publisher: Gwasg Gomer
Published: 1968
Place of publication: Llandysul
Language: eng
Number of pages: 492
Notes: Previous ed., 1963.