geiriadur mawr =
Subtitle: The complete Welsh-English, English-Welsh dictionary
By: [by] H. Meurig Evans, W.O. Thomas; golygydd ymgynghorol (consulting editor), Stephen J. Williams.
Contributors: Thomas, W. O.; Williams, Stephen J. 1896-
Edition: 7th ed.
Publisher: C. Davies; Gwasg Gomer
Published: 1976
Place of publication: Abertawe [Swansea]; Llandysul
Language: mul
Notes: Previous ed., 1975.