Gloywi iaith
By: Adran Iaith a Llenyddiaeth Gymraeg Coleg Prifysgol Cymru.
Contributors: University College of Wales (Aberystwyth, Wales). Dept. of Welsh Language and Literature.
Publisher: Gwasg Prifysgol Cymru
Published: 1988
Place of publication: Caerdydd
Language: wel
Subjects: Welsh language -- Composition and exercises.