Tro ar fyd
Subtitle: pecyn cyfeirio.
Contributors: Gwynedd (Wales). Education Department.
Series: Project Treftadaeth a Diwylliant (9-11) Awdurdod Addysg Gwynedd (dan nawdd y Swyddfa Gymreig) 1985-1987
Publisher: Awdurdod Addysg Gwynedd
Published: 1987
Place of publication: Caernarfon
Language: wel
Number of pages: 86
Notes: Bibliography: pp.84-86.