'Darlith a draddodwyd yn Ysgol Uwchradd Botwnnog, Mawrth 20fed, 1986'.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Sŵn y môr by J. Ifor Davies. ISBN 0904852539. Published by Gwasanaeth Llyfrgell Gwynedd in 1986. Publication and catalogue information, links to buy online and reader comments.
