CD-ROM mewn amlen tu fewn y clawr blaen = CD-ROM in pocket attached to inside front cover.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Darllen mewn dim. Cyfrol 1, Pecyn athrawon by Anwen Owen. ISBN 0862438446. Published by Y Lolfa in 2006. Publication and catalogue information, links to buy online and reader comments.
