OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Cartref a ffrindiau : adnoddau athrawon by Bridie Raban-Bisby. ISBN 0905345991. Published by Uned Iaith Genedlaethol Cymru CBAC in 1995. Publication and catalogue information, links to buy online and reader comments.
