Cover image not available
Cyhoeddir hefyd yn Saesneg = Also published in English.
Lluniwyd y llyfryn hwn yn y Ganolfan Astudiaethau Iaith, Llangefni, gan Swyddog y Prosiect Mathemateg, Carol Jenkins, gyda chydweithrediad a chymorth aelodau Pwyllgor Ymgynghorol Mathemateg CAI.
This booklet was prepared in the Language Studies Centre, Llangefni, by the Mathematics Project Officer, Carol Jenkins, with the co-operation and assistance of the members of the Centre's Mathematics Advisory Committee.
Teitl clawr = Cover title.
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Yr Ysgol. ISBN 185787143X. Published by Canolfan Astudiaethau Iaith in 1995. Publication and catalogue information, links to buy online and reader comments.