Teitl clawr = Cover title.
Perfformiad cymharol bechgyn a merched yn yr ysgol yng Nghymru : gofyn cwestiynau, cael atebion = The comparative performance of boys and girls at school in Wales : asking questions, getting answers. ISBN 1861122020. Published by Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru in 1999. Publication and catalogue information, links to buy online and reader comments.