Teitl clawr = Cover title.
Defnyddio e-bost. Uned 2, Cyfleu a thrin gwybodaeth : uned o waith sy'n cefnogi dysgu, addysgu ac asesu disgyblion wrth iddynt ddefnyddio e-bost. ISBN 1861124252. Published by Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru in 2002. Publication and catalogue information, links to buy online and reader comments.