Allwedd mathemateg 8 /
Harvey, Roma.
Kervegant, Ffion.
Aberystwyth : Y Ganolfan Astudiaethau Addysg,
2002.
Addasiad Cymraeg gan = Welsh adaptation by : Ffion E. Kervegant.
Argraffiad Saesneg gwreiddiol = Original English edition : Cheltenham : Stanley Thornes, 1999.
Mathematics