Tystysgrif lefel mynediad mewn mathemateg : pecyn gweithgareddau ac asesu /
Bright, Sue.
Birkett, Dan.
Pledger, Keith.
Kervegant, Ffion E.
Canolfan Astudiaethau Addysg.
Aberystwyth : Canolfan Astudiaethau Addysg,
2003.
Original English edition published by Harcourt Education, 2001.
Mathematics
General Certificate of Secondary Education