Dulliau mathemategol : modwl P1 /
Thomas, H.
Cymen.
[Caerdydd] : Cyd-Bwyllgor Addysg Cymru,
1997.
Arg. Saesneg gwreiddiol = Original English ed.: [S.l.]: RND Publications, 1997.
Cyhoeddwyd dan nawdd Cynllun Adnoddau Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Resources Project.
Addasiad Cymraeg gan = Welsh adaptation by: Cymen Cyf.
Mathematics