Mathemateg HBJ
Subtitle: llyfr gweithgareddau Blwyddyn 1: Lle rydym ni'n byw?/Gwlyb a sych
By: Daphne Kerslake ... (et al.) ; addasiad Cymraeg gan Janet Davies.
Contributors: Kerslake, Daphne.; Davies, Janet.
Publisher: Harcourt Brace Jovanovich
Published: 1992
Place of publication: London
Language: wel
Number of pages: 16
Subjects: Mathematics -- Study and teaching -- Activity programs -- Great Britain.; Education, Elementary -- Activity programs -- Great Britain.
Work titles: HBJ Mathematics activity book Year 1: Where we live/Wet and dry. Welsh.
Notes: Arg Saesneg gwreiddiol = Original English ed: London: Harcourt Brace Jovanovich, 1990.

Addasiad Cymraeg o = Welsh adaptation of: HBJ mathematics activity book Year 1: Where we live/wet and dry.