Rhagor am ddefnyddio egni
By: [golygydd: Pamela Wadsworth] ; [addasiad Cymraeg: Ken a Sian Owen].
Contributors: Wadsworth, Pamela.
Series: Gwyddoniaeth gynradd Nuffield : archwilio prosesau a chysyniadau gwyddonol; Gwyddoniaeth gynradd Nuffield
Publisher: Dref Wen
Published: 1996
Place of publication: Caerdydd
Language: wel
Number of pages: 25
Subjects: Science -- Study and teaching (Elementary); Force and energy -- Study and teaching (Elementary); Power resources -- Study and teaching (Elementary); Fuel -- Study and teaching (Elementary)
Work titles: More about using energy. Welsh.
Notes: Arg. Saesneg gwreiddiol = Original English ed.: London: Collins Educational, 1993.

Addasiad Cymraeg gan = Welsh adaptation by: Ken a Sian Owen.

Teitl clawr = Cover title.

Yn cynnwys mynegai = Includes index.

Addasiad Cymraeg o = Welsh adaptation of: More about using energy.