Y ddaear
By: Peter Whitehead ; (addaswyd i'r Gymraeg gan Ken a Sian Owen).
Contributors: Welsh Joint Education Committee.
Series: Gwyddoniaeth gyfun
Publisher: Cyd-bwyllgor Addysg Cymru mewn cydweithrediad â Gwasg Prifysgol Rhydychen
Published: 1994
Place of publication: Caerdydd
Language: wel
Number of pages: 111
Subjects: Earth -- Juvenile literature.; Outer space -- Juvenile literature.
Work titles: Earth.
Notes: Arg Saesneg gwreiddiol = Original English ed: Oxford : Oxford University Press, 1992.

Yn cynnwys mynegai = Includes index.

Addasiad Cymraeg o = Welsh adaptation of: Co-ordinated science: The earth.