Gwyddoniaeth
Subtitle: cyfnod allweddol dau : y llyfr gwaith
By: addasiad Cymraeg gan Carroll Hughes ; golygwyd gan Richard Parsons.
Contributors: Parsons, Richard.; Hughes, Carroll.; University of Wales, Aberystwyth. Centre for Educational Studies.
Publisher: Y Ganolfan Astudiaethau Addysg
Published: 2001
Place of publication: Aberystwyth
Language: wel
Number of pages: 56
Subjects: Science -- Study and teaching (Elementary)
Notes: Addasiad Cymraeg gan = Welsh Adaptation by : Carroll Hughes.

Argraffiad Saesneg gwreiddiol = Original English edition : Kirkby-in-Furness : Coordination Group Publications, 2001.