Rhifo a mesur
Subtitle: Y mesurau metrig
By: R. P. A. Edwards a Vivian Gibbon ; lluniau gan Hugh Chevins.
Contributors: Gibbon, Vivian.; Chevins, Hugh.
Series: Ein byd; Llyfr geiriau eich plant
Publisher: Burke
Published: 1970
Place of publication: Llundain
Language: wel
Number of pages: 32
Work titles: Counting and measuring.
Notes: Full title taken from cover.

Translated from the English.