Gwir bob gair!
By: cartwnaua dylunio gan Glyn Rees.
Contributors: Rees, Glyn.; Urdd Gobaith Cymru.
Publisher: Urdd Gobaith Cymru
Published: 1987
Place of publication: (Aberystwyth)
Language: wel
Number of pages: 60
Subjects: Children's encyclopedias and dictionaries.