Naid trwy amser!
By: stori ac arlunwaith: Charles W. Gunther ; addaswyd i'r Gymraeg gan Hugh Roberts [a] Philip Lloyd.
Contributors: Roberts, Hugh.; Lloyd, Philip.
Publisher: Canolfan Technoleg Addysg Clwyd = Clwyd Centre for Educational Technology
Published: 1980
Place of publication: Wyddgrug
Language: wel
Notes: Translated from the English.