Jim Mawr
By: ysgrifennwyd ac arluniwyd gan Sue O'Brian ; addaswyd i'r Gymraeg (o'r Saesneg) gan Gwenllïan Gwyn Jones.
Contributors: Jones, Gwenllïan Gwyn.
Publisher: D. Brown a'i Feibion
Published: 1977
Place of publication: Y Bontfaen (i.e. Cowbridge) ((Eastgate Press, Cowbridge, S. Glam.))
Language: wel
Number of pages: 28
Subjects: Children's literature, Welsh.