Deryn
By: addasiad gan Iola Baines.
Contributors: Baines, Iola.
Publisher: Cyhoeddiadau Mei
Published: 1991
Place of publication: Penygroes, Caernarfon
Language: wel
Number of pages: 211
Notes: Yn seilidig ar gyfres deledu S4C = Based on the S4C television series.

Cyhoeddwyd yn wreiddiol = Originally published: 1989.