Yr arth yn y cwtsh dan stâr
By: Helen Cooper ; [addasiad: Dylan Williams].
Contributors: Williams, Dylan.
Publisher: Cymdeithas Lyfrau Ceredigion
Published: 1997
Place of publication: Aberystwyth
Language: wel
Number of pages: 30
Subjects: Bears -- Juvenile fiction.
Work titles: The bear under the stair.
Notes: Arg. Saesneg gwreiddiol = Original English ed.: London: Transworld Publishers, 1993.

Addasiad Cymraeg gan = Welsh adaptation by: Helen Cooper.

Addasiad Cymraeg o = Welsh adaptation of: The bear under the stair.