Pethau rhyfedd
Subtitle: rhan o deunydd Project Ehangu Gorwelion.
Contributors: Canolfan Astudiaethau Iaith.
Series: Ehangu gorwelion
Publisher: CanolfanAstudiaethau Iaith
Published: 1993
Place of publication: Llangefni
Language: wel
Number of pages: 58
Subjects: Curiosities and wonders -- Juvenile literature.