999!
By: (Cynllun Datblygu Profion Diagnostig a Defnyddiau Cymraeg) ; (awdur Rhiannon Williams) ; (arlunydd Jac Jones).
Contributors: Jones, Jac.; Cynllun Datblygu Profion Diagnostig a Defnyddiau Cymraeg.
Series: Cynllun y canllaw -- 11
Publisher: Gwasg Gomer
Published: 1985
Place of publication: Llandysul
Language: wel
Number of pages: 24
Subjects: Welsh language -- Readers.
Notes: Text, ill on inside covers.