Ymddygiad mater
By: addasiad Cymraeg: Eirian Davies Jones, Howard Williams.
Contributors: Jones, Eirian Davies.; Williams, Howard.; Welsh Joint Education Committee.
Series: Rhaglen Ddatblygu Addysg Hyblyg -- 3
Publisher: CBAC
Published: 1991
Place of publication: Caerdydd
Language: wel
Number of pages: 165
Subjects: Matter -- Properties.
Work titles: Behaviour of matter. Welsh.
Notes: Arg. Saesneg gwreiddiol = Original English ed: London: John Murray, 1989.

Addasiad Cymraego = Welsh adaptation of: Behaviour of matter.