Tonnau a dirgryniadau
By: addasiad Cymraeg: Huw R. K. Davies, Howard Williams.
Contributors: Davies, Huw R. K.; Williams, Howard.; Welsh Joint Education Committee.; Training Agency.
Series: Rhaglen Ddatblygu Addysg Hyblyg -- 1
Publisher: CBAC
Published: 1991
Place of publication: Caerdydd
Language: wel
Number of pages: 141
Subjects: Vibrations -- Juvenile literature.; Electromagnetic waves -- Juvenile literature.; Physics -- Study and teaching (Secondary) -- Wales.
Work titles: Waves and vibrations. wel.
Notes: Arg Saesneg gwreiddiol = Original English ed: London: John Murray, 1989.

"Cyhoeddir ... fel rhan o Raglen Ddatblygu Addysg Hyblyg a ariennir gan ADAG ac a weinyddir yng Nghymru gan Gyd-bwyllgor Addysg Cymru".

Addasiad o = Adaptation of: Waves and vibrations.