Trydan /
Baker, Wendy,1961-
Haslam, Andrew.
Parsons, Alexandra.
Cymen.
Llandysul : Gwasg Gomer,
1997.
Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Two-Can Publishing, 1992.
Addasiad Cymraeg gan = Welsh adaptation by: Cymen Cyf.
Cyhoeddwyd dan nawdd Cynllun Adnoddau Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Resources Project.
Electricity
Electricity