Magnetau a thrydan /
Paull, John,author.
Archer, Dorothy,1940-author.
Robinson, Peter,1953 September 9-illustrator.
Clark, Tim,1949 June 17-photographer.
Dafydd, Marged,translator.
Orginally published in English as: Magnets and electricity / by John and Dorothy Paul.
Includes index.
Electricity
Magnets