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Light, sound & electricity :

Light, sound & electricity : the Usborne internet-linked library of science / Kirsteen Rogers [et al.]. - New York : Scholastic Inc., c2001. - 64 p. : col. ill. ; 28 cm.

Includes glossary, index, and acknowledgements.

0439441471


Light.
Sound
Electricity.

534.1 U843 2001