Simple machines : using simple machines to learn about forces, friction, work, power, and potential and kinetic energy / [written by Toni Albert ; illustrated by Michael Moon]

Bibliographic Details
Main Author: Albert, Toni.
Other Authors: Moon, Michael.
Format: Book
Published: Greensboro, NC : Carson-Dellosa Pub. Co., c1994.
Series:Step-by-step science series.

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