Gear Up!

Gear Up!

Marvelous Machine Projects

Book - 1999
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Introduces the workings of various kinds of simple machinery with moving parts, such as pulleys, levers, gears, cams, and conveyor belts and provides instructions for building these machines out of cardboard and other easily obtainable materials.
Publisher: Minneapolis : Lerner Publications, c1999
ISBN: 9780822535669
Characteristics: 30 p. : col. ill. ; 27 cm


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