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The Pulley (Simple Machines.)
The Pulley - Simple Machines.
Author: Patricia Armentrout
Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.
ISBN-13: 9781571031785
ISBN-10: 1571031782
Pages: 24
Reading Level: Ages 4-8
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Publisher: Rourke Publishing
Book Type: Library Binding
Members Wishing: 0
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