Subject search: Pulleys -- Juvenile Literature.
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- 3.95 out of 5 stars
Simple MachinesSimple Machines, BookWheels, Levers, and Pulleys
by Adler, David A. Simple Machine Experiments Using Seesaws, Wheels, Pulleys, and MoreSimple Machine Experiments Using Seesaws, Wheels, Pulleys, and More, BookOne Hour or Less Science Experiments
by Gardner, Robert
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