qDescribes pulleys, including what they are, how they work, past uses, and common uses of these simple machines todayq--Provided by publisher.aquot;Describes pulleys, including what they are, how they work, past uses, and common uses of these simple machines todayaquot;--Provided by publisher.
Title | : | Pulleys to the Rescue |
Author | : | Sharon Thales |
Publisher | : | Capstone - 2007-01-01 |
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