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Loading... Get to Know Pulleysby Karen Volpe
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All people have jobs to do. Some jobs take a lot of energy. Simple machines help people get jobs done without working too hard. There are six kinds of simple machines: inclined planes, levers, pulleys, wedges, screws, and wheels and axles. No library descriptions found. |
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Google Books — Loading... GenresMelvil Decimal System (DDC)621.8Technology Engineering and allied operations Applied physics Machine EngineeringLC ClassificationRatingAverage: No ratings.Is this you?Become a LibraryThing Author. |