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A survey of machines through history, discussing their efficiency and some of the major inventions that made new machines possible: lever, wheel and axle, pulley, inclined plane, wedge, and screw.
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Juvenile literature, MachineryShowing 1 featured edition. View all 1 editions?
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Feedback?October 5, 2020 | Edited by MARC Bot | import existing book |
December 5, 2010 | Edited by Open Library Bot | Added subjects from MARC records. |
December 8, 2009 | Created by ImportBot | add works page |