Matches in Library of Congress for { ?s ?p Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.. }
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- 2006279665 abstract "Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.".
- 96015815 abstract "Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.".
- 2006279665 description "Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.".
- 96015815 description "Introduces the principles of pulleys and gears as simple machines, using examples from everyday life.".