How Do You Lift a Lion? - Wells, Robert E
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Provides a simple introduction to the use of levers, pulleys, and wheels to move heavy objects.

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Produktbeschreibung
Provides a simple introduction to the use of levers, pulleys, and wheels to move heavy objects.
Autorenporträt
Robert E. Wells is the author and illustrator of many award-winning science books for children, including Can You Count to a Googol? and Why Do Elephants Need the Sun?. He lives with his wife in Washington.