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Book, 2006
Current format, Book, 2006, , Available .
Book, 2006
Current format, Book, 2006, , Available . Offered in 0 more formats
Looks at the simple machines used to build and defend castles, including pulleys, levers, wheels and axles, wedges, and screws. Why were castles built and how were they defended? How would an enemy attempt to takeover a castle? Find out in this title filled with facts and charts.
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