Product Details
Category - Textbook/Educational Curriculum / Elementary
Format - Hardcover
Condition - Excellent
Listed - 3 years ago
Ships From - Kansas
Est. Publication Date - Oct 2005
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Product Details
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by: Andrew Solway
Overview
Looks at the simple machines used to build and defend castles, including pulleys, levers, wheels and axles, wedges, and screws.
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