Describes various kinds of simple machines, showing how they can be made out of easily obtainable objects and detailing experiments that show how they make tasks easier to perform.
"synopsis" may belong to another edition of this title.
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Paperback. Condition: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less 0.25. Seller Inventory # G0516274686I4N00
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Condition: Very Good. Used book that is in excellent condition. May show signs of wear or have minor defects. Seller Inventory # 5379233-6
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Seller: Wonder Book, Frederick, MD, U.S.A.
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Seller: SecondSale, Montgomery, IL, U.S.A.
Condition: Good. Good condition ex-library book with usual library markings and stickers. Seller Inventory # 00091146915
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