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Book, 2014
Current format, Book, 2014, , Available .
Book, 2014
Current format, Book, 2014, , Available . Offered in 0 more formats
"Presents information on simple machines with a focus on levers. Explains what a lever is, how levers work, and includes examples of past and present uses. Intended for third to fifth grade students"--Provided by publisher.
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