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Paperback, 2002
Current format, Paperback, 2002, , No Longer Available.
Paperback, 2002
Current format, Paperback, 2002, , No Longer Available. Offered in 0 more formats
We've all seen screws, but how do they work? Why is it easier to screw something into something than to simply push it in? with basic hands-on experiments and clear descriptions, this simple machine is explained.
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