Roseann Feldmann & Sally M Walker 
Screws [PDF ebook] 

Sokongan

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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Format PDF ● Halaman-halaman 48 ● ISBN 9780822500667 ● Penerbit Lerner Publishing Group ● Diterbitkan 2001 ● Muat turun 3 kali ● Mata wang EUR ● ID 4754238 ● Salin perlindungan Adobe DRM
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