Do you know what a lever is? How can a lever help you? Through simple experiments and clear explanations, understand how this simple machine functions and how it can make the work that you do easier.
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Bahasa Inggeris ● Format PDF ● ISBN 9780822500643 ● Penerbit Lerner Publishing Group ● Diterbitkan 2001 ● Muat turun 3 kali ● Mata wang EUR ● ID 4743435 ● Salin perlindungan Adobe DRM
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