Sally M. Walker 
Investigating Sound [PDF ebook] 

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People, animals, machines, and wind all make sounds. But have you ever seen how sound waves move? Or made a sound wave bounce? Now you can! Explore sound with the fun experiments you’ll find in this book. As part of the Searchlight Books(TM) collection, this series sheds light on a key science question-How Does Energy Work? Hands-on experiments, interesting photos, and useful diagrams will help you find the answer!
€59.95
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语言 英语 ● 格式 PDF ● ISBN 9780761380177 ● 出版者 Lerner Publishing Group ● 发布时间 2011 ● 下载 3 时 ● 货币 EUR ● ID 5833071 ● 复制保护 Adobe DRM
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