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Sound

Carol Ballard

出版	Hachette Children's Group, 2008
主題	Juvenile Nonfiction / Science & Nature / Physics
ISBN	07502480689780750248068
URL	http://books.google.com.hk/books?id=UHLVGgAACAAJ&hl=&source=gbs_api

註釋

Explains the key science topic of Sound through simple text and engaging experiments.