Jennifer Boothroyd 
How Big? How Heavy? How Dense? [PDF ebook] 
A Look at Matter

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A light beach ball floats on the water. A heavy rock sinks in the mud. Matter is all around us. But what makes a beach ball different from a rock? And what properties do we use to compare matter? Read this book to find out!

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语言 英语 ● 格式 PDF ● ISBN 9780761372233 ● 出版者 Lerner Publishing Group ● 发布时间 2011 ● 下载 3 时 ● 货币 EUR ● ID 4753251 ● 复制保护 Adobe DRM
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