Concrete Mixers (Blastoff! Readers: Mighty Machines) Best
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Concrete Mixers (Blastoff! Readers: Mighty Machines) Overview
Have you ever wanted to leave your handprint in a patch of wet concrete? You may have wondered how concrete is formed and how it is set down to harden. This introduction offers a glimpse into this process and the giant machine behind it.
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*** Product Information and Prices Stored: Feb 20, 2012 15:48:02
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