Keeping Fit: Body Systems

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Heinemann-Raintree Library, 2008 - Juvenile Nonfiction - 48 pages
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"How many muscles do you have? What is a heart beat? How does sweat help your body? 'Do It Yourself' offers an exciting new approach to understanding and investigation. Each book helps you to conduct your own experiments and activities, and to learn more about the world around us."

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About the author (2008)

Carol Ballard is a Heinemann-Raintree author.

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