Vicky Willows
Published: 2011
Total Pages: 32
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"What's 30,000 miles long and found right inside your body? Your circulatory system! And which organs help your circulatory system get its job done? Your lungs! This fascinating, fact-filled book about the heart and lungs provides amazing information, clear explanations, and up-close photos and illustrations of the circulatory and respiratory systems at work.." -- Back cover.