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Sleep is for Everyone

Part of the Let's Read-&-find-out S. series
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Presenting a different kind of bedtime story, scientists discover that your brain needs a rest after a long day of thinking, just as your muscles would need a rest after a long day of work.

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Product Details
HarperCollins
0060253924 / 9780060253929
Hardback
154.6
01/11/1997
United States
English
32p. : chiefly ill.
26 cm
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