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Why Do We Need Sleep?
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from Gareth Stevens Pub (September 1, 1993)
9780836808063 | details & prices | 8.00 × 10.00 × 0.25 in. | Rec. grade levels 2-3 | 0.60 lbs | List price $21.27
About: A brief discussion of sleep, why we need it, what happens when we sleep, and sleep disorders
About: A brief discussion of sleep, why we need it, what happens when we sleep, and sleep disorders