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The enchanted world of sleep
by
Why do we sleep? How much sleep do we really need? What causes sleep disorder-and what can be done about them? We have all puzzled over-or been plagued by-the mysteries of sleep. Now a leading researcher provides an engaging and …
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the long version
Why do we sleep? How much sleep do we really need? What causes sleep disorder-and what can be done about them? We have all puzzled over-or been plagued by-the mysteries of sleep. Now a leading researcher provides an engaging and informative introduction that answers many of our most baffling questions.
Margaret's verdict
"Why do we sleep? How much sleep do we really need? What causes sleep disorder-and what can be done about them? We have all puzzled over-or been plagued by-the mysteries …"
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