Elementary discussion of the importance of sleep and what happens to our brains and bodies during slumber
  • ISBN10 0064451410
  • ISBN13 9780064451413
  • Publish Date 1 May 1997 (first published 31 December 1974)
  • Publish Status Active
  • Out of Print 12 December 2008
  • Publish Country US
  • Publisher HarperCollins Publishers Inc
  • Imprint HarperCollins
  • Edition New edition
  • Format Paperback
  • Pages 32
  • Language English