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