Clouds (Let's-Read-and-Find-Out Science 1)
Why do you get sleepy?
When you feel tired, your body is telling you that it needs a rest. Everyone needs sleep. Babies need lots of sleep. Grown-ups need less. But no one can go without sleep for long. A team of scientists stayed awake for as long as they could to see what could happen. Read and find out some wide-eyed facts about the science of shut-eye.
| Country | USA |
| Brand | HarperCollins |
| Manufacturer | HarperCollins |
| Binding | Paperback |
| ItemPartNumber | FBA-|291386 |
| ReleaseDate | 1997-05-01 |
| UnitCount | 1 |
| Format | Illustrated |
| EANs | 9780064451413 |
