There was a time when doctors couldn't see inside your body to find out what was wrong with you. When X-rays were discovered the world changed forever. Find out what the other top nine Scientific Discoveries are that Changed the World!
- ISBN10 1435891708
- ISBN13 9781435891708
- Publish Date 30 August 2009
- Publish Status Active
- Publish Country US
- Imprint PowerKids Press
- Format Hardcover (Library Binding)
- Pages 32
- Language English