What are springs made of? How does a spring work? What happens if you pull a spring too far? Read this book to find out how springs make toys work?
| Author | Wendy Sadler |
| Publisher | Heinemann |
| Year of publication | 2006 |
| Number of pages | 32 |
| Language | English |
| ISBN-10 | 431049750 |
| ISBN-13 | 9780431049755 |
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