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Anna Humphrey
Ruby is determined to win the gold with her fifth-grade science fair project, a Rube Goldberg machine to help her grandfather, but the real prize turns out to be something completely unexpected.
| Edition | First edition. |
|---|---|
| Pages | 131 |
| Search language | english |
| ISBN_10 | 1-442-48027-0 primary |
| ISBN_10 | 1-442-48029-7 primary |
| ISBN_13 | 978-1-442-48027-8 primary |
| ISBN_13 | 978-1-442-48029-2 primary |
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