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Stuart J. Murphy
Explains equation building as two frogs count their hops to a rock, a log, and a pond.
| Edition | 1st ed. |
|---|---|
| Publisher | HarperCollins |
| Pages | 33 |
| Search language | english |
| ISBN_10 | 0-060-25877-2 primary |
| ISBN_10 | 0-060-25878-0 primary |
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