When Arnold and Koesha try to organize Arnold's rock collection, they can't agree on the best way to sort the rocks. Liz comes up with a rock-solid solution chat makes everyone proud.
- ISBN10 0590818384
- ISBN13 9780590818384
- Publish Date 1 November 1998
- Publish Status Out of Stock
- Out of Print 18 October 2010
- Publish Country US
- Imprint Scholastic US
- Format Paperback
- Pages 24
- Language English