When Bobby inadvertently gets into a fight with his best friend Holly, their disagreement develops into a boys versus girls war involving their whole fourth-grade class.
- ISBN10 054505592X
- ISBN13 9780545055925
- Publish Date 1 September 2009
- Publish Status Out of Stock
- Publish Country US
- Imprint Arthur A. Levine Books
- Format Hardcover
- Pages 160
- Language English