When his class wins a free trip to the circus, Goofball gathers clues to track down the winning number his teacher must produce.
- ISBN10 0448439123
- ISBN13 9780448439129
- Publish Date 19 January 2006
- Publish Status Remaindered
- Out of Print 27 August 2015
- Publish Country US
- Imprint Grosset & Dunlap
- Format Paperback (US Trade)
- Pages 48
- Language English