Fascinated with dinosaurs, Patrick invents an imaginary explanation of why they become extinct.
- ISBN10 0899197973
- ISBN13 9780899197975
- Publish Date 19 September 1988 (first published 17 March 1986)
- Publish Status Out of Stock
- Publish Country US
- Publisher Houghton Mifflin
- Imprint Houghton Mifflin (Trade)
- Format Paperback
- Pages 32
- Language English