Describes the characteristics and probable behavior of this three-horned dinosaur, as well as theories about its extinction.
- ISBN10 0531154718
- ISBN13 9780531154717
- Publish Date 1 March 2007 (first published 1 March 1999)
- Publish Status Out of Stock
- Publish Country US
- Imprint Children's Press(CT)
- Edition Revised ed.
- Format Paperback (US Trade)
- Pages 47
- Language English