When Bobby's brontosaurus birthday cake turns into a real creature and begins to grow, both problems and joys begin.
- ISBN10 0416541100
- ISBN13 9780416541106
- Publish Date 10 October 1985 (first published 26 May 1983)
- Publish Status Out of Print
- Out of Print 4 December 1992
- Publish Country GB
- Imprint Methuen Publishing Ltd
- Edition New edition
- Format Paperback
- Pages 32
- Language English