When one of them pulls the lever on the museum's dinosaur display, three children are transported back to a prehistoric dinosaur land.
- ISBN10 0884361934
- ISBN13 9780884361930
- Publish Date 1 January 1975
- Publish Status Out of Print
- Out of Print 25 January 2021
- Imprint EMC Corp.
- Format Hardcover
- Pages 37
- Language English