When unscrupulous scientists try to kidnap Norby in order to learn the secret of the robot's anti-gravitational capabilities, he and Jeff discover on the dragon-inhabited planet Jamya the key to an even more precious secret.
- ISBN10 0802765564
- ISBN13 9780802765567
- Publish Date 1 January 1984
- Publish Status Out of Print
- Out of Print 5 October 2021
- Publish Country US
- Imprint Walker & Co
- Format Hardcover (Library Binding)
- Pages 138
- Language English