The Earth is crowded and food is rationed, but a colony on Ganymede, one of the moons of Jupiter, offers an escape for teenager Bill Lermer and his family.
- ISBN10 0345324382
- ISBN13 9780345324382
- Publish Date 12 February 1985 (first published December 1962)
- Publish Status Out of Stock
- Out of Print 12 July 2011
- Publish Country US
- Publisher Random House USA Inc
- Imprint Ballantine Books Inc.
- Format Paperback
- Pages 221
- Language English