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- ISBN: 9780743435598 | 0743435591
- Cover: Trade Paper
- Copyright: 8/27/2002
Crowell becomes caught in the middle between a pending conflict between two separate groups of Earth colonists--the Swimmers, who live in zero-gravity, and the planet-dwelling Walkers--only to discover that a hidden alien race is attempting to provoke a war of extinction between the two groups. Original.