To Save a World (The World Wreckers; The Planet Savers; The Waterfall)

An omnibus edition of the best-selling author's Darkover novels features World Wreckers, in which Darkover becomes the target of an intergalactic company that destroys the ecology and economy of a planet, and Planet Savers, in which a Terran doctor journeys to the unexplored regions of the Darkovan mountains in search of a cure for a devastating plague. Original.