The Ecolitian Enigma
L. E. Modesitt, Jr.
Xenocide
Orson Scott Card
Ender's Game: Chronological Order (3)
Shock Wave (Dirk Pitt Adventures)
Clive Cussler
Dirk Pitt (13)
Alternate Orbits (Ace Double)
A. Bertram Chandler
Forward the Foundation
Isaac Asimov