Flight of the Nighthawks
Raymond E. Feist
The Darkwar Saga (1)
Two to Conquer
Marion Zimmer Bradley
Darkover (8)
Moon of the Terrible
SM Reine
The Cain Chronicles (3)
The Forever War
Joe Haldeman
Forever War (1)
Truthseeker
C. E. Murphy
Worldwalker Duology (1)