Miles Errant
Lois McMaster Bujold.
The Mote in God's Eye
Larry Niven & Jerry Pournelle
The Scions of Shannara
Terry Brooks
Shannara (5)
Second Foundation
Isaac Asimov
Foundation (3)
The naked sun
The Norby chronicles
Janet Asimov & Isaac Asimov
The Positronic Man
Isaac Asimov & Silverberg, Robert