Necromancer
Gordon R. Dickson
Childe Cycle (1)
Pet Peeve
Piers Anthony
Xanth (29)
Ptolemy's Gate
Jonathan Stroud
Bartimaeus Trilogy (3)
Stalking the Unicorn: A Fable of Tonight
Mike Resnick
Megastructure
Jon Frater
Battle Ring Earth (1)
Colony: A Military Sci-Fi Series
Battle Ring Earth (2)