World of a Thousand Colours
Robert Silverberg
Bill, the Galactic Hero on the Planet of the Hippies From Hell
Harry; Bischoff, David Harrison
Bill, the Galactic Hero (5)
Another Fine Myth
Robert Lynn Asprin
Myth Adventures (1)
Gap [2] Forbidden Knowledge: The Gap Into Vision
Stephen R. Donaldson
The Gap Cycle (2)
Tramp royale
Robert A. Heinlein