The Ring of Ritornel, by Charles L Harness
The World Menders, by Lloyd Biggle Jr
Vigilant, by James Alan Gardner
The Loafers of Refuge, by Joseph Green
Time and Stars, by Poul Anderson
War Worlds IV, created by Jerry Pournelle. Invasion
The People Trap plus Mindswap, by Robert Sheckley
The Testament of Andros, by James Blish
The Wrong End of Time, by John Brunner
Tides of Light, by Gregory Benford
The Reefs of Space, by Frederik Pohl and Jack Williamson
The Mask of the Sun, by Fred Saberhagen
Wildeblood's Empire, by Brian M Stableford
The Mask of Caliban, by Michael Pryor
The World Shuffler, by Keith Laumer
The Shape Changer, by Keith Laumer
The Orbit Science Fiction Yearbook 3, edited by David S Garnett
Time Gladiator, by Mack Reynolds
The New Adam, by Stanley G Weinbaum
The Third Eagle, by R A MacAvoy
Warriors of the Storm, by Jack L Chalker
World Out of Mind, by J T McIntosh
Trek: The Unauthorized A-Z, by Hal Schuster & Wendy Rathbone
The Memory of Earth, by Orson Scott Card