The Reefs of Space, by Frederik Pohl and Jack Williamson
The Ring of Ritornel, by Charles L Harness
This is the Way the World Begins, by J T McIntosh
The Mask of the Sun, by Fred Saberhagen
Wildeblood's Empire, by Brian M Stableford
Tides of Light, by Gregory Benford
The World Menders, by Lloyd Biggle Jr
The Wrong End of Time, by John Brunner
Visible Light, by C J Cherryh
The Time Bender, by Keith Laumer
The Patchwork Girl, by Larry Niven
Vigilant, by James Alan Gardner
Tom O'Bedlam, by Robert Silverberg
World Out of Mind, by J T McIntosh
The Loafers of Refuge, by Joseph Green
The Third Eagle, by R A MacAvoy
The Mask of Caliban, by Michael Pryor
The Man Who Counts aka War of the Wing Men, by Poul Anderson
The World Shuffler, by Keith Laumer
Virtual Mode, by Piers Anthony
The Man with a Thousand Names, by A E van Vogt
The Red Tape War, Jack L Chalker, Mike Resnick, George Alec Effinger
The Wizard of Anharitte, by Colin Kapp
The Sodom & Gomorrah Business, by Barry N Malzberg