The Sex Sphere
Rudy Rucker
Quest of the Dawn Man
J. H. Rosny
Color Vision
Mary Rosenblum
A Common Night
Bruce Holland Rogers
In the Matter of the Ukdena
A Yank at Valhalla / The Sun Destroyers
Ross Rocklynne & Edmond Hamilton
The Sun Destroyers
Ross Rocklynne
Serpents' Teeth
Spider Robinson
Icehenge
Kim Stanley Robinson
The Rebellers
Jane Roberts
Phoenix Ship
Walt Richmond & Leigh Richmond
Positive Charge
Shock Wave