A Robert Silverberg Omnibus
Robert Silverberg
Split Infinity
Piers Anthony
Apprentice Adept (1)
Juxtaposition
Apprentice Adept (3)
The Robot Aliens
Earl Binder & Martin H. Greenberg (eds.)
Robot Dreams
Isaac Asimov
Susan Calvin (1)
Robot Visions (Collection)
The Positronic Robot Stories (1)
Robot Visions
Robots and Empire
Elijah Bailey / R. Daneel Olivaw (4)
Robots Return
Robert Moore Williams
Adventures in Science Fiction 04 (1)
Rock of Ages
Walter Jon Williams
Maijstral (3)
The Rock Rats
Ben Bova
The Asteroid Wars (2)
Rocket Science
Jay Lake
The Dawn of Amber
John Gregory Betancourt
Dawn of Amber (1)
Rogue Clone
Steven L. Kent
Clone Republic (2)