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Balanced rating combines the average and the number of ratings; small samples carry less weight. How ranking works ↗

Robots & androids2013

Optimus Prime versus Predaking

John Sazaklis

4.0(1)Open Library rating out of 5

Options

Robert Sheckley

4.0(1)Open Library rating out of 5

Book1974

Orbit 14

Damon Knight

4.0(1)Open Library rating out of 5

Book1974

Orbit 15

Damon Knight

4.0(1)Open Library rating out of 5

Book1975

Orbit 17

Damon Knight

4.0(1)Open Library rating out of 5

Book1978

Orbit 20

Damon Knight

4.0(1)Open Library rating out of 5

Book1968

Orbit 3

The Best New Science Fiction of the Year

Gene Wolfe; John Jakes; Philip José Farmer; Richard Wilson, Joanna Russ, Richard McKenna, Gene Wolfe, Doris Pitkin Buck, Kate Wilhelm, Philip José Farmer, James Sallis, John Jakes; Damon Knight; Wilson McKenna Russ Wolfe Buck Wilhelm Farmer Sallis Jakes

4.0(1)Open Library rating out of 5

Book1969

Orbit 5

Damon Knight

4.0(1)Open Library rating out of 5

New societies1961

Orbit unlimited

A science-fiction adventure (Pyramid original)

Poul Anderson

4.0(1)Open Library rating out of 5

Book2017

Orbital Cloud

Taiyo Fujii

4.0(1)Open Library rating out of 5

Book2007

Orbital Decay

Allen M. Steele

4.0(1)Open Library rating out of 5

Ordeal in Otherwhere

Andre Norton

4.0(1)Open Library rating out of 5

Book2005

Ordinary

Jim Grimsley; Donato Giancola

4.0(1)Open Library rating out of 5

Book2010

Origin

J. A. Konrath

4.0(1)Open Library rating out of 5

Originator

a Cassandra Kresnov novel

Joel Shepherd

4.0(1)Open Library rating out of 5

Genetic engineering2007

Origins

Book Three in the Missing Link Trilogy (The Missing Link Trilogy)

Kate Thompson; Kate Thompson

4.0(1)Open Library rating out of 5

Book1984

Orion

Ben Bova

4.0(1)Open Library rating out of 5

Book1995

Orion among the stars

Ben Bova

4.0(1)Open Library rating out of 5

Time travel1995

Orion and the Conqueror (Orion)

Ben Bova

4.0(1)Open Library rating out of 5

Time travel1991

Orion In The Dying Time (Orion)

Ben Bova

4.0(1)Open Library rating out of 5

Book1980

ORIONS SWORD (The Future at War, Vol III)

Reginald Bretnor; Isaac Asimov

4.0(1)Open Library rating out of 5

Book2013

Orleans

Sherri L. Smith

4.0(1)Open Library rating out of 5

Orn

Piers Anthony

4.0(1)Open Library rating out of 5

Book1988

Orphan of Creation

Roger MacBride Allen

4.0(1)Open Library rating out of 5