Books about Human-alien encounters -- Fiction (sorted by popularity)
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Operation Terror
Murray Leinster
118 downloads
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The hellflower
George O. Smith
117 downloads
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Earth Alert!
Kris Neville
117 downloads
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The Vanishing Venusians
Leigh Brackett
116 downloads
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Terror Out of Space
Leigh Brackett
116 downloads
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Special Delivery
Kris Neville
115 downloads
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My Fair Planet
Evelyn E. Smith
114 downloads
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Mightiest Qorn
Keith Laumer
114 downloads
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Peril of the Starmen
Kris Neville
112 downloads
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Nobody saw the ship
Murray Leinster
111 downloads
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Lord of a Thousand Suns
Poul Anderson
111 downloads
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Laboratory
Jerome Bixby
110 downloads
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Survival Type
Jesse F. Bone
109 downloads
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Attitude
Hal Clement
109 downloads
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Honeymoon in bedlam
Nelson S. Bond
109 downloads
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Advance Agent
Christopher Anvil
109 downloads
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Retief of the Red-Tape Mountain
Keith Laumer
109 downloads
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Cry from a Far Planet
Tom Godwin
108 downloads
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Invader From Infinity
George A. Whittington
108 downloads
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If You Was a Moklin
Murray Leinster
108 downloads
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Common Denominator
John D. MacDonald
108 downloads
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The Madman From Earth
Keith Laumer
108 downloads
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Pen Pal
Stephen Marlowe
107 downloads
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Doorstep
Keith Laumer
107 downloads
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The Green World
Hal Clement
107 downloads
