Books about Human-alien encounters -- Fiction (sorted by popularity)
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Outpost on Io Leigh Brackett 145 downloads
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The Pacifists Charles E. Fritch 145 downloads
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The passionate pitchman Stephen Marlowe 145 downloads
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Backlash Winston K. Marks 144 downloads
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Juggernaut of Space Ray Cummings 144 downloads
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Tourists to Terra Mack Reynolds 144 downloads
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Big Stupe Charles V. De Vet 144 downloads
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Leave, Earthmen—Or Die! John Massie Davis 144 downloads
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The Unprotected Species Melvin Sturgis 144 downloads
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The Polite People of Pudibundia R. A. Lafferty 144 downloads
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Heel Philip José Farmer 144 downloads
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Needler Randall Garrett 144 downloads
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The Stranger Gordon R. Dickson 144 downloads
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Special Delivery Kris Neville 143 downloads
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Citadel of the Star Lords Edmond Hamilton 143 downloads
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Summer Guests James H. Schmitz 143 downloads
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The Cosmic Bluff Mack Reynolds 143 downloads
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The eternal quest Joseph Gilbert 143 downloads
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What's He Doing in There? Fritz Leiber 142 downloads
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The miniature menace Frank Belknap Long 142 downloads
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Under the Skin Leslie Perri 141 downloads
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Round-Up Time Chester Cohen 141 downloads
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Strange Exodus Robert Abernathy 140 downloads
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Growing up on Big Muddy Charles V. De Vet 140 downloads
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Child of the Sun Leigh Brackett 140 downloads