Books about Human-alien encounters -- Fiction (sorted by popularity)
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White spot Murray Leinster 165 downloads
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Prelude to Space Robert W. Haseltine 165 downloads
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The hellflower George O. Smith 165 downloads
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The Test Colony Winston K. Marks 164 downloads
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Angel's Egg Edgar Pangborn 164 downloads
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The Double Spy Dan T. Moore 164 downloads
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Manners and Customs of the Thrid Murray Leinster 163 downloads
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Battle for the Stars Edmond Hamilton 163 downloads
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A Bad Day for Vermin Keith Laumer 163 downloads
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Attitude Hal Clement 163 downloads
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Peacemaker Alan Edward Nourse 163 downloads
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Prison Planet Wilson Tucker 163 downloads
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The leaf Robert F. Young 162 downloads
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The Planet That Time Forgot Donald A. Wollheim 162 downloads
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The life watch Lester Del Rey 162 downloads
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Woman from another planet Frank Belknap Long 162 downloads
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Miss Tweedham's Elogarsn Robert Moore Williams 162 downloads
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The prince of space Jack Williamson 162 downloads
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Contamination Crew Alan Edward Nourse 161 downloads
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Pen Pal Stephen Marlowe 161 downloads
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Definition Damon Knight 161 downloads
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Restricted Tool Malcolm B. Morehart 161 downloads
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The mystery of Deneb IV Robert Silverberg 161 downloads
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When the atoms failed Jr. John W. Campbell 161 downloads
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Slaughter on Dornell IV Randall Garrett and Robert Silverberg 161 downloads