Books about Human-alien encounters -- Fiction (sorted by popularity)
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The Useless Bugbreeders James Stamers 72 downloads
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A Gift For Terra Fox B. Holden 72 downloads
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The Mercurian Frank Belknap Long 72 downloads
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The ionian cycle William Tenn 72 downloads
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To Save Earth Edward W. Ludwig 72 downloads
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Treasure of Triton Charles A. Baker 72 downloads
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Revolt in the Ice Empire Ray Cummings 72 downloads
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Redevelopment George O. Smith 72 downloads
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The night of no moon H. B. Fyfe 72 downloads
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Child of the Sun Leigh Brackett 71 downloads
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Return Engagement Margaret St. Clair 71 downloads
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Cargo to Callisto Jerome Bixby 71 downloads
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The hellflower George O. Smith 71 downloads
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Proktols of Neptune Henry Hasse 71 downloads
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Homecoming Horde Robert Silverberg 71 downloads
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The Terror Out of Space Dwight V. Swain 70 downloads
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Inside John Barth William W. Stuart 70 downloads
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Summer Guests James H. Schmitz 70 downloads
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Quest of Thig Basil Wells 70 downloads
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Perfect Answer Jr. L. J. Stecher 70 downloads
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Gods of Space Ray Cummings 70 downloads
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Crisis on Titan James R. Adams 70 downloads
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"Hey Ma, Where's Willie?" I. M. Bukstein 70 downloads
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Green Grew the Lasses Ruth Laura Wainwright 69 downloads
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The cosmic jackpot George O. Smith 69 downloads