Books about Extraterrestrial beings -- Fiction (sorted by popularity)
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- The colour out of space H. P. Lovecraft 908 downloads
- The Sex Life of the Gods M. E. Knerr 889 downloads
- That worlds may live Nelson S. Bond 560 downloads
- Islands of Space Jr. John W. Campbell 257 downloads
- Man of Many Minds E. Everett Evans 235 downloads
- Ten From Infinity Paul W. Fairman 228 downloads
- The master mind of Mars Edgar Rice Burroughs 200 downloads
- The Black Star Passes Jr. John W. Campbell 195 downloads
- The Sentimentalists Murray Leinster 190 downloads
- Triplanetary E. E. Smith 188 downloads
- The Aliens Murray Leinster 167 downloads
- Meeting of the Minds Robert Sheckley 151 downloads
- The Star Mouse Fredric Brown 148 downloads
- The Winds of Time James H. Schmitz 147 downloads
- Star Surgeon Alan Edward Nourse 135 downloads
- Pictures Don't Lie Katherine MacLean 133 downloads
- 30-day wonder Richard Wilson 132 downloads
- Keep Your Shape Robert Sheckley 127 downloads
- The Invader Alfred Coppel 116 downloads
- Indirection Everett B. Cole 114 downloads
- A trace of memory Keith Laumer 114 downloads
- If You Was a Moklin Murray Leinster 113 downloads
- Trajectory to Taurus Les Cole 112 downloads
- Citadel of the Star Lords Edmond Hamilton 108 downloads
- Operation Terror Murray Leinster 107 downloads
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