Books about Extraterrestrial beings -- Fiction (sorted by popularity)
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- The colour out of space H. P. Lovecraft 582 downloads
- The Sex Life of the Gods M. E. Knerr 392 downloads
- The Black Star Passes Jr. John W. Campbell 246 downloads
- Islands of Space Jr. John W. Campbell 229 downloads
- The master mind of Mars Edgar Rice Burroughs 197 downloads
- The Aliens Murray Leinster 197 downloads
- Star Surgeon Alan Edward Nourse 174 downloads
- 30-day wonder Richard Wilson 169 downloads
- Pictures Don't Lie Katherine MacLean 150 downloads
- Beside the golden door Henry Slesar 138 downloads
- A Bad Day for Vermin Keith Laumer 136 downloads
- If You Was a Moklin Murray Leinster 132 downloads
- The green girl Jack Williamson 132 downloads
- Triplanetary E. E. Smith 127 downloads
- Ten From Infinity Paul W. Fairman 121 downloads
- The silent invaders Robert Silverberg 120 downloads
- Citadel of the Star Lords Edmond Hamilton 120 downloads
- The Star Mouse Fredric Brown 118 downloads
- The Winds of Time James H. Schmitz 118 downloads
- And Then the Town Took Off Richard Wilson 116 downloads
- The Onslaught from Rigel Fletcher Pratt 115 downloads
- Doorstep Keith Laumer 115 downloads
- The Measure of a Man Randall Garrett 109 downloads
- Meeting of the Minds Robert Sheckley 107 downloads
- Boarding party Robert F. Young 107 downloads
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