Phobos: Moon or Artifact?
From Author Wars - https://authorwars.com/books/phobos-moon-or-artifact-193456.html
Overview:
- Title: Phobos: Moon or Artifact?
- Author: Robert S. Richardson
- Year: 1965
- Type: Essays
Editions/Publications:
- Unknown. Worlds of Tomorrow, March 1965 (Unknown, Robert S. Richardson, Galaxy Publishing Corp., $0.50, 164 pages, digest, MAGAZINE)