Planetary Encounters
From Author Wars - https://authorwars.com/books/planetary-encounters-902627.html
Overview:
- Title: Planetary Encounters
- Author: Robert M. Powers
- Year: 1978
- Type: Non-fiction
Editions/Publications:
- Unknown. Planetary Encounters (Unknown, Robert M. Powers, Warner Books, ISBN-10: 0446933309, $2.95, 368 pages, Paperback, Non-fiction)