Planetary Encounters
From Author Wars - https://authorwars.com/publications/planetary-encounters-267222.html
Overview:
- Title: Planetary Encounters
- Author: Robert M. Powers
- Year: 1980
- ISBN-10: 0446933309
- Publisher: Warner Books
- Price: $2.95
- Pages: 368
- Binding: Paperback
- Type: Non-fiction
- Title Reference: Planetary Encounters
- Notes: Revised edition. Month on copyright page of Archive.org copy; "original drawings by Helen Zane Jensen" on title page.