Challenge of the Unknown
From Author Wars - https://authorwars.com/books/challenge-of-the-unknown-906261.html
Overview:
- Title: Challenge of the Unknown
- Author: Forrest J. Ackerman
- Year: 1973
- Type: Magazine Editor
- Series: Perry Rhodan (US)
- Number in Series: 32
Editions/Publications:
- Unknown. Perry Rhodan #32: Challenge of the Unknown (Unknown, Forrest J. Ackerman, Ace Books, $0.75, 160 pages, Paperback, MAGAZINE)