King of the Fourth Planet / Cosmic Checkmate
From Author Wars - https://authorwars.com/books/king-of-the-fourth-planet--cosmic-checkmate-22207.html
Overview:
- Title: King of the Fourth Planet / Cosmic Checkmate
- Author: Robert Moore Williams Charles V. De Vet Katherine MacLean
- Year: 1962
- Type: Omnibuses
Editions/Publications:
- Unknown. King of the Fourth Planet / Cosmic Checkmate (Unknown, Robert Moore Williams, Ace Books, $0.40, 96+128 pages, dos, Omnibus)
- Unknown. King of the Fourth Planet / Cosmic Checkmate (Unknown, Charles V. De Vet, Ace Books, $0.40, 96+128 pages, dos, Omnibus)
- Unknown. King of the Fourth Planet / Cosmic Checkmate (Unknown, Katherine MacLean, Ace Books, $0.40, 96+128 pages, dos, Omnibus)