Secret Barrier X
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Overview:
- Title: Secret Barrier X
- Author: Gray Morrow
- Year: 1972
- Type: Cover Art
Variant Titles:
Editions/Publications:
- Unknown. Perry Rhodan #16: Secret Barrier X (Unknown, Gray Morrow, Ace Books, ISBN-10: 0441659861, $0.75, 128 pages, Paperback, MAGAZINE)
- Unknown. Perry Rhodan #16: Secret Barrier X (Unknown, Gray Morrow, Ace Books, $0.95, 128 pages, Paperback, MAGAZINE)