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The Empress of Space/The Alternate Martians [Ace Double M-129]
New York: Ace, 1965. Softcover. 12mo., Ace M-129. Original printed covers; 129 pp. and 127 pp. First edition. Very Near Fine with discreet owner's stamp inside front cover and with some light age-toning. Tight, crisp, clean and square. Item #929202413
Price: $25.00
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