Anthropol / The Time Mercenaries (Ace Double, H-59)
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Destination: Saturn; Invader on My Back (Ace Double H-85)
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The Duplicators
$13.37 - $24.95
Space Captain / The Mad Metropolis
$7.69
Contraband from Otherspace / Reality Forbidden
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The Duplicators / No Truce with Terra
$6.39
Come, Hunt an Earthman
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The Time Mercenaries
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To The Stars - And Beyond: The Second Borgo Press Book Of Science Fiction Stories
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Speaking of Dinosaurs
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Twin Planets
$8.79
These Savage Futurians
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The Prodigal Sun
$6.89 - $50.93
The Time Mercenaries & Anthropol
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No truce with Terra
$15.19
The Mad Metropolis
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Prodigal Son
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. .
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Guilty as Charged: Fantastic Crime Stories
$20.15