3788862
9780345278425
John Carter desperately needed the aid of Barsoom's greatest scientist. But Ras Thavas was the prisoner of a nightmare army of his own creation -- half-humans who lived only for conquest. And in their hidden laboratory seethed a horror that could engulf all of Mars.Edgar Rice [cover art by Michael Whelan] Burroughs is the author of 'SYNTHETIC MEN OF MARS' with ISBN 9780345278425 and ISBN 0345278429.
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