num_pages: 160
description: 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.
language: English
title: Synthetic Men of Mars
titlecomplete: Synthetic Men of Mars (Barsoom, #9)
characters: John Carter, Vor Daj, Ras Thavas
genres: Science Fiction, Science Fiction Fantasy, Sword and Planet, Planetary Romance, Fantasy, Classics, Pulp, Adventure, Fiction, Speculative Fiction
ratings_count: 3147
places: Barsoom
series: Barsoom
publisher: Ballantine Books