"Thuvia, Marsin neito" by Edgar Rice Burroughs is a science fantasy novel published in 1916. The fourth book in the Barsoom series shifts focus to Carthoris, son of John Carter, who desperately loves Princess Thuvia of Ptarth—but she is promised to another. When Thuvia is kidnapped and Carthoris is blamed, he must rescue her while war erupts between Martian nations. His quest leads him to ancient Lothar, where mysterious inhabitants create deadly warriors from pure thought. (This is an automatically generated summary.)
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