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Lieutenant Gulliver Jones, U.S.N., arrived on Mars in a most unexpected fashion and promptly found himself head-over-heels in adventure.

After modern science turns every human into a genetic time bomb with men dying at age twenty-five and women dying at age twenty, girls are kidnapped and married off in order to repopulate the world

In a future where genetic engineering has cured humanity of all diseases and defects but has also produced a virus that kills all females by age twenty and all males by the age twenty-five, teenage

After modern science turns every human into a genetic time bomb with men dying at age twenty-five and women dying at age twenty, teenaged Rhine finds hope for a brighter future from a surprising so