Sinopsis
By the twenty-first century the world was drowning in its own population. A solution had to be found quickly - and it was, in gravi-power. Wonderful, unending source of power - only the scientists knew that its use was reducing the Earths distance from the sun at a dangerous rate. But if another planets gravi-power could harnessed . . .
An expedition was launched to Mars, known to be uninhabited - except that a woman was wandering around its surface who claimed she had come from another galaxy to warn Earth of a terrible menace, and there was a huge poly-hedron of metal emanting a force very much like that of gravipower.
Someone else had discovered it! A thousand years ago, or now? Friend, or enemy?
(First published 1965)
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Ficha Técnica
Editorial: Gateway
ISBN: 9780575101357
Idioma: Inglés
Fecha de lanzamiento: 29/09/2011
Especificaciones del producto
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