LIBROS DEL AUTOR: esther greenfield

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  • Tough Men in Hard Places
    Esther Greenfield
    The mines in southwestern Colorado were in trouble and needed cheap, reliable electric power to keep running. This is the story of innovative solutions to solve the problem using alternating current electricity and the incredible effort, tenacity, and toughness of the men who overcame formidable obstacles to bring electrification to the mines, ranches, homes, and businesses in ...
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    24,90 €