Historical evidence that electrification caused the 20th century epidemic of diseases of civilization”
s u m m a r y The slow spread of residential electrification in the US in the first half of the 20th century from urban to rural areas resulted by 1940 in two large populations; urban populations, with nearly complete electrification and rural populations exposed to varying levels of electrification depending on the progress of electrification in their state. It took until 1956 for US farms t
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Estudios Científicos
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Sección con abundantes artículos científicos originales clasificados por dolencias o síntomas. Dedicada expresamente a biólogos, médicos e investigadores con conocimientos de Inglés/
This section has abundant original scientific papers classified by ailments or symptoms. It is dedicated expressly to biologists, doctors and investigators.