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Reginald Harold Clark fonds Unidad documental compuesta
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Prospects for New Energy Sources

C. Lafkas: Nuclear, solar, geothermal, and fusion as new sources. The present state of the art, the special problems to be solved and the possibilities of success.

Man's Dependence Upon Energy

C. Lafkas: Utilization of energy. Traditional and present sources with particular reference to water power and fossil fuels and their distribution. The approaching depletion of fossil fuels.

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