Experiments with Alternate Currents of Very High Frequency and Their Application to Methods of Artificial IlluminationNikola, TeslaHäftad123 kr
Problem of Increasing Human Energy with Special References to the Harnessing of the Sun's EnergyNikola, TeslaHäftad148 kr
Adventures and Letters of Richard Harding DavisCharles Belmont Davis, Richard Harding DavisHäftad279 kr
Adventures and Letters of Richard Harding DavisCharles Belmont Davis, Richard Harding DavisHäftad279 kr