The Problem of Increasing Human Energy, with Special References to the Harnessing of the Sun's Energy
Tesla, Nikola
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An Introduction to Waldorf Education and Other Essays
Steiner, Rudolf
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Chiropractor Bible: The Chiropractor Book of Secrets
Rimpson, Danny
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Experiments with Alternate Currents of Very High Frequency and Their Application to Methods of Artificial Illumination
Tesla, Nikola
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High Frequency Oscillators for Electro-Therapeutic and Other Purposes
Tesla, Nikola
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Experiments with Alternate Currents of High Potential and High Frequency
Tesla, Nikola
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A New System of Alternating Current Motors and Transformers
Tesla, Nikola
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