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COSMOLOGY: OR, UNIVERSAL SCIENCE. CABALA. ALCHEMY. CONTAINING THE MYSTERIES OF THE UNIVERSE… BY MEANS OF THE SECRET SYMBOLS OF ROSICRUCIANS OF THE SIXTEENTH AND SEVENTEENTH CENTURIES BY FRANZ HARTMANN (1888)
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SOME STUDIES OF RADIO TRANSMISSION OVER LONG PATHS MADE ON THE BYRD ANTARCTIC EXPEDITION BY L.V. BERKNER (1932)
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