1 A. L. Chizhevsky. The Earthly Echo of Solar Storms. Мoscow, 1976. 116. 2 K. E. Tsiolkovsky. The Will of the Universe: Unknown Rational Powers. Kaluga, 1929. 14. 3 A. L. Chizhevsky. The Physical Factors of the Historical Process. Kaluga, 1924. 52. 4 qtd. in: K. Kedrov. Parallel Worlds. 235. 5 V. I. Vernadsky. Studies on Natural Philosophy. Мoscow, 2000. 31. 6 V. I. Vernadsky. Studies on Natural Philosophy. 29–31.
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