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Suggested Further Readings
I.A. Crawford. “How Common are Technological Civilizations?”Astronomy and Geophysics, 38:24–26, 1997.
M.J. Crowe.The Extraterrestrial Life Debate 1750–1900. Cambridge: Cambridge University Press, 1986.
S.J. Dick.Plurality of Worlds: The Origins of the Extraterrestrial Life Debate from Democritus to Kant. Cambridge: Cambridge University Press, 1982.
D. Goldsmith.The Quest for Extraterrestrial Life: A Book of Readings. California, University Science Books, California, 1980.
F. Tipler. “A Brief History of the Extraterrestrial Intelligence Concept.”Quarterly Journal of the Royal Astronomical Society, 22:133–145, 1981.
F. Tipler, “Additional Remarks on Extraterrestrial Intelligence.”Quarterly Journal of the Royal Astronomical Society, 22:279–291, 1981.
B. Zuckerman and M. H. Hart.Extraterrestrials: Where are They? Cambridge University Press, 1995.
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Gonzalez, G. Extraterrestrials: A modern view. Soc 35, 14–20 (1998). https://doi.org/10.1007/BF02686062
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DOI: https://doi.org/10.1007/BF02686062