Hutchins, R. M. (1952). Great books of the Western World: Ptolemy, Copernicus, Kepler. Encyclopaedia Britannica.
Chicago Edition CitationHutchins, Robert Maynard. Great Books of the Western World: Ptolemy, Copernicus, Kepler. Chicago: Encyclopaedia Britannica, 1952.
Deismireacht MLAHutchins, Robert Maynard. Great Books of the Western World: Ptolemy, Copernicus, Kepler. Encyclopaedia Britannica, 1952.
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