Nancy Marie Brown - The Abacus and the Cross: The Story of the Pope Who Brought the Light of Science to the Dark Ages

New York, Basic Books, 2010. First Edition, First Printing. Hardcover. 310p. A hardcover book in fine condition with a like dustjacket. Price sticker residue on back; otherwise clean and tight. Discusses the scientific pursuits of Pope Sylvester II. .

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