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Harvard University Press. Fine in Fine Dust Jacket. 1972. Hardcover. 4to. 968 pp. Two volumes. 1726. We specialize in fine books in collectible condition. Orders are professionaly packaged and shipped promptly. . P14 .

Philosophiæ Naturalis Principia Mathematica, often referred to as simply the Principia, is a work in three books by Isaac Newton, in Latin, first published 5 July 1687. After annotating and correcting his personal copy of the first edition, Newton published two further editions, in 1713 and 1726. The Principia states Newton's laws of motion, forming the foundation of classical mechanics; Newton's law of universal gravitation; and a derivation of Kepler's laws of planetary motion.