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![The Controversy on the Comets of 1618: Galileo Galilei, Horatio Grassi, Mario Guiducci, Johann Kepler [Hardcover]](/itemImage/2/6/1/0/2_6649208.jpg "The Controversy on the Comets of 1618: Galileo Galilei, Horatio Grassi, Mario Guiducci, Johann Kepler [Hardcover]")