Galileo Galilei, Dialogues Concerning Two New Sciences by Galileo Galilei. Translated from the Italian and Latin into English by Henry Crew and Alfonso de Salvio. With an Introduction by Antonio Favaro (New York: Macmillan, 1914). Chapter: The Motion of Projectiles 11 Aralık 2013 tarihinde Wayback Machine sitesinde arşivlendi.
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Galileo Galilei, Dialogues Concerning Two New Sciences by Galileo Galilei. Translated from the Italian and Latin into English by Henry Crew and Alfonso de Salvio. With an Introduction by Antonio Favaro (New York: Macmillan, 1914). Chapter: The Motion of Projectiles 11 Aralık 2013 tarihinde Wayback Machine sitesinde arşivlendi.