首页 / 官方藏书 / Astronomy Explained Upon Sir Isaac Newton's Principles / And made easy to those who have not studied mathematics / CHAP. VI. The Ptolemean System refuted. The Motions and Phases of Mercury and Venus explained.
首页 / 官方藏书 / Astronomy Explained Upon Sir Isaac Newton's Principles / And made easy to those who have not studied mathematics / CHAP. VI. The Ptolemean System refuted. The Motions and Phases of Mercury and Venus explained.