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Description and Use of a Portable Instrument, Vulgarly Known by the Name of Gunter's Quadrant. by Which Is Perform'd Most Propositions in Astronomy; to Which Is Added, the Use of Nepiar's Bones

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Description and Use of a Portable Instrument, Vulgarly Known by the Name of Gunter's Quadrant. by Which Is Perform'd Most Propositions in Astronomy; to Which Is Added, the Use of Nepiar's Bones

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