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Электронные книги
A Treatise on Practical Astronomy: As Applied to Geodesy and Navigation
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Results of Observation with the Zenith Telescope of the Sayre Observatory from April 1, 1876, to December 27, 1893: Read April 4, 1902
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Results of Observations with the Zenith Telescope of the Sayre Observatory, from January 19, 1894, to August 19, 1895: Read Before the American Philosophical Society, October 19, 1900
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A Treatise on Practical Astronomy, as Applied to Geodesy and Navigation
Бесплатно
Results of Observations: With the Zenith Telescope of the Sayre Observatory, from April 1, 1876, to December 27, 1893
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Results of Observations with the Zenith Telescope of the Flower Astronomical Observatory: From October 1st, 1896 to August 16th, 1898
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Results of Observations with the Wharton Reflex Zenith Tube and the Zenith Telescope of the Flower Astronomical Observatory from January 9, 1904, to December 3, 1906: 1907-1915
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Results of Observations with the Zenith Telescope of the Flower Astronomical Observatory from September 6, 1898, to August 30, 1901: 1899-1905
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