Determination of secondary meridians by electric telegraph; Personal equation
Contributors: Green, F. M. b. 1835.; Holden, Edward Singleton, 1846-1914.
Series: Hydrographic Office Practical Papers No. 5
Publisher: [s.n.]
Published: 1876
Place of publication: Washington, D.C
Format: Microform
Subjects: Astronomy -- Observations.; Personal equation.