The Sumner line of position furnished ready to lay down upon the chart by means of tables of simultaneous hour angle and azimuth of celestial bodies. : Between 27? and 63? of declination, latitude 60? N. to 60? S., by United States. Hydrographic Office et al.

Title:	The Sumner line of position furnished ready to lay down upon the chart by means of tables of simultaneous hour angle and azimuth of celestial bodies. : Between 27? and 63? of declination, latitude 60? N. to 60? S.
Author:	United States. Hydrographic Office
Author:	Collins, Elmer Beauchamp, 1877-
Author:	Littlehales, G. W. (George Washington), 1860-1943
Note:	U.S. Govt. print. off, 1933

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Subject:	Navigation -- Tables
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