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℗ʻ and 63℗ʻ of Declination, latitude 60℗ʻ N. to 60℗ʻ S.

Bibliographic Details

Corporate Author:	United States. Hydrographic Office
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1933.
Subjects:	Hydrography. Navigation. Astronomy. Weights and measures.
Online Access:	Electronic resource (PDF)