Tables for Azimuths, Great-Circle Sailing, and Reduction to the Meridian, with a New and Improved "Sumner" Method: Latitudes 850 N. to 850 S., ... with Numerous Examples of Double Altitudes

by: Harold S. Blackburne · Charles Westland Paperback details (USA). ISBN: 978-1-146-19336-8 ISBN-10: 1-146-19336-X Nabu Press · 2010