Tables for azimuths, great-circle sailing, and reduction to the meridian: with a new and improved "Sumner" method; latitudes 90⁰ N. to 90⁰

By H S Blackburne and Harold Sewallis Blackburne

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• Format: Paperback
• Language: English
• ISBN: 9353979536
• ISBN13: 9789353979539
• Release Date: February 2020
• Publisher: Alpha Edition
• Length: 186 Pages
• Weight: 0.98 lbs.
• Dimensions: 0.4" x 8.5" x 11.0"