Position Finding by the Improved Sumner Method: Contrasted With the New Navigation (Marcq St. Hilaire System), and the Old Sumner Method; Together Wit

By Harold S Blackburne and Harold Sewallis Blackburne

No Synopsis Available.

• Format: Hardcover
• Language: English
• ISBN: 1371684375
• ISBN13: 9781371684372
• Release Date: August 2016
• Publisher: Wentworth Press
• Length: 128 Pages
• Weight: 0.79 lbs.
• Dimensions: 0.4" x 6.1" x 9.2"