Position Finding by the Improved Sumner Method

Position Finding by the Improved Sumner Method : Contrasted with the New Navigation (Marcq St. Hilaire System), and the Old Sumner Method; Together with a Few Special Star Reduction and Azimuth Tables

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Product details

  • Hardback | 128 pages
  • 156 x 234 x 10mm | 358g
  • Wentworth Press
  • United States
  • English
  • black & white illustrations
  • 1371684375
  • 9781371684372