GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date; No Background in Celestial Navigation Required. by David Burch
GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date; No Background in Celestial Navigation Required.
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David Burch
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GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date; No Background in Celestial Navigation Required.

David Burch with Tobias Burch

152 pages • missing pub info (view editions)

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