Terrestrial Navigation - Latitude And Longitude - Sudoku Edition - Volume 1: Carry On 6"×9" Sudoku Puzzle Book For Mariners, Sailors, Seafarers And ... With Basic Position Coordinates Calculations
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Terrestrial Navigation - Latitude And Longitude - Sudoku Edition - Volume 1: Carry On 6"×9" Sudoku Puzzle Book For Mariners, Sailors, Seafarers And ... With Basic Position Coordinates Calculations