"Navigatie." . . "Nautical astronomy Social conditions 21st century Case studies United States." . . . . . . . . . . . . . "Emergency navigation find your position and shape your course at sea even if your instruments fail" . "Emergency navigation find your position and shape your course at sea even if your instruments fail"@en . . . . "Emergency navigation" . "Emergency navigation"@en . . . . "Emergency navigation : find your position and shape your course at sea even if your instruments fail" . "Livres électroniques" . . . . . . . . . "Emergency navigation : pathfinding techniques for the inquisitive and prudent mariner"@en . "Emergency navigation : pathfinding techniques for the inquisitive and prudent mariner" . . . . . "Electronic books"@en . . . . . . . . "Scheepvaart." . . . . "Electronic books." . . "TRANSPORTATION Navigation." . . "Navegació." . . "Navigation Social conditions 21st century Case studies United States." . . "Navigation." . . "Pomorska navigacija Priročniki." . .