Columbia subject headings:
America--Discovery and exploration--Spanish.
Catalonia (Spain)--History.
Portugal--History, Naval.
Portugal--History--Period of discoveries, 1385-1580.
Spain--History, Naval.
Harvard subject headings:
America--Discovery and exploration--Spanish.
Catalonia (Spain)--History.
Portugal--History, Naval.
Portugal--History--Period of discoveries, 1385-1580.
Spain--History, Naval.
Princeton subject headings:
Navigation--Spain--History.
Spain--History--711-1516.