Columbia subject headings:
Magalhães, Fernão de, 1480-1521.
Voyages around the world--History--16th century.
Harvard subject headings:
Princeton subject headings:
Discoveries in geography--Portuguese.
Magalhães, Fernão de, 1480-1521.
Portugal--Civilization.
Portugal--Colonies--Discovery and exploration.
Portugal--History--Period of discoveries, 1385-1580.
Voyages around the world--History--16th century.