Columbia subject headings:
Gama, Vasco da, 1469-1524.
Indian Ocean Region--Civilization--Portuguese influences.
Indian Ocean Region--Relations--Portugal.
Portugal--Foreign relations--To 1580.
Portugal--Relations--Indian Ocean Region.
Harvard subject headings:
Gama, Vasco da, 1469-1524--Congresses.
Indian Ocean Region--Civilization--Portugese influences.
Indian Ocean Region--Civilization--Portuguese influences.
Indian Ocean Region--Relations--Portugal--Congresses.
Portugal--Relations--Indian Ocean Region--Congresses.
Princeton subject headings:
Gama, Vasco da, 1469-1524.
Indian Ocean Region--Civilization--Portugese influences.
Indian Ocean Region--Relations--Portugal.
Portugal--Foreign relations--To 1580.
Portugal--Relations--Indian Ocean Region.