Columbia subject headings:
Harvard subject headings:
Brazil--Boundaries.
Diplomats--Portugal--Biography.
Gusmão, Alexandre de, 1695-1753.
Portugal--Foreign relations--18th century.
Portugal--Foreign relations--Spain.
Portugal. Treaties, etc. 1750 January 13
Portugal. Treaties, etc. 1750 January 13.
Spain--Foreign relations--Portugal.
Princeton subject headings:
Brazil--Boundaries.
Diplomats--Portugal--Biography.
Gusmão, Alexandre de, 1695-1753.
Portugal--Foreign relations--18th century.
Portugal--Foreign relations--Spain.
Portugal. Treaties, etc. 1750 January 13
Spain--Foreign relations--Portugal.