Columbia subject headings:
Harvard subject headings:
Diplomatic and consular service, Mexican--Portugal.
Diplomatic and consular service, Portuguese--Mexico.
Mexico--Foreign relations--Portugal--Sources.
Mexico--Foreign relations--Portugal.
Portugal--Foreign relations--Mexico--Sources.
Portugal--Foreign relations--Mexico.
Princeton subject headings:
Diplomats--Mexico--Registers.
Diplomats--Portugal--Registers.
Mexico--Foreign relations--Portugal.
Portugal--Foreign relations--Mexico.