Columbia subject headings:
Harvard subject headings:
Mexico--Foreign relations administration--History--21st century.
Mexico--Foreign relations--1988-2000.
Mexico--Foreign relations--2000-
Mexico. Secretaría de Relaciones Exteriores.
Princeton subject headings:
Mexico--Foreign relations administration--History--21st century.
Mexico--Foreign relations--1988-2000.
Mexico--Foreign relations--2000-
Mexico. Secretaría de Relaciones Exteriores