Columbia subject headings:
Mexico--Economic conditions--1982-1994.
Mexico--Politics and government--1970-1988.
Mexico--Relations--United States.
United States--Relations--Mexico.
Harvard subject headings:
Central America--Foreign relations--Mexico.
Mexico--Foreign economic relations.
Mexico--Foreign relations--1970-1988.
Mexico--Foreign relations--Central America.
Mexico--Foreign relations--United States.
United States--Foreign relations--Mexico.
Princeton subject headings:
Central America--Politics and government--1979-
Mexico--Foreign relations--1970-1988.
Mexico--Politics and government--1970-.