Columbia subject headings:
Free trade--Mexico.
Latin America--Foreign relations--1948-1980.
Mexico--Foreign relations--1970-1988.
North American Free Trade Agreement
Harvard subject headings:
Canada. Treaties, etc. 1992 October 7.
Free trade--Mexico
Latin America--Foreign relations--1948-
Latin America--Foreign relations--1980-
Mexico--Foreign relations--1988-
Mexico--Foreign relations--1988-2000.
Princeton subject headings:
Latin America--Politics and government--1980-
Mexico--Foreign relations--United States.
Mexico--Politics and government--1988-2000.
United States--Foreign relations--Mexico.