Columbia subject headings:
Mexico--Foreign relations--1970-1988--Periodicals.
Mexico--Foreign relations--1988-2000--Periodicals.
Mexico--Foreign relations--2000---Periodicals.
Harvard subject headings:
Mexico--Foreign relations--1970-1988--Periodicals.
Mexico--Foreign relations--1988-2000--Periodicals.
Mexico--Foreign relations--2000---Periodicals.
Princeton subject headings:
Mexico--Foreign relations--1970-1988--Periodicals.
Mexico--Foreign relations--1988---Periodicals.
Periodicals.