Columbia subject headings:
Harvard subject headings:
Marine terminals--Mexico--Topolobampo--Congresses.
Mexico, North--Commerce--Pacific Area--Congresses.
Mexico, North--Commerce--United States--Congresses.
Pacific Area--Commerce--Mexico, North--Congresses.
United States--Commerce--Mexico, North--Congresses.
Princeton subject headings:
Mexico--Foreign economic relations--Pacific Area.
Pacific Area--Foreign economic relations--Mexico.
Ports of entry--Mexico--Topolobampo.
Topolobampo (Mexico)--Foreign economic conditions.