Columbia subject headings:
Canada--Foreign economic relations--United States.
Canada--Foreign relations--United States.
Mexico--Foreign economic relations--United States.
Mexico--Foreign relations--United States.
North American Free Trade Agreement
United States--Foreign economic relations--Canada.
United States--Foreign economic relations--Mexico.
United States--Foreign relations--Canada.
United States--Foreign relations--Mexico.
Harvard subject headings:
Canada--Foreign economic relations--United States.
Canada--Foreign relations--United States.
Mexico--Foreign economic relations--United States.
Mexico--Foreign relations--United States.
North American Free Trade Agreement
United States--Foreign economic relations--Canada.
United States--Foreign economic relations--Mexico.
United States--Foreign relations--Canada.
United States--Foreign relations--Mexico.
Princeton subject headings:
Canada--Foreign economic relations--United States.
Canada--Foreign relations--United States.
Mexico--Foreign economic relations--United States.
Mexico--Foreign relations--United States.
North American Free Trade Agreement
United States--Foreign economic relations--Canada.
United States--Foreign economic relations--Mexico.
United States--Foreign relations--Canada.
United States--Foreign relations--Mexico.