Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--America.
Free trade--America
Latin America--Foreign economic relations--United States.
Produce trade--America.
United States--Foreign economic relations--Latin America.
Princeton subject headings:
Agriculture--Economic aspects--America.
Free trade--America.
Latin America--Foreign economic relations--United States.
Produce trade--America.
United States--Foreign economic relations--Latin America.