Columbia subject headings:
Communication and traffic--America.
Latin America--Commerce--United States.
Latin America--Foreign relations--United States.
United States--Commerce--Latin America.
United States--Foreign relations--Latin America.
Harvard subject headings:
Communication and traffic--America.
Latin America--Commerce--United States
Latin America--Foreign relations--United States
United States--Commerce--Latin America
United States--Foreign relations--Latin America
Princeton subject headings: