Columbia subject headings:
Central America--Economic conditions--History--Sources.
Central America--Economic conditions--Sources.
Central America--Economic integration--History--Sources.
Central America--Economic policy--History--Sources.
Central America--Economic policy--Sources.
Central America--Foreign economic relations--United States--History--Sources.
Investments, American--Central America--History--Sources.
Investments, Foreign--Central America--History--Sources.
United States--Foreign economic relations--Central America--History--Sources.
Harvard subject headings:
Central America--Foreign economic relations--United States.
United States--Foreign economic relations--Central America.
Princeton subject headings:
Central America--Foreign economic relations--United States.
United States--Foreign economic relations--Central America.