Columbia subject headings:
El Salvador--Foreign economic relations--United States.
Investments, American--Law and legislation--El Salvador.
Investments, Foreign--Law and legislation--United States.
United States--Foreign economic relations--El Salvador.
Harvard subject headings:
El Salvador--Foreign economic relations--United States.
Investments, American--Law and legislation--El Salvador.
Investments, Foreign--Law and legislation--United States.
United States--Foreign economic relations--El Salvador.
Princeton subject headings: