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