Columbia subject headings:
Countertrade--United States.
Countertrade.
Export trading companies--Law and legislation--United States.
Export trading companies--Law and legislation.
Harvard subject headings:
Countertrade--United States.
Countertrade.
Export trading companies--Law and legislation--United States.
Export trading companies--Law and legislation.
Princeton subject headings:
Countertrade--United States.
Countertrade.
Export trading companies--Law and legislation--United States.
Export trading companies--Law and legislation.