Columbia subject headings:
Commercial law.
Foreign trade regulation--United States.
Foreign trade regulation.
Tariff--Law and legislation.
Harvard subject headings:
Commercial law
Commercial law--United States
Export sales contracts--United States.
Export sales contracts.
Foreign trade regulation--United States.
Foreign trade regulation.
International business enterprises--Law and legislation
International business enterprises--Law and legislation--United States
Tariff--Law and legislation.
Trade regulation
Princeton subject headings: