Columbia subject headings:
Foreign trade regulation--Congresses.
Foreign trade regulation--United States--Congresses.
Foreign trade regulation--United States.
Foreign trade regulation.
General Agreement on Tariffs and Trade (Organization)
Tariff--Law and legislation--Congresses.
Tariff--Law and legislation--United States--Congresses.
Tariff--Law and legislation--United States.
Tariff--Law and legislation.
United States--Commercial policy--Congresses.
Harvard subject headings:
Foreign trade regulation--United States.
Foreign trade regulation.
General Agreement on Tariffs and Trade (Organization)
Tariff--Law and legislation--United States.
Tariff--Law and legislation.
United States--Commercial policy.
Princeton subject headings:
Foreign trade regulation--United States.
Foreign trade regulation.
General Agreement on Tariffs and Trade (Organization)
Tariff--Law and legislation--United States.
Tariff--Law and legislation.