Columbia subject headings:
Discrimination--Law and legislation--Congresses.
Foreign trade regulation--Congresses.
World Trade Organization--Rules and practice--Congresses.
Harvard subject headings:
Discrimination--Law and legislation--Congresses.
Foreign trade regulation--Congresses
Non-tariff trade barriers--Law and legislation--Congresses.
Tariff--Law and legislation--Congresses.
World Trade Organization--Congresses.
World Trade Organization--Rules and practice--Congresses.
Princeton subject headings:
Discrimination--Law and legislation--Congresses.
Foreign trade regulation--Congresses.
World Trade Organization--Rules and practice.--Congresses.