Columbia subject headings:
Harvard subject headings:
General Agreement on Tariffs and Trade (Organization)--Bibliography--Catalogs.
Tariff--Law and legislation--Bibliography--Catalogs.
Tariff--Law and legislation--Indexes.
Princeton subject headings:
General Agreement on Tariffs and Trade (Organization)--Bibliography.
Tariff--Law and legislation--Bibliography.
Tariff--Law and legislation--Indexes.