Columbia subject headings:
General Agreement on Tariffs and Trade (Organization)
North American Free Trade Agreement
Tariff preferences.
Uruguay Round (1987-1994)
Harvard subject headings:
General Agreement on Tariffs and Trade (Organization)
North American Free Trade Agreement
Tariff preferences.
Uruguay Round (1987-1994)
Princeton subject headings:
General Agreement on Tariffs and Trade (Organization)
North American Free Trade Agreement
Tariff preferences.
Uruguay Round (1987- )