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USA - Gebrauchszolltarif
Fraedrich, Dieter, (1999)
Pitfalls in the use of ad valorem equivalent representations of the trade impacts of domestic policies
Whalley, John, (2005)
Preferences, rent destruction and multilateral liberalisation: The building block effect of CUSFTA
Ketterer, Tobias, (2012)
Tariff preferences for developing countries existing and proposed arragements
Reeves, George C., (1971)