Pornpen Vora-Sittha. (2008) A Model to Estimate the Effects of Tariff Reduction by Chile on Thai Exports and Imports. <i>NIDA Development Journal</i>, <i>48</i>(2), 25-48.Pornpen Vora-Sittha. "A Model to Estimate the Effects of Tariff Reduction by Chile on Thai Exports and Imports". NIDA Development Journal 48 (2008):25-48.Pornpen Vora-Sittha. A Model to Estimate the Effects of Tariff Reduction by Chile on Thai Exports and Imports. National Institute of Development Administration:ม.ป.ท. 2008.