Tybout, James The effects of trade reforms on scale and technical efficiency: new evidence from Chile by James Tybout, Jaime de Melo and Vittorio Corbo - Washington, D.C. IBRD 1990 - 44p. - IBRD. Working Papers: WPS 481 . Subjects--Topical Terms: Foreign Commerce - Chile Dewey Class. No.: T39x83 T954