TY - BOOK ED - United Sates General Accounting Office (GAO) TI - South American oil: marginal producers not a likely source for increased U.S. imports U1 - 333.823 PY - 1992/// CY - Washington PB - GAO KW - PetrĂ³leo KW - Industria del PetrĂ³leo KW - Estados Unidos N1 - 04567; Results in brief. Limited South American oil exports to the United States. Increased oil production. Recent petroleum - related invesment reforms. Scope and methodology. ER -