00650nab a2200181 4500 20260520002847.0 260224s2010 xxu Olson, Robert 34908 Brazil tightens its grip on Petrobras oct. 2010 21/02/2011 ; 21/02/2011 2 p. ; 29-30 Transcripción del resumen del autor. Deep-water specialist Petrobras is now further under the Brazilian government's control, after a high-cost purchase of new oil reserves, reports Robert Olson 10 Petroleum Economist 77 ARTICULO 173431 173431 0 0 0 0 241250 BAAB BAAB 2026-03-05 200051421 0 200051421 2026-03-05 16:09:33 2026-03-05 ARTICULO