00312nam a2200109Ia 450000500170000008000190001710000320003624500650006826000240013330000280015758300170018520260716043953.0  a03.02.03 R1735  aRamírez Carreño, Rafael  aOil producing countries have to defend their oil sovereignty  bPDVSAa[S.l.]c2006  a13 p.: col. ill.; ports  c1/8/10kJOYD