English Arab oil producing nations OAPEC OAPEC Organization of Arab Petroleum Exporting Countries English Organization of Arab Petroleum Exporting Countries English English OAPEC Organization of Arab Petroleum Exporting Countries OAPEC Arab oil producing nations OAPEC OAPEC Organization of Arab Petroleum Exporting Countries Organization of Arab Petroleum Exporting Countries OAPEC Organization of Arab Petroleum Exporting Countries OAPEC Arab oil producing nations Arab oil producing nations Arab oil producing nations Organization of Arab Petroleum Exporting Countries English Organization of Arab Petroleum Exporting Countries Organization of Arab Petroleum Exporting Countries