Countries in the Organization of the Petroleum Exporting Countries hold about 80% of the world#39;s proven oil reserves, most of which is concentrated among Middle Eastern members.
Countries in the Organization of the Petroleum Exporting Countries hold about 80% of the world#39;s proven oil reserves, most of which is concentrated among Middle Eastern members. Countries in the Organization of the Petroleum Exporting Countries hold about 80% of the world#39;s proven oil reserves, most of which is concentrated among Middle Eastern members. Moneycontrol Latest News Read More