BusinessPSO earnings rise by 150 percent in half-yearly reportMuhammad AneesMarch 1, 2014March 1, 2014 by Muhammad AneesMarch 1, 2014March 1, 2014 KARACHI: Pakistan State Oil (PSO) after-tax earnings rose by 150% percent to Rs 15.8 billion as compared to Rs 6.31 billion during the same period...