00291nam a2200109Ia 4500082002300000100006500023245004200088260003500130300000600165500000500171700000500176  a333.79025bUn58.YW  aUnited Nations. Economic and Social Affairs, Department of-.  aYearbook of world enegry statisticsb  aNew YorkbUnited Nationsc1981  a   a  a