00259nam a2200109Ia 4500082002400000100001900024245004600043260003500089300001500124500000500139700000500144  a338.476655bB811.EC  aBradley, P. G.  aEconomics of crude petroleum productionb  aAmsterdambNorth-Hollandc1967  axiv, 149p.  a  a