00418nam a2200121Ia 4500008004100000040001700041082002300058100001700081245006500098260002900163300001400192650009000206190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta665.5bF829E  aFrankel, P H 0aEssentials of petroleumba key to oil economicscP H Frankel  aLondonbFrank Cassc1969  axv, 188p.  aPetroleum; Petroleum industry and trade; Elasticity (Economics); Petroleum refineries