00258nam a2200109Ia 4500082002400000100001900024245005200043260002900095300001400124500000500138700000500143  a338.476655bF829.EP  aFrankel, P. H.  aEssentials of petroleumba key to oil economics  aLondonbFrank Cassc1969  axv, 188p.  a  a