00521nam a2200145Ia 4500008004100000010001300041040001700054082002500071100002100096245010900117260004200226300001500268440003500283650005700318190328s9999||||xx |||||||||||||| ||und||  a62-16237  aNITILcNITIL  221sta338.522bM117P  aMac Avoy, Paul W 0aPrice formation in natural gas fieldsba study of competition, monopsony and regulationcPaul W Mac Avoy  aNew HavenbYale Unversity Pressc1962  axix, 281p.  aYale studies in economics; 14)  aPrice formation (Va and W Va); Gas fields; Marketing