00333nam a2200133 a 4500008004100000020001500041050001700056100001600073245004600089250001200135260000900147350000900156650003400165120416s1987    xx |||||||||||||| ||    u  a0574194576  aHB 171.5 Hey  aHeyne, Paul14aThe economic way of thinking: study guide  a5th ed.  c1987  a0.00  aECONOMICS--STUDY AND TEACHING