00332    a2200121   4500020001500000082001900015100002300034245006700057250000900124260004000133300002300173650001400196  a0070588880  a330.01519bDOW  aDowling, Edward T.  aMathematical economicsbtheory and problems of introduction to  a3rd   aNew YorkbMcGraw - Hillc1980g1980  aviii, 523p.c28cm.  aECONOMICS