00401nam a2200133Ia 4500008004100000020001500041082002200056100002200078245004100100260003500141300001500176490003900191500003700230260422b        |||||||| |||| 00| 0 eng d  a0471904228  a330.0151bL473.HA  aLedermann, Walter  aMathematical methods in economicsb/  aChichester:bJohn Wiley,c1984  axix, 580p.  aHandbook of applicable Mathematics  aA Wiley Interscience publication