00317nam a2200121Ia 4500008004000000082001800040100002100058245003100079250000500110260004200115300001100157650002700168210210b1988   xxu||||| |||| 00| 0 eng d  a510.2433 DEVM  aDEVAIRAKKAM (S).  aMathematical methods. Ed.2  a  aTirunelvelibJothi Publicationsc1988  a284,56  aMathematical economics