000 00270nam a2200121Ia 4500
082 _a658.4034
_bGUP
100 _aGupta, Anju.
245 _aOperations researsh
260 _aNew Delhi
_bExcel Books
_c1998
300 _a239p.
650 _aApplied Sc.
650 _aManagement
999 _c7418
_d7418