000 00324nam a2200121Ia 4500
008 190829s9999 xx 000 0 und d
082 _a658.403 4
_bGUP/OP
100 _aPREMKUMAR GUPTA
100 _aHIRA, D.S.
245 0 _aOPERATIONS RESEARCH
260 _bS.Chand and Company Ltd., New Delhi
_aNew Delhi
_c2003
942 _cBK
999 _c5307
_d5307