000 00277nam a2200121Ia 4500
008 241124s9999 xx 000 0 und d
100 _aGupta, Pream. Kumar
245 0 _aOperation Research
245 0 _cDr.Hira.D.S
260 _bS Chand & Co
260 _c2016
942 _cBK
999 _c18149
_d18149