000 00289nam a2200121Ia 4500
008 221118b |||||||| |||| 00| 0 eng d
040 _cBGL
100 _aGupta, Prem Kumar
245 0 _aOperation Research
260 _aNew Delhi
_bS.Chand & Company
_c2012
300 _a1418p
942 _cBB
999 _c39504
_d39504