000 00321nam a2200145Ia 4500
008 230912s9999 xx 000 0 und d
082 _a GUP
100 _aGupta, Prem Kumar
245 0 _aOperation Research
260 _aNEW DELHI
260 _bS.CHAND
260 _c2011
300 _axii,1418
700 _aHIRA, D.S.
999 _c44079
_d44079