000 00342nam a2200157Ia 4500
008 230915s9999 xx 000 0 und d
082 _a510.73 GUP
100 _aGupta, P K
245 0 _aOperation Research
250 _aV
260 _aNEW DELHI
260 _bS.CHAND
260 _c2009
300 _axii,1395
650 _aMathematics
999 _c159587
_d159587