000			00325nam a2200133Ia 4500
008			231011s9999 xx 000 0 und d
041			_aeng
082			_a658.4034
100			_aTiwari N.K.
245			_aOperations Research[Tiwari]
260			_bPHI Learning Private Ltd. New Delhi _c2013
300			_a292
365			_b266
999			_c906624 _d906624