000			00327nam a2200157Ia 4500
020			_aNULL
082			_a519
100			_aGupta, P. K. / Hira, D. S.
245		0	_aOperations Research
250			_a3rd
260			_aNew Delhi _bS. Chand and Company Ltd.
300			_a1055
500			_a3437
650			_a-
942			_cBK
999			_c33097 _d33097