000			00352nam a2200145Ia 4500
008			210209s9999||||xx |||||||||||||| ||und||
020			_a978812190281
082			_a1.424 _bGU-O
100			_aGupta, P K
245		0	_aOperations research _c P KGupta
250			_a7th ed.
260			_aNew Delhi _bS. Chand _c2018
300			_axii; 1498p
942			_cREF
999			_c67978 _d67978