000			00348nam a2200145Ia 4500
008			210113s9999 xx 000 0 und d
020			_a9789332526471
082			_a658.403 4 NAT-O
100			_aA. M. Natarajan
245			_aOperations research
250			_a2nd
260			_bPearson Education _aNew Delhi _c2017
300			_a728
942			_cBK
999			_c54922 _d54922