000 00234nam a2200109Ia 4500
020 _a9788120329287
082 _a658.4034
100 _aPANNEERSELVAM, R.
245 _aOPERATING RESEARCH
260 _aNEW DELHI
_b PHI
_c2011
942 _cBK
999 _c5390
_d5390