000 00274nam a2200133Ia 4500
100 _aGupta &Hira
942 _cBK
654 _aResearch
245 _aOperation Research
260 _bS.Chand & C0
_aNewDelhi
_c1983
082 _a658.4
300 _a918
546 _aENGLISH
999 _c35516
_d35516