000 00271nam a2200133Ia 4500
020 _a8121909686
082 _a658.54 GUP
100 _aGUPTA, PREM KUMAR
245 _aOPERATIONS RESEARCH
250 _aI
260 _bS CHAND
_c2014
300 _a1498
942 _2ddc
_cB
999 _c68070
_d68070