000 00256nam a2200121Ia 4500
020 _a8121909686
082 _a003 GUP
100 _aGUPTA, P.K.
245 _aPROBLEMS IN OPERATIONS RESEARCH
260 _bS CHAND
_c2012
300 _a1202
942 _2ddc
_cB
999 _c67489
_d67489