000 00259nam a2200121Ia 4500
020 _a8121941008
082 _a003 GUP
100 _aGUPTA, P.K.
245 _aINTRODUCTION TO OPERATION RESEARCH
260 _bS CHAND
_c2012
300 _a1195
942 _2ddc
_cB
999 _c67488
_d67488