000 00333nam a2200133Ia 4500
008 191004s9999 xx 000 0 und d
082 _a519.72
_bGUP/I
100 _aGUPTA,PK
100 _aHIRA,DS
245 0 _aIntroduction To Operation Reserch
260 _bS Chand & Company ( Pvt.) Limited ,
_c1995
300 _a454p
942 _cBK
999 _c4503
_d4503