000 00331nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aP.K.Gupta
245 0 _aOperations Research
250 _a5th Ed
260 _aNew Delhi
260 _bSultan Chand & Sons
260 _c1990
650 _aOperations Research
942 _cBK
999 _c13925
_d13925