000 00279nam a2200109Ia 4500
008 230302s9999 xx 000 0 und d
082 _a519.7TIW
100 _aTIWARI (N.K.)/ SHANDILYA (Shishir. K)
245 _aOperations Research
260 _aNew Delhi
_b PHI
365 _cRS
999 _c150252
_d150252