000 00239nam a2200109Ia 4500
008 220709s9999 xx 000 0 und d
100 _aYADAV,S.R.
245 0 _aOPERATIONS RESEARH
260 _bMC-GRAW HILL
300 _a691
942 _cDBK
999 _c81492
_d81492