000 00269nam a2200121Ia 4500
008 190516s9999 xx 000 0 und d
100 _aTAHA HAMDY A
245 0 _aOPERATION S RESEARCH 9
_bNULL
250 _a9
260 _c2013
_bPEARSON
300 _a824
942 _cBK
999 _c19436
_d19436