000 00263nam a2200121Ia 4500
008 190516s9999 xx 000 0 und d
100 _aHEIZER J
245 0 _aOPERATION S RESEARCH
_bNULL
250 _a9
260 _c2012
_bPEARSON
300 _a762
942 _cBK
999 _c19454
_d19454