000 00280nam a2200109Ia 4500
008 190711s9999 xx 000 0 und d
082 _a620.716 L297
100 _aHACHLING.C
245 0 _aCASES IN OPERATIONS RESEARCH
260 _aONTARIO
_bRESEARCH & PUB.
_c1975
942 _cBK
_2DDC
999 _c17353
_d17353