000 00351nam a2200157Ia 4500
001 1562
008 141107s9999 xx 000 0 und d
050 _aHD 20.5.D8
100 _aDuckworth W
245 2 _aA Guide To Operational Research
250 _a1
260 _aLondon
260 _bMethuen
260 _c1965
650 _aOperations Research
999 _c28074
_d28074