00281nam a2200109Ia 4500008004100000041000800041100002100049245004100070260002400111650001500135999002100150240109s9999    xx            000 0 und d  aeng  aAckoff  Sasieni.  aFundamentals Of Opearation Research.  bWiley Eastern Ltd.   aManagement  c1019892d1019892