00294nam a2200109Ia 4500008004100000041000800041100003700049245002600086260003600112650001500148999002100163240109s9999    xx            000 0 und d  aeng  aSasieni N. Yaspan A. Friedman L.  aOpearations Research.  bJohn Wiley and Sons New  York.   aManagement  c1019893d1019893