00277nam a2200109Ia 4500008004100000041000800041100003000049245002300079260003700102365000900139999001900148231011s9999    xx            000 0 und d  aeng  aDavid A.Aaker and V.Kumar  aMarketing Research  bJohn Wiley and Sons New  York. -  b1203  c889180d889180