00299nam a2200121Ia 4500008004100000041000800041100003000049245002300079250001100102260003700113365000800150999001900158231011s9999    xx            000 0 und d  aeng  aDavid A.Aaker and V.Kumar  aMarketing Research  a3ed 20  bJohn Wiley and Sons New  York. -  b175  c889261d889261