000 00300nam a2200121Ia 4500
008 231011s9999 xx 000 0 und d
041 _aeng
100 _aDavid A.Aaker and V.Kumar
245 _aMarketing Research
250 _a2ed 19
260 _bJohn Wiley and Sons New York. -
365 _b2625
999 _c888920
_d888920