00272nam a2200109Ia 450000500170000000800410001702000250005808200160008310000200009924500240011925000190014320240911060534.0210621s9999    xx            000 0 und d  a9789332584679 (pbk.)  a658.83bBUR  aBurns, Alvin C. 0aMarketing research   aEighth Edition