GfK Group: www.gfk.com
Deutsch
Surveys are the most important tool in market research. GfK Marktforschung divides survey methods into three sub-groups:
Siegfried Högl+49/ (0)911/ 395-2364siegfried.hoegl@gfk.com
Birgit Brüns+49/ (0)911/ 395-2545 birgit.bruens@gfk.com