ORVESTO 1989-II
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In the mid-1960s, Testologen AB in collaboration with a group of advertisers, introduced a new way of investigation, where data about the target groups - socio-economic data,...
20世纪60年代中期,Testologen AB联合一众广告商推出了一种全新的调研方法,该方法的调研数据围绕目标群体展开,涵盖社会经济数据……



