NIPO weekpeilingen 1968 - weekberichten
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No data, only the results of this year's weekly public opinion polls in the Netherlands are available. See the directory 'Documentatie'. Samples were drawn from the Dutch...
本次无原始数据集，仅可获取本年度荷兰周度民意调查的相关结果。详见"Documentatie"目录。样本抽取自荷兰……
