Omnibus Survey: Popular referendum, petition for a referendum and referendum;...
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No abstract available Non-probability: Quota Face-to-face interview
无可用摘要。非概率抽样：配额抽样，面对面访谈
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No abstract available Non-probability: Quota Face-to-face interview
无可用摘要。非概率抽样：配额抽样，面对面访谈