National Opinion Polls National Political Surveys; July 1968
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Abstract copyright UK Data Service and data collection copyright owner. The NOP National Political Surveys were designed principally to ascertain public opinion on political...
本数据集的摘要版权归英国数据服务中心（UK Data Service）及本次数据采集的版权所有者共同所有。NOP国家政治调查（NOP National Political Surveys）主要旨在探明公众在政治领域的舆论态度……
