National Opinion Polls National Political Surveys; February 1970
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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...
本摘要的版权归属英国数据服务中心（UK Data Service）及数据采集项目的版权所有者。NOP国家政治调查（NOP National Political Surveys）最初主要旨在探明公众在政治领域的舆论……
