Gallup Poll, May 1975

Abstract copyright UK Data Service and data collection copyright owner. Gallup political polls are conducted on a regular basis several times each month by Social Surveys...

本摘要的版权归英国数据服务中心（UK Data Service）及该数据集采集的版权所有者所有。盖洛普（Gallup）政治民意调查由社会调查机构（Social Surveys）每月定期开展数次。