Health of the planet survey
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资源简介：
<p>The Health of the Planet (HOP) survey was coordinated by the George H. Gallup International Institute and conducted by members of the worldwide network of Gallup affiliates.&nbsp;The HOP survey included a wide range of questions dealing with perceptions of the seriousness of environmental problems and support for environmental protection.&nbsp;</p>
创建时间：
2010-01-29
