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【作者(必填)】George Gilder, David Cochran Heath
【文题(必填)】The 21st Century Case for Gold
【年份(必填)】2016
【全文链接或数据库名称(选填)】https://www.amazon.com/21st-Century-Case-Gold-Information/dp/B01EVR340K/ref=sr_1_1?ie=UTF8&qid=1533725000&sr=1-1&keywords=The+21st+Century+Case+for+Gold