【题 名】： Political Ideals and a political science for policy
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            【全文链接】：http://www.jstor.org/pss/25046108?searchUrl=%2Faction%2FdoBasicSearch%3FQuery%3DPolitical%2BScience%26gw%3Djtx%26prq%3DPrinciples%2Bof%2BPolitical%2BScience%26hp%3D10%26so%3Drel%26wc%3Don&Search=yes