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American heritage and history repository dedicated to promoting innovation, research, and discovery in science.
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About AllExperts: expert guidance from real people helping to answer your questions ... Allexperts.com is the oldest & largest free Q&A service on the Internet. ...
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Produced by BIOSIS, it offers resources and links for the life sciences information community. Browse the directory by organism, scientific subject, or geography.
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Independent U.S. government agency responsible for promoting science and engineering through programs that invest money in research and education projects in science and engineering.
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qiji.cn. arxiv.org. answers.com ... qiji.cn. arxiv.org. answers.com. 豆瓣小组: 奇迹 奇迹翻译计划 自然科学史. 集智俱乐部. 百科资料: 医疗 饮食 理财 旅游 艺术 历史 文学 军事 生活 科学 ...
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International collaborative effort to enhance the dissemination of research in economics. ... To contact us: email repec@repec.org. Recent activity ...
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Children's version of National Geographic, including current events and news stories about animals, geography, the Earth, and more. Find games, activities, experiments, homework help, kids news, and more.
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