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・nlm(米国国立医学図書館:national library of medicine )内の、ncbi(国立生物科学情報センター:national center for biotechnology. Pubmed® comprises more than 40 million citations for biomedical literature from medline, life science journals, and online books. Pubmed 解説 米国国立医学図書館（nlm) がインターネット上で無料で提供している，文献検索データベースです。 世界中の医学文献が検索できる.
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Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. ...
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