查看完整版本: two website for searching literature

two website for searching literature

刚刚找到的两个网址，可以免费查文献，希望对大家有用
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G|1RA"\ [url]http://www.doaj.org/[/url]
B/h~-Do.`{ X [url]http://www.bartelby.com/[/url]