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7 sites

DOAJ 开放获取期刊目录

A vetted directory of open-access journals

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PLOS

A pioneer of open-access publishing

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frontiersin.org

Frontiers

A multidisciplinary family of open-access journals

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MDPI

An open-access publisher with very broad coverage

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Nature 开放获取

Free-to-read articles from Nature journals

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PNAS

The US national academy's interdisciplinary journal

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DOAB 开放获取图书目录

A gateway to free scholarly monographs

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