Open Access of COVID-19 related publications in the first quarter of 2020: a preliminary study based in PubMed
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https://zenodo.org/record/3826037
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资源简介：
Underlying data of the article: "Open Access of COVID-19 related publications in the first quarter of 2020: a preliminary study based in PubMed". Version 1 and Version 2 (after Unpaywall update).
Data was analysed using Unpaywall and OpenRefine.
创建时间：
2022-11-15
