PubMed
PubMed® comprises more than 33 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
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BASE
More than 200 mio. scientfic documents from more than 8000 content providers. BASE is one of the world's most voluminous search engines for academic web resources.
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PubMedPro
PubMed中文版，显示IF
文献检索
Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验
SpringerLink
springer在线期刊和图书
CNKI学术图片库
国内第一个学术图片知识库
国家哲学社会科学文献中心
国家哲学社会科学文献中心
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