Including academic papers, dissertations and research reports of the Hong Kong University of Science and Technology, the full text can be obtained free of charge.

2. International and regional digital collections of the University of California

University of California International and Regional Digital Collection Research Project. EScholarshipRepository mainly provides more than 65,438+00,000 published journal papers, unpublished research manuscripts, conference documents and other linked publications, all of which can be read for free.

3. Cambridge University Institutional Repository

This website is maintained by Cambridge University Library and University Computing Service Center, and provides electronic resources related to Cambridge University, such as periodicals, academic papers and dissertations.

4. Database of Joint Journals of Developing Countries

Non-profit electronic publishing service organization, providing full-text of various open access periodicals in developing countries (such as Brazil, Cuba, India, Indonesia, Kenya, South Africa, Uganda, Zimbabwe, etc.). ).

5. University of Michigan Thesis Library.

The full text of more than 20,000 periodical papers, technical reports, reviews and other documents in the University of Michigan Thesis Library. Including art, biology, social science, resources and environmental science and other related papers, as well as doctoral and master's papers. Marked as open can open the full text.