Open access books

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Booksc.org

Pdfdrive.com

Intechopen.com

Hindawi.com

Directory of Open Access Books (DOAB)

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Open access journals

WorldWideScience.org

Springeropen journals

African journals online(AJOL)

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Journals 

Cambridge University Press
Research4life.org (AGORA, OARE, GOALI)
University of Chicago Journals
Wiley Online Library
Oxford University Press Journals