ScienceDirect
2016
DOAB Directory of Open Access Books
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ScienceDirect
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OAPEN (Open Access Publishing in European Networks)
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Books at JSTOR: Open Access
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De Gruyter Brill Open Access eBooks
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Project Muse Open Access ebooks
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DOAB Directory of Open Access Books
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ScienceDirect
2006
ScienceDirect
2016
OAPEN (Open Access Publishing in European Networks)
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Books at JSTOR: Open Access
2016
Project Muse Open Access ebooks
2016