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University of California: eScholarship
3
Directory of Open Access Journals: DOAJ Articles
2
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2
Copernicus Publications: E-Journals
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Newcastle University eTheses
1
Niedersächsisches Online-Archiv NOA
1
University of Canterbury, Christchurch: UC Research Repository
1
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