Content Provider
Unknown
15
DataCite Metadata Store (German National Library of Science and Technology)
12
Defense Technical Information Center: DTIC Technical Reports database
12
Directory of Open Access Journals: DOAJ Articles
9
Research Workspace (via DataONE)
8
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
6
MDPI Open Access Publishing
4
University of St Andrews: Research Portal
4
Utah State University: DigitalCommons@USU
4
ArXiv.org (Cornell University Library)
3
HELDA – University of Helsinki Open Repository
3
University of Massachusetts: ScholarWorks@UMass Amherst
3
Aarhus University: Research
2
Carleton University's Institutional Repository
2
MSpace at the University of Manitoba
2
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
2
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
2
Peking University Institutional Repository (PKU IR)
2
University of St Andrews: Digital Research Repository
2
University of Victoria (Canada): UVicDSpace
2
Zenodo
2
Apollo - University of Cambridge Repository
1
Arctic Data Center (via DataONE)
1
Arizona State University: ASU Digital Repository
1
BioMed Central
1
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1
Carolina Digital Repository (UNC - University of North Carolina)
1
Cornell University: eCommons@Cornell
1
Curtin University: espace
1
DRO - Deakin Research Online
1
Digital Commons University of South Florida (USF)
1
Digital.CSIC (Spanish National Research Council)
1
Dryad Digital Repository (Duke University)
1
Florida Online Journals (FloridaOJ)
1
Frontiers: Figshare
1
Geological Society of London: Figshare
1
Ghent University Academic Bibliography
1
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
International Development Research Centre: IDRC Digital Library
1
Journals@UC (University of Cincinnati)
1
Lund University Publications (LUP)
1
Magnolia press
1
Smithsonian Institution: Figshare
1
Technical University of Crete: Institutional Repository
1
The University of Adelaide: Digital Library
1
The University of Arizona: UA Campus Repository
1
The University of Queensland: UQ eSpace
1
Theses Canada/Thèses Canada (Library and Archives Canada)
1
more ...