Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
38
Arctic Data Center (via DataONE)
29
Directory of Open Access Journals: DOAJ Articles
9
Unknown
5
University of Groningen research database
4
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
3
University of Massachusetts: ScholarWorks@UMass Amherst
3
University of Washington, Seattle: ResearchWorks
3
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
2
Australian National University: ANU Digital Collections
2
Charles University CU Digital repository
2
Digital Repository @ Iowa State University
2
Rice University: Digital Scholarship Archive
2
University of Alaska: ScholarWorks@UA
2
University of Calgary Journal Hosting
2
University of Maine, School of Law: Digital Commons
2
University of Potsdam: publish.UP
2
Wiley Online Library (via Crossref)
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
Zenodo
2
Aarhus University: Research
1
Arctic Portal Library
1
Brill (via Crossref)
1
Claremont Colleges: Scholarship@Claremont
1
Clark University: Clark Digital Commons
1
Copernicus Publications: E-Journals
1
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
1
Defense Technical Information Center: DTIC Technical Reports database
1
Digital Commons University of South Florida (USF)
1
Digital.CSIC (Spanish National Research Council)
1
Dryad Digital Repository (Duke University)
1
HELDA – University of Helsinki Open Repository
1
Harvard University: DASH - Digital Access to Scholarship at Harvard
1
Ike Skelton Combined Arms Research Library (CARL) Digital Library
1
Institute for Marine Research: Brage IMR
1
KHALSA PUBLICATIONS
1
MDPI Open Access Publishing
1
NOAA NCEI Environmental Data Archive (via DataONE)
1
Naval Postgraduate School: Calhoun
1
Niedersächsisches Online-Archiv NOA
1
Norwegian Institute for Water research: NIVA Open Access Archive (Brage)
1
Oxford University Press
1
Peking University Institutional Repository (PKU IR)
1
Portland Public Library: Digital Commons
1
PuSH - Publikationsserver des Helmholtz Zentrums München
1
PubMed Central (PMC)
1
The College of Wooster: Open Works
1
The University of Adelaide: Digital Library
1
USGS Science Data Catalog (via DataONE)
1
University of Cambridge, Department of Earth Sciences: ESC Publications
1
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