Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
536
NOAA NCEI Environmental Data Archive (via DataONE)
447
Zenodo
25
Unknown
20
Directory of Open Access Journals: DOAJ Articles
19
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
12
Arctic Data Center (via DataONE)
12
Defense Technical Information Center: DTIC Technical Reports database
11
University of Calgary Journal Hosting
11
NASA Technical Reports Server (NTRS)
9
PANGAEA - Data Publisher for Earth & Environmental Science
9
Aarhus University: Research
6
USGS Science Data Catalog (via DataONE)
6
CyberLeninka (Scientific Electronic Library)
4
Knowledge Network for Biocomplexity (via DataONE)
4
MDPI Open Access Publishing
4
Oxford University Press (via Crossref)
4
ScholarsArchive@OSU (Oregon State University)
4
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3
Cambridge University Press
3
Copernicus Publications: E-Journals
3
HighWire Press (Stanford University)
3
Niedersächsisches Online-Archiv NOA
3
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
3
PubMed Central (PMC)
3
ScienceDirect (Elsevier - via Crossref)
3
Wiley Online Library
3
Wiley Online Library (via Crossref)
3
Xiamen University Institutional Repository
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Canadian Science Publishing (via Crossref)
2
Dryad Digital Repository (Duke University)
2
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
2
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
2
LSU Digital Commons (Louisiana State University)
2
Natural Environment Research Council: NERC Open Research Archive
2
University of Alaska: ScholarWorks@UA
2
University of Miami: Digital Collections
2
University of Nebraska-Lincoln: DigitalCommons@UNL
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
AAAS Resource Center (American Association for the Advancement of Science)
1
Antiquity (E-Journal - via Crossref)
1
Apollo - University of Cambridge Repository
1
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS)
1
Arctic Institute of North America (via Crossref)
1
Arctic Portal Library
1
Cambridge University Press (via Crossref)
1
Canadian Science Publishing
1
DSpace@MIT (Massachusetts Institute of Technology)
1
Digital Repository @ Iowa State University
1
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