Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
53,422
Unknown
4,505
NOAA NCEI Environmental Data Archive (via DataONE)
3,629
Directory of Open Access Journals: DOAJ Articles
3,408
University of Washington, Seattle: Digital Collections
3,037
PANGAEA - Data Publisher for Earth & Environmental Science
2,516
Zenodo
2,466
Washington State University: WSU Libraries Digital Collections
2,296
David Rumsey Historical Map Collection (Cartography Associates)
2,286
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,387
PubMed Central (PMC)
1,262
ScienceDirect (Elsevier - via Crossref)
1,080
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
959
Arctic Data Center (via DataONE)
874
Wiley Online Library (via Crossref)
840
Springer Nature (via Crossref)
835
Université de Nantes: HAL-UNIV-NANTES
824
Copernicus Publications: E-Journals
721
USGS Science Data Catalog (via DataONE)
679
University of California: eScholarship
672
Research Data Australia (Australian National Data Service - ANDS)
670
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
652
Defense Technical Information Center: DTIC Technical Reports database
651
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
631
Frontiers: Figshare
602
Institut national des sciences de l'Univers: HAL-INSU
594
Wiley Online Library
577
Natural Environment Research Council: NERC Open Research Archive
567
Niedersächsisches Online-Archiv NOA
499
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
495
ScienceDirect (Elsevier)
456
LeibnizOpen (The Leibniz Association)
438
Research Workspace (via DataONE)
423
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
423
MDPI Open Access Publishing
404
CyberLeninka (Scientific Electronic Library)
403
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
380
ScholarsArchive@OSU (Oregon State University)
379
Cambridge University Press
372
University of Southampton: e-Prints Soton
363
The Seattle Public Library Special Collections Online
339
eCite UTAS (University of Tasmania)
333
HighWire Press (Stanford University)
327
Canadian Science Publishing (via Crossref)
320
Digital.CSIC (Spanish National Research Council)
317
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
299
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
276
Australian National University: ANU Digital Collections
269
Dryad Digital Repository (Duke University)
264
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
258
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