Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2,086
NOAA NCEI Environmental Data Archive (via DataONE)
625
LeibnizOpen (The Leibniz Association)
21
Defense Technical Information Center: DTIC Technical Reports database
14
Unknown
10
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
9
Directory of Open Access Journals: DOAJ Articles
6
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
5
USGS Science Data Catalog (via DataONE)
5
Université de Nantes: HAL-UNIV-NANTES
4
Digital.CSIC (Spanish National Research Council)
3
Magnolia press
3
PANGAEA - Data Publisher for Earth & Environmental Science
3
University of Bergen: Bergen Open Research Archive (BORA-UiB)
3
Copernicus Publications: E-Journals
2
DataCite
2
Instituto Español de Oceanografía: e-IEO
2
MDPI Open Access Publishing
2
Niedersächsisches Online-Archiv NOA
2
University of Cambridge, Department of Earth Sciences: ESC Publications
2
University of Tromsø: Munin Open Research Archive
2
Wiley Online Library
2
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Archives ouvertes de Paris-Saclay
1
Arctic Portal Library
1
Australian National University: ANU Digital Collections
1
BioMed Central
1
Canadian Science Publishing (via Crossref)
1
Collège de France: HAL
1
CyberLeninka (Scientific Electronic Library)
1
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
1
Dryad Digital Repository (Duke University)
1
Ghent University Academic Bibliography
1
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
1
HAL Sorbonne Université
1
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
1
Institute for Marine Research: Brage IMR
1
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
1
KU VL (Klaipėdos universitetas Virtual Library)
1
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
1
LSRC VL (Lithuanian Social Research Centre Virtual Library)
1
Lancaster University: Lancaster Eprints
1
Lund University Publications (LUP)
1
Naval Postgraduate School: Calhoun
1
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1
PUBLISSO Fachrepositorium Lebenswissenschaften (ZB MED)
1
Pensoft Publishers
1
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML)
1
Polar Research (E-Journal)
1
PubMed Central (PMC)
1
more ...