Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
731
DataCite Metadata Store (German National Library of Science and Technology)
139
Defense Technical Information Center: DTIC Technical Reports database
66
Unknown
49
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
37
Directory of Open Access Journals: DOAJ Articles
37
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
32
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
32
University of Bergen: Bergen Open Research Archive (BORA-UiB)
28
Institute for Marine Research: Brage IMR
25
Copernicus Publications: E-Journals
23
Université de Nantes: HAL-UNIV-NANTES
23
LeibnizOpen (The Leibniz Association)
21
Niedersächsisches Online-Archiv NOA
14
HighWire Press (Stanford University)
12
University of Tromsø: Munin Open Research Archive
12
University of St Andrews: Research Portal
11
Cambridge University Press
10
Biodiversity Heritage Library (BHL)
9
Institut national des sciences de l'Univers: HAL-INSU
9
Max Planck Society: MPG.PuRe
7
ScienceDirect (Elsevier - via Crossref)
7
Springer Nature (via Crossref)
7
University of Cambridge, Department of Earth Sciences: ESC Publications
7
Digital.CSIC (Spanish National Research Council)
6
Lund University Publications (LUP)
6
Natural Environment Research Council: NERC Open Research Archive
6
Norwegian Institute for Nature Research: Brage NINA
6
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
6
Instituto Español de Oceanografía: e-IEO
5
Oxford University Press
5
Technical University of Denmark: DTU Orbit
5
University College London: UCL Discovery
5
University of Southampton: e-Prints Soton
5
University of the Highlands and Islands: Research Database of UHI
5
MDPI Open Access Publishing
4
Polar Research (E-Journal)
4
PubMed Central (PMC)
4
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
4
Zenodo
4
Aarhus University: Research
3
Apollo - University of Cambridge Repository
3
Columbia University: Academic Commons
3
DIAL@USL-B (Université Saint-Louis, Bruxelles)
3
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources)
3
IRD (Institute de recherche pour le développement): Horizon
3
Joint Research Centre, European Commission: JRC Publications Repository
3
Magnolia press
3
NORCE vitenarkiv (Norwegian Research Centre)
3
Naval Postgraduate School: Calhoun
3
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