Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,716
LeibnizOpen (The Leibniz Association)
61
Unknown
25
University of California: eScholarship
24
Directory of Open Access Journals: DOAJ Articles
18
Copernicus Publications: E-Journals
15
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
11
Natural Environment Research Council: NERC Open Research Archive
11
Niedersächsisches Online-Archiv NOA
11
Utrecht University Repository
8
Imperial College London: Spiral
6
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4
BORIS (Bern Open Repository and Information System, University of Bern)
4
Cambridge University Press
4
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
4
NASA Technical Reports Server (NTRS)
4
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
4
The University of Maine: DigitalCommons@UMaine
4
University College London: UCL Discovery
4
eCite UTAS (University of Tasmania)
4
Australian National University: ANU Digital Collections
3
Durham University: Durham Research Online
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
Max Planck Society: MPG.PuRe
3
PubMed Central (PMC)
3
University of Bristol: Bristol Research
3
University of New Hampshire: Scholars Repository
3
University of Southampton: e-Prints Soton
3
Arctic Data Center (via DataONE)
2
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
2
Delft University of Technology: Institutional Repository
2
Durham University: Durham e-Theses
2
IEDA: US Antarctic Program Data Center (via DataONE)
2
JPL Technical Report Server
2
Lancaster University: Lancaster Eprints
2
NOVA: The University of Newcastle Research Online (Australia)
2
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
Oxford University Press
2
Repositório Científico da Universidade de Évora
2
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
2
Texas A&M University Digital Repository
2
The University of Kansas: KU ScholarWorks
2
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
2
Université de Nantes: HAL-UNIV-NANTES
2
Wageningen UR (University & Research Centre): Digital Library
2
White Rose Research Online (Universities of Leeds, Sheffield & York)
2
Wiley Online Library
2
AAAS Resource Center (American Association for the Advancement of Science)
1
ARPI - Archivio della Ricerca dell'Università di Pisa
1
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