Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
7,833
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
31
NOAA NCEI Environmental Data Archive (via DataONE)
14
Zenodo
13
USGS Science Data Catalog (via DataONE)
5
Directory of Open Access Journals: DOAJ Articles
4
Kew Research Repository
4
University of Washington, Seattle: Digital Collections
4
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
3
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
2
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
2
Colecciones digitales - Biblioteca Virtual del Banco de la República
2
David Rumsey Historical Map Collection (Cartography Associates)
2
Defense Technical Information Center: DTIC Technical Reports database
2
Digital.CSIC (Spanish National Research Council)
2
IEDA: EarthChem Library (via DataONE)
2
Inta Digital (ID - Instituto Nacional de Tecnología Agropecuaria)
2
Joint Research Centre, European Commission: JRC Publications Repository
2
University of California: eScholarship
2
University of Florida: Digital Library Center
2
University of Nebraska-Lincoln: DigitalCommons@UNL
2
Unknown
2
Vrije Universiteit Amsterdam (VU): Research Portal
2
Washington State University: WSU Libraries Digital Collections
2
ASI Research Portal (Arkansas Studies Institute Catalog)
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Cambridge University Press (via Crossref)
1
CentAUR: Central Archive at the University of Reading
1
Copernicus Publications: E-Journals
1
Cornell University: eCommons@Cornell
1
CyberLeninka (Scientific Electronic Library)
1
Dialnet - Portada de revistas (Universidad de La Rioja)
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Hathi Trust Digital Library
1
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
1
Jultika - University of Oulu repository
1
LaCRIS - University of Lapland Current Research System
1
Lancaster University: Lancaster Eprints
1
Lincoln University (New Zealand): Lincoln U Research Archive
1
MDPI Open Access Publishing
1
MacSphere (McMaster University)
1
Magnolia press
1
NASA Technical Reports Server (NTRS)
1
NOVA: The University of Newcastle Research Online (Australia)
1
Niedersächsisches Online-Archiv NOA
1
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1
Ohio State University (OSU): Knowledge Bank
1
Oxford University Press (via Crossref)
1
Periódicos Científicos da UFRGS (Universidade Federal do Rio Grande do Sul)
1
RePEc (Research Papers in Economics)
1
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