Content Provider
Directory of Open Access Journals: DOAJ Articles
460
Unknown
343
DataCite Metadata Store (German National Library of Science and Technology)
325
Defense Technical Information Center: DTIC Technical Reports database
249
Frontiers: Figshare
212
NOAA NCEI Environmental Data Archive (via DataONE)
184
PANGAEA - Data Publisher for Earth & Environmental Science
126
MDPI Open Access Publishing
124
LeibnizOpen (The Leibniz Association)
123
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
105
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
104
Université de Nantes: HAL-UNIV-NANTES
77
University of Groningen research database
76
Wageningen UR (University & Research Centre): Digital Library
68
DRO - Deakin Research Online
66
Arctic Council Repository
64
Dryad Digital Repository (Duke University)
63
Technical University of Denmark: DTU Orbit
62
Aarhus University: Research
61
University of St Andrews: Research Portal
60
Zenodo
59
HELDA – University of Helsinki Open Repository
56
Ghent University Academic Bibliography
44
Institut national des sciences de l'Univers: HAL-INSU
43
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR
43
Arctic Data Center (via DataONE)
42
Digital.CSIC (Spanish National Research Council)
42
The University of Queensland: UQ eSpace
37
KovsieScholar Repository (University of the Free State - UFS UV)
34
Université de Bretagne Occidentale: HAL
32
LaCRIS - University of Lapland Current Research System
31
University of California: eScholarship
31
University of St Andrews: Digital Research Repository
30
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences)
29
The Royal Society: Figshare
28
University College London: UCL Discovery
23
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
22
University of Stirling: Stirling Digital Research Repository
22
University of Colorado Boulder, Law School: Scholarly Commons
21
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
20
National Research Council Canada: NRC Publications Archive
20
University of Copenhagen: Research
20
Aberdeen University Research Archive (AURA)
18
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
18
TU Delft: Institutional Repository (Delft University of Technology)
18
Portail HAL-ANR (Agence Nationale de la Recherche)
17
Université de Montpellier: HAL
17
Croatian Digital Theses Repository (National and University Library in Zagreb)
16
Digital Library of University of Maribor
16
University of Iceland: Peer Reviewed Journals
16
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