Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
672
Arctic Data Center (via DataONE)
579
Unknown
435
PANGAEA - Data Publisher for Earth & Environmental Science
378
Directory of Open Access Journals: DOAJ Articles
268
MDPI Open Access Publishing
134
NASA Technical Reports Server (NTRS)
126
Zenodo
73
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
70
Université de Nantes: HAL-UNIV-NANTES
58
Defense Technical Information Center: DTIC Technical Reports database
48
LeibnizOpen (The Leibniz Association)
40
University of Calgary Journal Hosting
33
Aix-Marseille Université: HAL
28
HAL Université Côte d'Azur
28
Université d'Avignon et des Pays de Vaucluse: HAL
28
University of California: eScholarship
25
Norwegian Polar Data Centre
21
Institut national des sciences de l'Univers: HAL-INSU
18
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
16
Theses Canada/Thèses Canada (Library and Archives Canada)
15
University of Tromsø: Munin Open Research Archive
15
Chalmers University of Technology: Chalmers research
14
MSpace at the University of Manitoba
14
International Arctic Research Center (IARC) Data Archive (via DataONE)
13
Michigan Technological University: Digital Commons @ Michigan Tech
12
Queen's University, Ontario: QSpace
12
Research Workspace (via DataONE)
12
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
12
University of North Texas: UNT Digital Library
12
Frontiers: Figshare
11
HAL Sorbonne Université
11
PRISM - University of Calgary Digital Repository
11
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML)
11
University of Colorado, Boulder: CU Scholar
11
Carolina Digital Repository (UNC - University of North Carolina)
10
Clark University: Clark Digital Commons
10
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
10
JPL Technical Report Server
10
University of Alaska: ScholarWorks@UA
10
University of Montana: ScholarWorks
10
University of Waterloo, Canada: Institutional Repository
10
Apollo - University of Cambridge Repository
9
Dryad Digital Repository (Duke University)
9
University College London: UCL Discovery
9
University of Maryland: Digital Repository (DRUM)
9
University of Nebraska-Lincoln: DigitalCommons@UNL
9
University of Victoria (Canada): UVicDSpace
9
uO Research (University of Ottawa - uOttawa)
9
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
8
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