Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
2,088
NOAA NCEI Environmental Data Archive (via DataONE)
871
Arctic Data Center (via DataONE)
184
Defense Technical Information Center: DTIC Technical Reports database
160
DataCite Metadata Store (German National Library of Science and Technology)
142
LeibnizOpen (The Leibniz Association)
116
Unknown
48
Directory of Open Access Journals: DOAJ Articles
38
Aarhus University: Research
35
University of Copenhagen: Research
22
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
18
University of Calgary Journal Hosting
18
Australian National University: ANU Digital Collections
15
University of California: eScholarship
13
University of Groningen research database
12
Université de Nantes: HAL-UNIV-NANTES
12
MDPI Open Access Publishing
11
University of St Andrews: Research Portal
10
University College London: UCL Discovery
9
Apollo - University of Cambridge Repository
8
HELDA – University of Helsinki Open Repository
8
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
8
Peking University Institutional Repository (PKU IR)
8
Utrecht University Repository
8
CESSDA DC Data Catalogue (Consortium of European Social Science Data Archives)
7
Columbia University: Academic Commons
7
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
7
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
6
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
6
University of Bristol: Bristol Research
6
Collège de France: HAL
5
Digital.CSIC (Spanish National Research Council)
5
Ghent University Academic Bibliography
5
Imperial College London: Spiral
5
Nicolaus Copernicus University (UMK) Torun: RUM@K
5
Dryad Digital Repository (Duke University)
4
Hathi Trust Digital Library
4
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
4
Institut national des sciences de l'Univers: HAL-INSU
4
University of North Texas: UNT Digital Library
4
University of Windsor, Ontario: Scholarship at UWindsor
4
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste)
4
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
3
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
3
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
3
GEO-LEOe-docs (FID GEO)
3
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
3
LaCRIS - University of Lapland Current Research System
3
ORNL DAAC (via DataONE)
3
Scientific Periodicals of Ukraine (Ukrainian Research and Academic Network)
3
more ...