Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
2,884
DataCite Metadata Store (German National Library of Science and Technology)
1,361
NOAA NCEI Environmental Data Archive (via DataONE)
874
Defense Technical Information Center: DTIC Technical Reports database
179
Unknown
120
Directory of Open Access Journals: DOAJ Articles
91
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
90
Springer Nature (via Crossref)
80
ScienceDirect (Elsevier - via Crossref)
68
LeibnizOpen (The Leibniz Association)
58
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
39
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
39
Copernicus Publications: E-Journals
38
Naval Postgraduate School: Calhoun
37
Aarhus University: Research
36
Institute for Marine Research: Brage IMR
34
NASA Technical Reports Server (NTRS)
34
ScienceDirect (Elsevier)
34
University of Bergen: Bergen Open Research Archive (BORA-UiB)
33
University of Tromsø: Munin Open Research Archive
30
University of Southampton: e-Prints Soton
29
Wiley Online Library
29
HighWire Press (Stanford University)
28
Natural Environment Research Council: NERC Open Research Archive
28
Digital.CSIC (Spanish National Research Council)
27
DataCite
24
Cambridge University Press
23
Niedersächsisches Online-Archiv NOA
22
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
21
Instituto Español de Oceanografía: e-IEO
20
Université de Nantes: HAL-UNIV-NANTES
20
Arctic Data Center (via DataONE)
19
Technical University of Denmark: DTU Orbit
19
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
18
National Institute of Polar Research Repository, Japan
17
PubMed Central (PMC)
17
University of Calgary Journal Hosting
17
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
16
Max Planck Society: MPG.PuRe
15
Institut national des sciences de l'Univers: HAL-INSU
14
Norsk Polarinstitutt: Brage NP
14
Norwegian Polar Institute: Brage NP
14
University of East Anglia: UEA Digital Repository
14
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
13
Polar Research (E-Journal)
13
University of Copenhagen: Research
13
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
12
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
12
University College London: UCL Discovery
12
GEO-LEOe-docs (FID GEO)
11
more ...