Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
608
DataCite Metadata Store (German National Library of Science and Technology)
347
Directory of Open Access Journals: DOAJ Articles
216
Unknown
169
Copernicus Publications: E-Journals
119
Natural Environment Research Council: NERC Open Research Archive
112
Cambridge University Press
83
Niedersächsisches Online-Archiv NOA
82
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
78
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
76
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
65
Digital.CSIC (Spanish National Research Council)
63
LeibnizOpen (The Leibniz Association)
60
eCite UTAS (University of Tasmania)
57
Université de Nantes: HAL-UNIV-NANTES
42
Springer Nature (via Crossref)
37
PubMed Central (PMC)
35
University of Groningen research database
33
University of Southampton: e-Prints Soton
32
Institut national des sciences de l'Univers: HAL-INSU
28
University of Tasmania: UTas ePrints
25
Wiley Online Library (via Crossref)
25
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
23
MDPI Open Access Publishing
23
Magnolia press
23
National Institute of Polar Research Repository, Japan
23
ScienceDirect (Elsevier - via Crossref)
23
University of East Anglia: UEA Digital Repository
21
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
18
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
18
DIAL@USL-B (Université Saint-Louis, Bruxelles)
18
Defense Technical Information Center: DTIC Technical Reports database
18
Ghent University Academic Bibliography
18
University of St Andrews: Research Portal
17
Wageningen UR (University & Research Centre): Digital Library
17
University of Bergen: Bergen Open Research Archive (BORA-UiB)
16
DIAL@UCLouvain (Université catholique de Louvain)
15
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
15
Max Planck Society: MPG.PuRe
14
Apollo - University of Cambridge Repository
13
HAL Sorbonne Université
13
HighWire Press (Stanford University)
13
Northumbria University, Newcastle: Northumbria Research Link (NRL)
12
Scientia Marina (E-Journal)
12
Caltech Authors (California Institute of Technology)
11
University of Pretoria: UPSpace
11
Wiley Online Library
11
Zenodo
11
Instituto Español de Oceanografía: e-IEO
10
KU Leuven: Lirias
10
more ...