Content Provider
WikiBooks - Open-content textbooks
75
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
66
Biodiversity Heritage Library (BHL)
48
Unknown
31
Cambridge University Press
30
Wiley Online Library
28
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
16
Texas A&M University Digital Repository
10
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
9
Australian National University: ANU Digital Collections
9
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
9
OpenAgrar (OA)
9
David Rumsey Historical Map Collection (Cartography Associates)
8
Springer Nature
8
USRA Houston Repository (Universities Space Research Association)
8
Oxford University Press
7
University of Southampton: e-Prints Soton
7
DataCite Metadata Store (German National Library of Science and Technology)
6
University of Otago: OUR Heritage (Otage University Research)
6
GEO-LEOe-docs (FID GEO)
5
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
5
University of Tasmania: UTas ePrints
5
Informa
4
Lund University Publications (LUP)
4
UNESDOC - UNESCO Digital Library
4
University of Copenhagen: Research
4
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3
Informa (via Crossref)
3
JSTOR
3
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
3
Open Research Library
3
Oxford University Press (via Crossref)
3
University of Bristol: Bristol Research
3
University of Groningen research database
3
Université de Nantes: HAL-UNIV-NANTES
3
ARPI - Archivio della Ricerca dell'Università di Pisa
2
Arctic Portal Library
2
DataCite
2
De Gruyter
2
I-Revues (E-Journals, INIST-CNRS)
2
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
2
Norsk Polarinstitutt: Brage NP
2
Ohio State University (OSU): Knowledge Bank
2
Springer Nature (via Crossref)
2
Technical University of Denmark: DTU Orbit
2
Texas Tech University: TTU DSpace Repository
2
The Stacks (Library of Anglo-American Culture & History - FID AAC)
2
University of North Texas: UNT Digital Library
2
Vrije Universiteit Brussel (VUB): Research Output
2
eCite UTAS (University of Tasmania)
2
more ...