Content Provider
Biodiversity Heritage Library (BHL)
200
WikiBooks - Open-content textbooks
196
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
150
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
102
David Rumsey Historical Map Collection (Cartography Associates)
47
Cambridge University Press
38
UiTM Digital Repository (Universiti Teknologi Mara)
14
Texas A&M University Digital Repository
13
ScholarSpace at University of Hawaii at Manoa
12
School of Oriental and African Studies, University of London: SOAS Research Online
11
Khazar University Institutional Repository (KUIR)
9
University of North Texas: UNT Digital Library
9
Unknown
8
Arca (BC's Digital Treasures)
7
Australian National University: ANU Digital Collections
7
Oxford University Press (via Crossref)
7
RePEc (Research Papers in Economics)
7
The University of Warwick: WRAP - Warwick Research Archive Portal
7
UNBC's Digital Institutional Repository (University of Northern British Columbia)
7
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
6
University of Copenhagen: Research
6
Research Institute for Humanity and Nature Repository
5
Technical University of Denmark: DTU Orbit
5
UNESDOC - UNESCO Digital Library
5
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
4
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
4
Open Research Library
4
OpenAgrar (OA)
4
DataCite Metadata Store (German National Library of Science and Technology)
3
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
3
Pensoft Publishers
3
Springer Nature (via Crossref)
3
University of Southampton: e-Prints Soton
3
Aalborg University's Research Portal
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
2
Arctic Portal Library
2
Bond University Research Portal
2
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
2
James Cook University, Australia: ResearchOnline@JCU
2
Marine Institute Open Access Repository
2
OLAC: Open Language Archives Community
2
Oxford University Press
2
Texas A&M University Galveston Campus: DSpace Repository
2
The Open University: Open Research Online (ORO)
2
University of Sussex: Sussex Research Online
2
University of Western Sydney (UWS): Research Direct
2
University of the Highlands and Islands: Research Database of UHI
2
Uppsala University: Publications (DiVA)
2
e-rara.ch (ETH Zürich)
2
Aarhus University: Research
1
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