Content Provider
Biodiversity Heritage Library (BHL)
19
WikiBooks - Open-content textbooks
17
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
7
Texas A&M University Digital Repository
6
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
5
Cambridge University Press
4
Texas A&M University Galveston Campus: DSpace Repository
2
University of Southampton: e-Prints Soton
2
Unknown
2
Aarhus University: Research
1
Australian National University: ANU Digital Collections
1
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
1
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
1
Marine Institute Open Access Repository
1
Norwegian Institute for Nature Research: Brage NINA
1
Open Research Library
1
Oxford University Press (via Crossref)
1
RePEc (Research Papers in Economics)
1
Rhodes University Cory: Repository
1
SEALS Digital Commons (South East Academic Libraries System, South Africa)
1
Technical University of Denmark: DTU Orbit
1
The Open University: Open Research Online (ORO)
1
University of the Highlands and Islands: Research Database of UHI
1