Content Provider
WikiBooks - Open-content textbooks
36
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
22
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
18
Biodiversity Heritage Library (BHL)
6
Texas A&M University Digital Repository
6
Unknown
5
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
3
UNESDOC - UNESCO Digital Library
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
2
GEO-LEOe-docs (FID GEO)
2
American Museum of Natural History: AMNH scientific publications
1
Australian National University: ANU Digital Collections
1
International Development Research Centre: IDRC Digital Library
1
Macquarie University Research Portal
1
Middlesex University London: Research Repository
1
USRA Houston Repository (Universities Space Research Association)
1
Universidade de Lisboa: repositório.UL
1
University College London: UCL Discovery
1
University of California: eScholarship
1
University of Copenhagen: Research
1
University of North Texas: UNT Digital Library
1
University of Southampton: e-Prints Soton
1
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive)
1