Content Provider
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
12
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
10
Oxford University Press (via Crossref)
3
Biodiversity Heritage Library (BHL)
2
Arctic Portal Library
1
Cambridge University Press
1
Oxford University Press
1
Smithsonian Institution: Figshare
1
Texas Tech University: Southwest Collection/Special Collections Library
1
UNESDOC - UNESCO Digital Library
1