Content Provider
Biodiversity Heritage Library (BHL)
188
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
77
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
69
WikiBooks - Open-content textbooks
9
OpenAgrar (OA)
5
DataCite Metadata Store (German National Library of Science and Technology)
2
Arctic Portal Library
1
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1
Pensoft Publishers
1
Texas Tech University: Southwest Collection/Special Collections Library
1