Content Provider
Biodiversity Heritage Library (BHL)
1,270
WikiBooks - Open-content textbooks
445
Unknown
231
Arctic Portal Library
213
Cambridge University Press
211
Aarhus University: Research
156
LaCRIS - University of Lapland Current Research System
112
University of Copenhagen: Research
100
Springer Nature
81
Informa (via Crossref)
75
Oxford University Press (via Crossref)
68
VTT's Research Information Portal
66
Technical University of Denmark: DTU Orbit
61
RePEc (Research Papers in Economics)
48
UNESDOC - UNESCO Digital Library
48
norden (Nordic Council of Ministers): Publications (DiVA)
47
JSTOR
45
Springer Nature (via Crossref)
45
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
43
DataCite Metadata Store (German National Library of Science and Technology)
42
Open Research Library
41
University of Lapland: Lauda
39
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
38
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
33
Aalborg University's Research Portal
32
De Gruyter
32
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
24
UQAM - Université du Québec à Montréal: archipel
24
The National Academies Press (via Crossref)
23
Roskilde University Research Portal (RUC)
22
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
20
Zenodo
19
Informa
18
Arctic Council Repository
17
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
17
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
15
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
15
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
14
Brill
13
PRISM - University of Calgary Digital Repository
13
Texas A&M University Digital Repository
13
University of Southern Denmark Research Portal
13
American Museum of Natural History: AMNH scientific publications
12
Johns Hopkins University Press
12
UArctic Library
12
University of Groningen research database
12
Université de Nantes: HAL-UNIV-NANTES
12
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
11
Australian National University: ANU Digital Collections
11
Oxford University Press
11
more ...