Content Provider
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
3,258
Biodiversity Heritage Library (BHL)
461
WikiBooks - Open-content textbooks
276
David Rumsey Historical Map Collection (Cartography Associates)
94
Cambridge University Press
19
De Gruyter
17
University of Toronto Press (U Toronto Press - via Crossref)
16
JSTOR
13
Oxford University Press (via Crossref)
7
University of Toronto Press (U Toronto Press)
7
DataCite Metadata Store (German National Library of Science and Technology)
6
Johns Hopkins University Press
6
UNESDOC - UNESCO Digital Library
6
RePEc (Research Papers in Economics)
5
University of the Highlands and Islands: Research Database of UHI
5
Aberdeen University Research Archive (AURA)
4
Queen's University, Ontario: QSpace
4
Tokyo Keizai University Institutional Repository
4
University of North Texas: UNT Digital Library
4
Unknown
4
Aarhus University: Research
3
Biblioteca Virtual de Defensa (BVD - Ministerio de Defensa de España)
3
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
3
HELDA – University of Helsinki Open Repository
3
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
3
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
3
Memorial University of Newfoundland: Research Repository
3
University of Southampton: e-Prints Soton
3
Arca (BC's Digital Treasures)
2
Dalhousie University: DalSpace Institutional Repository
2
Digi EconBiz
2
Edinburgh University Press
2
Informa
2
JSTOR (via Crossref)
2
Springer Nature
2
Springer Nature (via Crossref)
2
The Open University: Open Research Online (ORO)
2
Waterford Institute of Technology: WIT Institutional Repository
2
ARPI - Archivio della Ricerca dell'Università di Pisa
1
Aalborg University's Research Portal
1
Abilene Christian University: Digital Commons @ ACU
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Bond University Research Portal
1
Boston University: OpenBU
1
British Library Research Repository
1
Brock University Digital Repository
1
Cambridge University Press (via Crossref)
1
Galiciana: Biblioteca Dixital de Galicia (Digital Library of Galicia)
1
I-Revues (E-Journals, INIST-CNRS)
1
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
1
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