Content Provider
University of Lethbridge Digitized Collections
14
Unknown
9
University of Calgary Journal Hosting
8
Canadian Science Publishing (via Crossref)
7
WikiBooks - Open-content textbooks
6
DataCite Metadata Store (German National Library of Science and Technology)
5
Cambridge University Press
3
Directory of Open Access Journals: DOAJ Articles
3
Memorial University of Newfoundland: Research Repository
3
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
3
British Library Research Repository
2
Cambridge University Press (via Crossref)
2
Defense Technical Information Center: DTIC Technical Reports database
2
The Portal to Texas History (University of North Texas)
2
Wiley Online Library (via Crossref)
2
Wisconsin Historical Society: Turning Points in Wisconsin History
2
Carleton University's Institutional Repository
1
Digital.CSIC (Spanish National Research Council)
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Hathi Trust Digital Library
1
Hunter Library Digital Collections (Western Carolina University)
1
Informa
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
Memorial University of Newfoundland: Electronic Journals
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
Polar Research (E-Journal)
1
Syracuse University Research Facility And Collaborative Environment (SUrface)
1
The University of Queensland: UQ eSpace
1
Theses Canada/Thèses Canada (Library and Archives Canada)
1
University of British Columbia: cIRcle - UBC's Information Repository
1
University of Copenhagen: Research
1
University of Huddersfield Research Portal
1
University of Michigan: Digital Collections
1
University of New Brunswick: Centre for Digital Scholarship Journals
1
University of Washington, Seattle: Digital Collections
1
Uppsala University: Publications (DiVA)
1
Wiley Online Library
1
York University Digital Library
1