Content Provider
Unknown
20
Cambridge University Press
15
University of Calgary Journal Hosting
12
Directory of Open Access Journals: DOAJ Articles
11
Wiley Online Library
11
Royal Holloway University of London: Royal Holloway Digital Repository
9
DataCite Metadata Store (German National Library of Science and Technology)
8
Canadian Science Publishing
7
PubMed Central (PMC)
5
Queen's University Belfast Research Portal
5
Biodiversity Heritage Library (BHL)
4
Canadian Science Publishing (via Crossref)
4
WikiBooks - Open-content textbooks
4
Cambridge University Press (via Crossref)
3
DataCite
3
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
3
PANGAEA - Data Publisher for Earth & Environmental Science
3
University of Alaska: ScholarWorks@UA
3
Érudit.org (Université Montréal)
3
AAAS Resource Center (American Association for the Advancement of Science)
2
American Museum of Natural History: AMNH scientific publications
2
Arca (BC's Digital Treasures)
2
BioOne Online Journals
2
MDPI Open Access Publishing
2
Magnolia press
2
OSKAR Bordeaux (Open Science Knowledge ARchive)
2
Pensoft Publishers
2
Springer Nature (via Crossref)
2
Summit - SFU Research Repository (Simon Fraser University)
2
The Canadian Field-Naturalist (E-Journal)
2
The University of Adelaide: Digital Library
2
The University of Western Ontario: Scholarship@Western
2
Theses Canada/Thèses Canada (Library and Archives Canada)
2
University of California: eScholarship
2
Wiley Online Library (via Crossref)
2
Zenodo
2
Antiquity
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
BioMed Central
1
Brock University Digital Repository
1
Carleton University's Institutional Repository
1
Cologne University: KUPS
1
Digital Repository of University of Zaragoza (ZAGUAN)
1
ETH Zürich Research Collection
1
Federation of Finnish Learned Societies: Scientific Journals Online
1
INRAP: HAL (Institut national de recherches archéologiques préventives)
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
Informa (via Crossref)
1
MacSphere (McMaster University)
1
Murdoch University: Murdoch Research Repository
1
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