Content Provider
SFU Digitized Collections (Simon Fraser University)
1,089
University of Washington, Seattle: Digital Collections
695
APS Digital Library (American Philosophical Society)
248
DataCite Metadata Store (German National Library of Science and Technology)
148
PennState: Digital Collections
85
University of Michigan: Digital Collections
84
Unknown
78
Beloit College Digital Collections
60
JSTOR (via Crossref)
57
University of Alaska: ScholarWorks@UA
54
OLAC: Open Language Archives Community
50
Wiley Online Library (via Crossref)
35
Scholarship & Creative Works @ Digital UNC (University of Northern Colorado)
33
University of Northern Colorado: Digital UNC
31
Hathi Trust Digital Library
29
Oxford University Press (via Crossref)
26
University of British Columbia: cIRcle - UBC's Information Repository
25
Arca (BC's Digital Treasures)
20
University of California: eScholarship
20
Directory of Open Access Journals: DOAJ Articles
17
University of Chicago Press (via Crossref)
15
Informa (via Crossref)
14
Brigham Young University (BYU): Digital Collections
13
University of Calgary Journal Hosting
13
University of Nebraska-Lincoln: DigitalCommons@UNL
13
Cambridge University Press
12
Universitat de Girona: DUGi Fons Especials (UdG Digital Repository)
12
University of Alberta: Era - Education and Research Archive
12
Wiley Online Library
11
HighWire Press (Stanford University)
10
Open Access Journal Hosting (University of British Columbia)
10
ScholarSpace at University of Hawaii at Manoa
10
Biodiversity Heritage Library (BHL)
9
Oklahoma State University: Digital Collections @ OKSTATE Library
9
SAGE Publications (via Crossref)
9
Springer Nature (via Crossref)
9
Johns Hopkins University Press (via Crossref)
8
Persée: Portail de revues scientifiques en sciences humaines et sociales
8
Theses Canada/Thèses Canada (Library and Archives Canada)
8
WikiBooks - Open-content textbooks
8
Érudit.org (Université Montréal)
8
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
7
Arctic Institute of North America (via Crossref)
7
Digital Collections of Colorado (Colorado State University)
7
Mountain Scholar (Digital Collections of Colorado and Wyoming)
7
Portland State University: PDXScholar
7
Connecticut Digital Archive
6
Duke University Press (via Crossref)
6
OpenEdition
6
University of California Press (via Crossref)
6
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