Content Provider
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
212,514
DataCite Metadata Store (German National Library of Science and Technology)
5,697
University of Michigan: Digital Collections
4,713
Memorial University of Newfoundland: Research Repository
3,307
Unknown
1,485
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1,385
Canadian Science Publishing (via Crossref)
1,027
David Rumsey Historical Map Collection (Cartography Associates)
979
Biodiversity Heritage Library (BHL)
707
Zenodo
647
Directory of Open Access Journals: DOAJ Articles
644
University of New Brunswick: Centre for Digital Scholarship Journals
623
Hathi Trust Digital Library
618
PubMed Central (PMC)
587
Wiley Online Library (via Crossref)
444
ScienceDirect (Elsevier - via Crossref)
434
University of Toronto Press (U Toronto Press - via Crossref)
408
Cambridge University Press
396
Springer Nature (via Crossref)
379
Oxford University Press (via Crossref)
376
Canadian Science Publishing
352
Wiley Online Library
350
JSTOR (via Crossref)
349
HighWire Press (Stanford University)
306
Informa (via Crossref)
264
Connecticut Digital Archive
255
Érudit.org (Université Montréal)
248
RePEc (Research Papers in Economics)
218
Borealis
214
Cambridge University Press (via Crossref)
205
PANGAEA - Data Publisher for Earth & Environmental Science
199
SAGE Publications (via Crossref)
196
WikiBooks - Open-content textbooks
183
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
182
ScienceDirect (Elsevier)
170
Theses Canada/Thèses Canada (Library and Archives Canada)
168
Defense Technical Information Center: DTIC Technical Reports database
162
Dalhousie University: DalSpace Institutional Repository
155
Dryad Digital Repository (Duke University)
129
National Research Council Canada: NRC Publications Archive
117
University of Toronto: Research Repository T-Space
103
University of Lethbridge Digitized Collections
98
Institut national des sciences de l'Univers: HAL-INSU
95
Memorial University of Newfoundland: Electronic Journals
89
Université de Nantes: HAL-UNIV-NANTES
88
MDPI Open Access Publishing
87
University of Calgary Journal Hosting
86
McGill University: eScholarship@McGill
84
Oxford University Press
84
Digital.CSIC (Spanish National Research Council)
77
more ...