Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2,376
University of Washington, Seattle: Digital Collections
1,085
University of Michigan: Digital Collections
774
Zenodo
308
Unknown
204
University of Lethbridge Digitized Collections
203
Directory of Open Access Journals: DOAJ Articles
187
USGS Science Data Catalog (via DataONE)
140
University of Calgary Journal Hosting
123
Canadian Science Publishing (via Crossref)
121
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
101
PANGAEA - Data Publisher for Earth & Environmental Science
84
Washington State University: WSU Libraries Digital Collections
83
Cambridge University Press
77
Arctic Data Center (via DataONE)
74
Knowledge Network for Biocomplexity (via DataONE)
73
PubMed Central (PMC)
50
Wiley Online Library
50
University of British Columbia: cIRcle - UBC's Information Repository
49
Borealis
44
Theses Canada/Thèses Canada (Library and Archives Canada)
42
Wiley Online Library (via Crossref)
40
RePEc (Research Papers in Economics)
38
Copernicus Publications: E-Journals
37
ScienceDirect (Elsevier - via Crossref)
36
Springer Nature (via Crossref)
35
VIURRSpace (Royal Roads University and Vancouver Island University)
33
Niedersächsisches Online-Archiv NOA
31
Cambridge University Press (via Crossref)
27
University of Toronto: Research Repository T-Space
26
Arctic Institute of North America (via Crossref)
25
uO Research (University of Ottawa - uOttawa)
25
Dryad Digital Repository (Duke University)
22
University of Alaska: ScholarWorks@UA
22
University of Saskatchewan: eCommons@USASK
22
Arctic Council Repository
21
Informa (via Crossref)
21
Arca (BC's Digital Treasures)
20
Canadian Science Publishing
19
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
19
The Canadian Field-Naturalist (E-Journal)
19
Vancouver Island University: Viuspace
19
Summit - SFU Research Repository (Simon Fraser University)
18
University of Potsdam: publish.UP
18
Carleton University's Institutional Repository
17
MDPI Open Access Publishing
16
University of Alberta: Era - Education and Research Archive
16
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
15
Biodiversity Heritage Library (BHL)
15
Defense Technical Information Center: DTIC Technical Reports database
15
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