Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
286
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
53
Unknown
28
Oklahoma State University: Digital Collections @ OKSTATE Library
27
North Dakota State University (NDSU): Digital Horizons
25
Cambridge University Press
16
Directory of Open Access Journals: DOAJ Articles
13
Cambridge University Press (via Crossref)
12
Aarhus University: OJS at The State and University Library
11
Tidsskrift.dk (The Royal Library, Denmark)
11
NOAA NCEI Environmental Data Archive (via DataONE)
10
UTSA Digital Collections (The University of Texas at San Antonio)
10
The University of Utah: J. Willard Marriott Digital Library
8
Wiley Online Library (via Crossref)
8
Zenodo
8
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
7
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
7
Persée: Portail de revues scientifiques en sciences humaines et sociales
7
University of Calgary Journal Hosting
7
University of Michigan: Digital Collections
7
Hunter Library Digital Collections (Western Carolina University)
6
WikiBooks - Open-content textbooks
6
the Digital Archaeological Record (via DataONE)
6
Université de Nantes: HAL-UNIV-NANTES
5
Arctic Institute of North America (via Crossref)
4
Connecticut Digital Archive
4
CyberLeninka (Scientific Electronic Library)
4
Digital Repository of Scientific Institutes (RCIN)
4
Geological Quarterly
4
INRAP: HAL (Institut national de recherches archéologiques préventives)
4
PALNI Digital Library Collections (Private Academic Library Network of Indiana)
4
Rijksuniversiteit Groningen: University of Groningen Press
4
ARPI - Archivio della Ricerca dell'Università di Pisa
3
Arheologia (E-Journal)
3
Digital Commons University of South Florida (USF)
3
New Prairie Press - Open Access Scholarly Journals
3
The Royal Society (via Crossref)
3
University of South Florida St. Petersburg: Digital USFSP
3
Università degli Studi di Ferrara: CINECA IRIS
3
Beloit College Digital Collections
2
Environmental Data Initiative (via DataONE)
2
HAL-EHESS : Le portail HAL de l'École des hautes études en sciences sociales
2
Hathi Trust Digital Library
2
LillOA (Lille Open Archive - Université de Lille)
2
Loma Linda University Digital Archives
2
Lund University Publications (LUP)
2
Muséum National d'Histoire Naturelle (MNHM): HAL
2
OhioLINK: Ohio Digital Resource Commons (DRC)
2
Oxford University Press (via Crossref)
2
Theses Canada/Thèses Canada (Library and Archives Canada)
2
more ...