Content Provider
University of Alaska: ScholarWorks@UA
147
Peking University Institutional Repository (PKU IR)
125
Biodiversity Heritage Library (BHL)
62
University of Lethbridge Digitized Collections
54
Directory of Open Access Journals: DOAJ Journals
31
Brigham Young University (BYU): Digital Collections
27
UNESDOC - UNESCO Digital Library
16
Tohoku University Repository (TOUR)
15
University of Washington, Seattle: Digital Collections
13
VALTO - Institutional Repository for the Government
9
ETH Zürich Research Collection
8
epub.oeaw (The digital publication portal of the Austrian Academy of Sciences)
8
Naval Postgraduate School: Calhoun
5
The University of Texas at Austin: Texas ScholarWorks
5
DataCite Metadata Store (German National Library of Science and Technology)
3
Digital.CSIC (Spanish National Research Council)
3
OpenAgrar (OA)
3
University of Minnesota Digital Conservancy
3
University of North Texas: UNT Digital Library
3
VIURRSpace (Royal Roads University and Vancouver Island University)
3
BBC - Bałtycka Digital Library (Poland)
2
CogPrints - Cognitive Sciences EPrint Archive
2
HELDA – University of Helsinki Open Repository
2
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
2
Vancouver Island University: Viuspace
2
APS Digital Library (American Philosophical Society)
1
CEIBS Research Online
1
DigitalCommons@CSP (Concordia University St. Paul)
1
Florida State College at Jacksonville (FSCJ): Digital Archive
1
Florida State University Digital Library (FSUDL)
1
Florida State University: DigiNole Commons
1
KRISHI Publication and Data Inventory Repository (Knowledge based Resources Information Systems Hub for Innovations in Agriculture - Indian Council of Agricultural Research, ICAR)
1
National Research Council Canada: NRC Publications Archive
1
Natural Resources Institute Finland: Jukuri
1
Nomos (via Crossref)
1
Texas A&M University Galveston Campus: DSpace Repository
1
The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive)
1
University of Arkansas: Digital Collections
1
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1
Wichita State University: SOAR (Shocker Open Access Repository)
1