Content Provider
Unknown
151
DataCite Metadata Store (German National Library of Science and Technology)
137
Defense Technical Information Center: DTIC Technical Reports database
61
Copernicus Publications: E-Journals
53
PubMed Central (PMC)
37
University of Windsor, Ontario: Scholarship at UWindsor
17
Érudit.org (Université Montréal)
16
MDPI Open Access Publishing
14
HighWire Press (Stanford University)
8
University of Colorado, Boulder: CU Scholar
8
University of New Hampshire: Scholars Repository
8
Hathi Trust Digital Library
4
University of Texas at El Paso: Digital Commons@UTEP
4
Washington State University: WSU Libraries Digital Collections
4
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne)
3
UQAM - Université du Québec à Montréal: archipel
3
University of Massachusetts: ScholarWorks@UMass Amherst
3
University of Michigan: Digital Collections
3
University of Nebraska-Lincoln: DigitalCommons@UNL
3
Arctic Portal Library
2
Harvard University: Harvard Collections
2
IRD (Institute de recherche pour le développement): Horizon
2
Smith College: Smith ScholarWorks
2
University of Rhode Island: DigitalCommons@URI
2
Wilfrid Laurier University, Ontario: Scholars Commons@Laurier
2
Bangor Community: Digital Commons@bpl
1
BioOne Online Journals
1
Clark University: Clark Digital Commons
1
CyberLeninka (Scientific Electronic Library)
1
Dalhousie University: DalSpace Institutional Repository
1
Dartmouth Digital Commons (Dartmouth College)
1
Florida State University Digital Library (FSUDL)
1
Florida State University: DigiNole Commons
1
LSU Digital Commons (Louisiana State University)
1
Macalester College (Minnesota): DigitalCommons@Macalester
1
National Library of Australia: Digital Collections
1
Portland Public Library: Digital Commons
1
Purdue University: e-Pubs
1
Schulich Scholars (Schulich School of Law, Dalhousie University)
1
The Online Books Page (Penn Libraries, University of Pennsylvania)
1
The University of Vermont: ScholarWorks @ UVM
1
The University of Western Ontario: Scholarship@Western
1
University of Illinois at Urbana-Champaign: UIUC Digitized Books
1
University of Minnesota, Morris (UMM): Digital Well
1
University of Pennsylvania: ScholaryCommons@Penn
1
University of South Carolina Libraries: Scholar Commons
1
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1
Villanova University Falvey Memorial Library: Villanova Digital Library
1