Content Provider
Defense Technical Information Center: DTIC Technical Reports database
3,552
Copernicus Publications: E-Journals
1,037
Unknown
909
MDPI Open Access Publishing
744
PubMed Central (PMC)
632
DataCite
350
DataCite Metadata Store (German National Library of Science and Technology)
302
Hathi Trust Digital Library
37
BioOne Online Journals
36
Wilfrid Laurier University, Ontario: Scholars Commons@Laurier
29
Érudit.org (Université Montréal)
28
Digital Collections of Colorado (Colorado State University)
23
Mountain Scholar (Digital Collections of Colorado and Wyoming)
23
HighWire Press (Stanford University)
20
IRD (Institute de recherche pour le développement): Horizon
16
University of Michigan: Digital Collections
14
University of Texas at El Paso: Digital Commons@UTEP
14
University of South Florida St. Petersburg: Digital USFSP
12
University of Vienna: Phaidra
11
Natural Environment Research Council: NERC Open Research Archive
10
OhioLINK: Electronic Theses and Dissertations Center
10
Arizona State University: ASU Digital Repository
8
Digital Commons University of South Florida (USF)
8
Digital Repository of Scientific Institutes (RCIN)
8
The University of Western Ontario: Scholarship@Western
8
UQAM - Université du Québec à Montréal: archipel
8
Florida State University Digital Library (FSUDL)
7
Purdue University: e-Pubs
7
University of Florida: Digital Library Center
7
Digital Repository @ Iowa State University
6
Hes-so: ArODES Open Archive (University of Applied Sciences and Arts Western Switzerland)
5
University of South Carolina Libraries: Scholar Commons
5
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
5
Université du Québec à Chicoutimi (UQAC): Constellation
5
Western Washington University: CEDAR (Contributing to Education through Digital Access to Research)
5
Florida State University: DigiNole Commons
4
Lund University Publications (LUP)
4
The Chinese University of Hong Kong: CUHK Digital Repository
4
The University of Utah: J. Willard Marriott Digital Library
4
University of Northern Iowa: UNI ScholarWorks
4
Knowledge@UChicago (University of Chicago)
3
University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive)
3
University of Nevada, Las Vegas: Digital Scholarship@UNLV
3
University of North Texas: UNT Digital Library
3
Villanova University Falvey Memorial Library: Villanova Digital Library
3
AgEcon Search - Research in Agricultural & Applied Economics
2
Arctic Portal Library
2
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne)
2
KU.edoc - Publikationsserver der Katholischen Universität Eichstätt-Ingolstadt
2
LSU Digital Commons (Louisiana State University)
2
more ...