Content Provider
Unknown
2,197
Copernicus Publications: E-Journals
1,384
PubMed Central (PMC)
1,038
Defense Technical Information Center: DTIC Technical Reports database
867
DataCite Metadata Store (German National Library of Science and Technology)
414
HighWire Press (Stanford University)
409
MDPI Open Access Publishing
303
Hathi Trust Digital Library
281
University of New Hampshire: Scholars Repository
139
University of Michigan: Digital Collections
85
DigiZeitschriften: The German digital journal archive (Göttingen University Library)
63
BioOne Online Journals
60
Érudit.org (Université Montréal)
59
IRD (Institute de recherche pour le développement): Horizon
43
University of the Pacific, McGeorge School of Law: Scholarly Commons
39
University of the Pacific: Scholarly Commons
39
norden (Nordic Council of Ministers): Publications (DiVA)
37
Washington State University: WSU Libraries Digital Collections
34
OhioLINK: Electronic Theses and Dissertations Center
32
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
31
The University of Utah: J. Willard Marriott Digital Library
17
American Museum of Natural History: AMNH scientific publications
16
University of Florida: Digital Library Center
16
English Heritage ViewFinder
13
North Dakota State University (NDSU): Digital Horizons
12
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
11
Natural Environment Research Council: NERC Open Research Archive
11
Project Gutenberg (PG)
11
Texas Tech University: TTU DSpace Repository
11
UQAM - Université du Québec à Montréal: archipel
11
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
9
Princeton Theological Seminary: Theological Commons
8
University of North Texas: UNT Digital Library
8
Hrčak - Portal of scientific journals of Croatia
7
Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky: IVS FEB RAS Repository
7
eCite UTAS (University of Tasmania)
7
Brigham Young University (BYU): ScholarsArchive
6
Digital Repository of Scientific Institutes (RCIN)
6
Florida State University Digital Library (FSUDL)
6
Harvard University: Harvard Collections
6
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
6
The Library of Congress: American Memory
6
University of Vienna: Phaidra
6
BORIS (Bern Open Repository and Information System, University of Bern)
5
Florida State University: DigiNole Commons
5
Knowledge@UChicago (University of Chicago)
5
PennState: Electronic Theses and Dissertations (eTD)
5
Purdue University: e-Pubs
5
SHURA (Sheffield Hallam University Research Archive)
5
The London School of Economics and Political Science: LSE Research Online
5
more ...