Content Provider
University College Dublin: UCD Digital Library
165
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
119
Doria (National Library of Finland)
49
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
41
Biodiversity Heritage Library (BHL)
35
Hathi Trust Digital Library
28
JYX - Jyväskylä University Digital Archive
24
DataCite Metadata Store (German National Library of Science and Technology)
22
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
22
University of Washington, Seattle: Digital Collections
17
e-rara.ch (ETH Zürich)
16
Digital Repository of Scientific Institutes (RCIN)
12
Directory of Open Access Journals: DOAJ Articles
12
Phaidra Digital Collections (Permanent Hosting, Archiving and Indexing of Digital Resources and Assets - Università degli Studi di Padova)
12
Biblioteca Virtual del Patrimonio Bibliográfico
11
The Library of Congress: American Memory
11
ULB Düsseldorf: Digitale Sammlungen (University Library of Düsseldorf University)
11
Harvard University: Harvard Collections
10
The Portal to Texas History (University of North Texas)
10
Uppsala University: Publications (DiVA)
9
University of Michigan: Digital Collections
8
Vivarium (Online Digital Collections of Saint John's University and College of Saint Benedict)
8
Zenodo
8
Galiciana: Biblioteca Dixital de Galicia (Digital Library of Galicia)
7
University of Florida: Digital Library Center
7
Biblioteca Virtual de Defensa (BVD - Ministerio de Defensa de España)
6
Digital Library of University of Wroclaw
6
Villanova University Falvey Memorial Library: Villanova Digital Library
6
GettDigital (Gettysburg College Digital Collections)
5
University of Miami: Digital Collections
5
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
5
Wisconsin Historical Society: Turning Points in Wisconsin History
5
Collections patrimoniales des bibliothèques de l'Université de Strasbourg
4
Digital Library of Wielkopolska
4
Elbląg Digital Library
4
Maine State Documents (Maine State Library)
4
TU Darmstadt: Digital collections
4
The Royal Society (via Crossref)
4
U.S. National Library of Medicine (NLM): Images from the History of Medicine (IHM)
4
DIGIBUG: Repositorio Institucional de la Universidad de Granada
3
University of Münster: Digital Collections
3
Colecciones digitales - Biblioteca Virtual del Banco de la República
2
Georg-August-Universität Göttingen: GOEDOC
2
Illinois State Library: Illinois Digital Archives
2
Princeton Theological Seminary: Theological Commons
2
Silesian Digital Library
2
Staatsbibliothek zu Berlin: Digitised Collections
2
The College of Physicians of Philadelphia Digital Library
2
University of North Carolina: UNC Digital Collections
2
Universitäts- und Landesbibliothek Sachsen-Anhalt: Bibliotheca Ponickaviana
2
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