Content Provider
Directory of Open Access Journals: DOAJ Articles
85
Biodiversity Heritage Library (BHL)
50
WHO (World Health Organization): Institutional Repository for Information Sharing (IRIS)
12
Unknown
10
UNESDOC - UNESCO Digital Library
6
OLAC: Open Language Archives Community
2
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
1
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
1
MCS University Digital Library
1
The Library of Congress: American Memory
1
University of Tartu: Dspace
1
Érudit.org (Université Montréal)
1