Content Provider
Directory of Open Access Journals: DOAJ Articles
60
Biodiversity Heritage Library (BHL)
23
Unknown
22
DigiZeitschriften: The German digital journal archive (Göttingen University Library)
14
BORIS (Bern Open Repository and Information System, University of Bern)
5
GEO-LEOe-docs (FID GEO)
5
Georg-August-Universität Göttingen: GOEDOC
2
UNESDOC - UNESCO Digital Library
2
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Center for Jewish History: Digital Collections
1
Cologne University: KUPS
1
Directory of Open Access Journals: DOAJ Journals
1
Doria (National Library of Finland)
1
SAIC Digital Collections (School of the Art Institute of Chicago)
1
Sapienza Università di Roma: CINECA IRIS
1
University of St. Gallen: Research Platform Alexandria
1
the clark - Digital Collections (Sterling and Francine Clark Art Institute Library)
1