Content Provider
DigiZeitschriften: The German digital journal archive (Göttingen University Library)
53
DataCite Metadata Store (German National Library of Science and Technology)
13
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
7
BORIS (Bern Open Repository and Information System, University of Bern)
4
Digital Repository of Scientific Institutes (RCIN)
2
Hathi Trust Digital Library
2
Project Gutenberg (PG)
2
Cologne University: KUPS
1
Frankfurt/Main University Library: Digitale Sammlungen
1
Harvard University: Harvard Collections
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
Texas Tech University: TTU DSpace Repository
1
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1
York University Digital Library
1
ZHAW digitalcollection (Repository of the Zurich University of Applied Sciences)
1