Content Provider
WikiBooks - Open-content textbooks
23
Albanica - Platforma e Albanian Academic Journals
16
Unknown
3
Directory of Open Access Journals: DOAJ Articles
2
Persée: Portail de revues scientifiques en sciences humaines et sociales
2
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
1
Van Yüzüncü Yıl University Research Information System
1