Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
6,795
Washington State University: WSU Libraries Digital Collections
6
University of Lethbridge Digitized Collections
5
Colecciones digitales - Biblioteca Virtual del Banco de la República
1
OpenEdition
1
Repozytorium Uniwersytetu w Białymstoku (RUB)
1
Revista Amazonia Investiga
1
Tomas Bata University Zlin: TBU publications
1
Universitat Politècnica de Catalunya (UPC): Theses and Dissertations Online (TDX)
1
Unknown
1