Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
127
PANGAEA - Data Publisher for Earth & Environmental Science
88
Directory of Open Access Journals: DOAJ Articles
3
Lund University Publications (LUP)
2
Dialnet - Portada de revistas (Universidad de La Rioja)
1
Dresden University of Technology: Qucosa
1
Jultika - University of Oulu repository
1
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
1
LSRC VL (Lithuanian Social Research Centre Virtual Library)
1
Portal de Revistas de la Universidad de La Rioja
1