Content Provider
Unknown
4
WikiBooks - Open-content textbooks
4
Bogor Agricultural University: IPB Scientific Repository (Institut Pertanian Bogoar)
3
Croatian Digital Theses Repository (National and University Library in Zagreb)
3
Czech Academy of Sciences: dKNAV
3
Hacettepe University Institutional Repository
3
Arca (BC's Digital Treasures)
2
CaSA NaRA
2
Charles University CU Digital repository
2
Croatian Digital Dissertations Repository (National and University Library in Zagreb)
2
Digital Library of University of Maribor
2
Directory of Open Access Journals: DOAJ Articles
2
RIPEST - Repository of the Institute of Pesticides and Environmental Protection
2
RUNIOS - Repository of Josip Juraj Strossmayer University of Osijek
2
Aalborg University's Research Portal
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Biblioteka Cyfrowa Regionalia Ziemi Łódzkiej przy Wojewódzkiej Bibliotece Publicznej w Łodzi
1
Colecciones digitales - Biblioteca Virtual del Banco de la República
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Diponegoro University: Institutional Repository (UNDIP-IR)
1
FiVeR - Repository of the Institute of Field and Vegetable Crops
1
HAL Sorbonne Université
1
Hrčak - Portal of scientific journals of Croatia
1
Informa (via Crossref)
1
Jagiellonian University Repository
1
Journals@UIC (The University of Illinois at Chicago)
1
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
1
Repository UIN Sultan Syarif Kasim Riau
1
Repozytorium Uniwersytetu w Białymstoku (RUB)
1
Sabanci University Research Database
1
The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive)
1
Universidad de Oviedo: RUO
1
University of Michigan: Deep Blue
1
University of Minnesota Digital Conservancy
1
Université de Nantes: HAL-UNIV-NANTES
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1
Wyższa Szkoła Biznesu - National-Louis University, Nowy Sącz: Repozytorium WSB-NLU
1
Zenodo
1