Content Provider
Altai State University: Scientific Journals of ASU
32
Zenodo
23
Directory of Open Access Journals: DOAJ Articles
17
USGS Science Data Catalog (via DataONE)
8
Pensoft Publishers
7
PANGAEA - Data Publisher for Earth & Environmental Science
6
DataCite Metadata Store (German National Library of Science and Technology)
5
Defense Technical Information Center: DTIC Technical Reports database
5
Unknown
5
MDPI Open Access Publishing
4
CyberLeninka (Scientific Electronic Library)
3
Pamukkale University Repository
3
Bulletin of NSAU (Novosibirsk State Agrarian University)
2
DataCite
2
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
2
ORNL DAAC (via DataONE)
2
WHO (World Health Organization): Institutional Repository for Information Sharing (IRIS)
2
Adam Mickiewicz University in Poznań: PRESSto
1
Alternative Energy and Ecology (ISJAEE)
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Australian National University: ANU Digital Collections
1
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
1
Collège de France: HAL
1
DergiPark Akademik (E-Journals)
1
Digital Repository of Scientific Institutes (RCIN)
1
Eurasian Journal of Economic and Business Studies (EJEBS)
1
Hathi Trust Digital Library
1
Ice and Snow (E-Journal)
1
Journals at the University of Arizona
1
KU Leuven: Lirias
1
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
1
LSRC VL (Lithuanian Social Research Centre Virtual Library)
1
LUTPub (LUT University)
1
Lund University Publications Student Papers (LUP-SP)
1
Magnolia press
1
NORA (National aggregator of open repositories of Russian universities)
1
National Technical University of Athens (NTUA): DSpace
1
OpenEdition
1
Politechnical University of Valencia: RiuNet
1
Post-Soviet Issues
1
PubMed Central (PMC)
1
Queen's University Belfast Research Portal
1
Repositorio Institucional SegemAR (Servicio Geológico Minero Argentino)
1
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1
The Portal to Texas History (University of North Texas)
1
University of North Texas: UNT Digital Library
1
University of Rzeszów (UR): Repository
1
University of Tyumen: UTMN Repository
1
University of West Bohemia Digital Library
1
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
1
more ...