Content Provider
LeibnizOpen (The Leibniz Association)
21
Australian National University: ANU Digital Collections
17
DataCite Metadata Store (German National Library of Science and Technology)
15
Unknown
10
Directory of Open Access Journals: DOAJ Articles
7
Biodiversity Heritage Library (BHL)
6
DataverseNO
4
The University of Queensland: UQ eSpace
4
NORA (National aggregator of open repositories of Russian universities)
3
Geological Quarterly
2
Geological Society of London: Figshare
2
Indiana University - Purdue University Indianapolis: IUPUI Scholar Works
2
Kazan Federal University Digital Repository
2
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
2
LSRC VL (Lithuanian Social Research Centre Virtual Library)
2
Lund University Publications (LUP)
2
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
2
Universitat de València: Open Journal Systems
2
Uppsala University: Publications (DiVA)
2
Utrecht University Repository
2
Zenodo
2
Altai State University: Scientific Journals of ASU
1
Apollo - University of Cambridge Repository
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
BioMed Central
1
Caltech Authors (California Institute of Technology)
1
Cedarville University: DigitalCommons@Cedarville
1
Curtin University: espace
1
DRO - Deakin Research Online
1
Dalhousie University: DalSpace Institutional Repository
1
Digital.CSIC (Spanish National Research Council)
1
GEO-LEOe-docs (FID GEO)
1
IRIS UNIPV (Università degli studi di Pavia)
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
IUScholarWorks Indiana University
1
Imperial College London: Spiral
1
Institut national des sciences de l'Univers: HAL-INSU
1
MDPI Open Access Publishing
1
Macquarie University Research Portal
1
PRISM - University of Calgary Digital Repository
1
Peoples' Friendship University of Russia (RUDN): Open repository
1
Polar Research
1
Portal de Periódicos da UFRJ (Universidade Federal do Rio de Janeiro)
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
Repositorio Institucional Universidad Nacional de Colombia
1
The University of Kansas: KU ScholarWorks
1
UNB Libraries Dataverse Research Data Repository (University of New Brunswick)
1
Universidad Nacional de Colombia: Portal de Revistas UN
1
Universidade Federal da Bahia: Repositório Institucional da UFBA
1
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
1
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