Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
2,286
DataCite Metadata Store (German National Library of Science and Technology)
790
University of North Texas: UNT Digital Library
92
USGS Science Data Catalog (via DataONE)
63
LeibnizOpen (The Leibniz Association)
21
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
19
Research Data Australia (Australian National Data Service - ANDS)
17
Defense Technical Information Center: DTIC Technical Reports database
16
Directory of Open Access Journals: DOAJ Articles
15
Unknown
10
Dryad Digital Repository (Duke University)
9
University of Southern Denmark Research Portal
8
Arctic Data Center (via DataONE)
6
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
5
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR
4
NOAA NCEI Environmental Data Archive (via DataONE)
4
Utah State University: DigitalCommons@USU
4
Institut National de la Recherche Agronomique: ProdINRA
3
Lund University Publications (LUP)
3
University of Tromsø: Septentrio Academic Publishing
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
2
Croatian Digital Theses Repository (National and University Library in Zagreb)
2
Environmental Data Initiative (via DataONE)
2
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR
2
HELDA – University of Helsinki Open Repository
2
Hathi Trust Digital Library
2
Hirsla - Landspítali University Hospital research archive
2
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
2
Institutional Repository of Leibniz Universität Hannover
2
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
2
LSRC VL (Lithuanian Social Research Centre Virtual Library)
2
MDPI Open Access Publishing
2
Peoples' Friendship University of Russia (RUDN): Open repository
2
Politechnical University of Valencia: RiuNet
2
Saint Petersburg State University: Research Repository (DSpace SPbU)
2
Technical University of Denmark: DTU Orbit
2
The Journal of Soils and Environment
2
The University of Manchester: Research Explorer
2
University of Copenhagen: Research
2
University of St Andrews: Digital Research Repository
2
University of St Andrews: Research Portal
2
University of Stirling: Stirling Digital Research Repository
2
Université de Bretagne Occidentale: HAL
2
Ural Federal University (URFU): ELAR
2
Zenodo
2
ARPI - Archivio della Ricerca dell'Università di Pisa
1
Aarhus University: Research
1
Borealis
1
Caltech Authors (California Institute of Technology)
1
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