Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
267
International Arctic Research Center (IARC) Data Archive (via DataONE)
46
Arctic Data Center (via DataONE)
39
PANGAEA - Data Publisher for Earth & Environmental Science
21
Unknown
13
Directory of Open Access Journals: DOAJ Articles
9
Arctic Council Repository
5
RePEc (Research Papers in Economics)
5
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4
UNESDOC - UNESCO Digital Library
4
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
3
Arctic Portal Library
3
HAL Sorbonne Université
3
University of Calgary Journal Hosting
3
University of Texas at El Paso: Digital Commons@UTEP
3
Université de Nantes: HAL-UNIV-NANTES
3
Wiley Online Library
3
Zenodo
3
Copernicus Publications: E-Journals
2
Defense Technical Information Center: DTIC Technical Reports database
2
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
2
Lund University Publications (LUP)
2
PQDT Open: Open Access Dissertations and Theses (ProQuest)
2
Queen's University, Ontario: QSpace
2
Universidade de Lisboa: repositório.UL
2
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
2
University of New Hampshire: Scholars Repository
2
University of North Texas: UNT Digital Library
2
University of Potsdam: publish.UP
2
AAAS Resource Center (American Association for the Advancement of Science)
1
Apollo - University of Cambridge Repository
1
Archive Ouverte de l'Université Rennes (HAL)
1
Borealis
1
CDC Stacks (Centers for Disease Control and Prevention)
1
CURVE - Carleton University Research Virtual Environment
1
Canadian Science Publishing (via Crossref)
1
Carleton University's Institutional Repository
1
Clark University: Clark Digital Commons
1
De Gruyter (via Crossref)
1
Digital Commons @ American University Washington College of Law
1
Digital.CSIC (Spanish National Research Council)
1
Dipòsit Digital de la Universitat de Barcelona
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Grand Valley State University: Scholar Works @ GVSU
1
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
1
Harvard University: DASH - Digital Access to Scholarship at Harvard
1
Institut national de la recherche scientifique, Québec: Espace INRS
1
Institut national des sciences de l'Univers: HAL-INSU
1
IntechOpen (E-Books)
1
Jagiellonian University Repository
1
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