Content Provider
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Dryad Digital Repository (Duke University)
5,830
Hathi Trust Digital Library
5,733
HAL Sorbonne Université
5,608
OLAC: Open Language Archives Community
5,441
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
5,428
Informa
5,280
Springer Nature
5,274
NASA Technical Reports Server (NTRS)
5,269
University of Calgary Journal Hosting
5,144
SFU Digitized Collections (Simon Fraser University)
4,933
Oxford University Press
4,691
WikiBooks - Open-content textbooks
4,608
University of Southampton: e-Prints Soton
4,536
Technical University of Denmark: DTU Orbit
4,348
Arctic Institute of North America (via Crossref)
4,321
Max Planck Society: MPG.PuRe
4,219
Institute for Marine Research: Brage IMR
4,209
Memorial University of Newfoundland: Research Repository
4,187
ArXiv.org (Cornell University Library)
4,119
Canadian Science Publishing
3,991
Frontiers (Publisher)
3,958
Ohio State University (OSU): Knowledge Bank
3,903
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
3,877
University of Alaska: ScholarWorks@UA
3,860
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
3,656
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3,551
University of Lethbridge Digitized Collections
3,353
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
3,307
USGS Science Data Catalog (via DataONE)
3,232
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
3,187
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
3,166
NTNU Open Archive (Norwegian University of Science and Technology)
3,162
Theses Canada/Thèses Canada (Library and Archives Canada)
3,109
SAGE Publications (via Crossref)
3,103
Wageningen UR (University & Research Centre): Digital Library
3,074
Université Grenoble Alpes: HAL
3,073
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3,040
University of Tasmania: UTas ePrints
3,031
IEEE Publications (via Crossref)
3,023
Lund University Publications (LUP)
2,941
Luleå University of Technology Publications (DiVA)
2,921
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2,916
University of Alberta: Era - Education and Research Archive
2,912
Archives ouvertes de Paris-Saclay
2,876
Umeå University: Publications (DiVA)
2,859
Hirsla - Landspítali University Hospital research archive
2,848
IEDA: Marine-Geo Digital Library (via DataONE)
2,828
Natural Resources Institute Finland: Jukuri
2,797
Washington State University: WSU Libraries Digital Collections
2,796
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2,790
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