Content Provider
USGS Science Data Catalog (via DataONE)
116
NOAA NCEI Environmental Data Archive (via DataONE)
107
University of Calgary Journal Hosting
42
Arctic Data Center (via DataONE)
34
DataCite Metadata Store (German National Library of Science and Technology)
34
Research Workspace (via DataONE)
23
PANGAEA - Data Publisher for Earth & Environmental Science
9
University of Alaska: ScholarWorks@UA
6
Unknown
5
Defense Technical Information Center: DTIC Technical Reports database
3
Directory of Open Access Journals: DOAJ Articles
3
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3
MDPI Open Access Publishing
2
University of St Andrews: Research Portal
2
DataCite
1
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
1
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
1
Kyoto University Research Information Repository (KURENAI)
1
Magnolia press
1
North Carolina Agricultural and Technical State University: NC A&T SU Bluford Library's Aggie Digital Collections and Scholarship
1
Old Dominion University: ODU Digital Commons
1
The University of Texas at Austin: Texas ScholarWorks
1
University of Colorado, Boulder: CU Scholar
1
University of Michigan: Deep Blue
1
University of North Texas: UNT Digital Library
1
University of South Carolina Libraries: Scholar Commons
1
University of Washington, Seattle: ResearchWorks
1