Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
881
Arctic Data Center (via DataONE)
67
NOAA NCEI Environmental Data Archive (via DataONE)
20
Unknown
19
Directory of Open Access Journals: DOAJ Articles
12
Research Workspace (via DataONE)
8
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
6
University of Alaska: ScholarWorks@UA
6
HighWire Press (Stanford University)
4
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
3
National Institute of Polar Research Repository, Japan
3
University of California: eScholarship
3
Defense Technical Information Center: DTIC Technical Reports database
2
Frontiers (Publisher)
2
International Arctic Research Center (IARC) Data Archive (via DataONE)
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Arctic Portal Library
1
Canadian Science Publishing (via Crossref)
1
Copernicus Publications: E-Journals
1
Frontiers: Figshare
1
Hiroshima University: Institutional Repository (HiR)
1
Magnolia press
1
Michigan Technological University: Digital Commons @ Michigan Tech
1
OpenAgrar (OA)
1
Oxford University Press
1
PQDT Open: Open Access Dissertations and Theses (ProQuest)
1
PeerJ Publishing
1
PeerJ Publishing (via CrossRef)
1
PubMed Central (PMC)
1
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1
Springer Nature (via Crossref)
1
USGS Science Data Catalog (via DataONE)
1
University of New Hampshire: Scholars Repository
1
University of North Texas: UNT Digital Library
1
University of Rhode Island: DigitalCommons@URI
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1