Content Provider
Directory of Open Access Journals: DOAJ Articles
296
ScienceDirect (Elsevier - via Crossref)
145
David Rumsey Historical Map Collection (Cartography Associates)
46
Defense Technical Information Center: DTIC Technical Reports database
44
ScienceDirect (Elsevier)
29
DataCite Metadata Store (German National Library of Science and Technology)
27
University of California Press (via Crossref)
13
Wiley Online Library (via Crossref)
13
Lund University Publications (LUP)
12
Stockholm University: Publications (DiVA)
11
Old Dominion University: ODU Digital Commons
9
University of Calgary Journal Hosting
9
University of California Press
8
USGS Science Data Catalog (via DataONE)
7
University College London: UCL Discovery
6
Wiley Online Library
6
Geological Society of London: Figshare
5
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
5
OhioLINK: Electronic Theses and Dissertations Center
5
University of California: eScholarship
5
University of New Hampshire: Scholars Repository
5
Cambridge University Press
4
University of Nebraska-Lincoln: DigitalCommons@UNL
3
University of North Texas: UNT Digital Library
3
Uppsala University: Publications (DiVA)
3
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Chalmers University of Technology: Chalmers research
2
DIAL@USL-B (Université Saint-Louis, Bruxelles)
2
FAU Digital Collections (Florida Atlantic University Digital Library)
2
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
2
IOP Publishing
2
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
2
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
2
PRISM - University of Calgary Digital Repository
2
The Research Repository @ WVU (West Virginia University)
2
The Royal Society: Figshare
2
UNESDOC - UNESCO Digital Library
2
University of Chicago Press (via Crossref)
2
University of Colorado, Boulder: CU Scholar
2
Boston University: OpenBU
1
Columbia University: Academic Commons
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
Dartmouth Digital Commons (Dartmouth College)
1
De Gruyter (via Crossref)
1
Digital Commons University of South Florida (USF)
1
Edith Cowan University (ECU, Australia): Research Online
1
Florida State University: Publication of Archival Library & Museum Materials
1
Ghent University Academic Bibliography
1
Harvard University: DASH - Digital Access to Scholarship at Harvard
1
Hathi Trust Digital Library
1
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