Content Provider
Cambridge University Press
1,700
Directory of Open Access Journals: DOAJ Articles
1,358
ScienceDirect (Elsevier - via Crossref)
714
DataCite Metadata Store (German National Library of Science and Technology)
438
ScienceDirect (Elsevier)
278
Informa (via Crossref)
251
eCite UTAS (University of Tasmania)
212
Biodiversity Heritage Library (BHL)
172
Research Data Australia (Australian National Data Service - ANDS)
166
Informa
107
Geological Society of London: Figshare
78
Springer Nature (via Crossref)
77
Defense Technical Information Center: DTIC Technical Reports database
66
University of California: eScholarship
66
Lund University Publications (LUP)
59
OhioLINK: Electronic Theses and Dissertations Center
57
Portland State University: PDXScholar
56
Ohio University Library Digital Archives
53
Wiley Online Library
40
University of Chicago Press (via Crossref)
38
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
36
Imperial College London: Spiral
34
Wiley Online Library (via Crossref)
31
Unknown
30
Rice University: Digital Scholarship Archive
29
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
25
University of Chicago Press
23
The University of Adelaide: Digital Library
22
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
21
Columbia University: Academic Commons
19
Central Washington University: ScholarWorks
16
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
16
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
16
Texas Tech University: TTU DSpace Repository
16
University of California Press
15
The University of Maine: DigitalCommons@UMaine
13
The University of Queensland: UQ eSpace
13
Montclair State University Digital Commons
12
University of Leicester: Leicester Research Archive (LRA)
11
University of Michigan: Digital Collections
11
DIAL@USL-B (Université Saint-Louis, Bruxelles)
10
LSU Digital Commons (Louisiana State University)
10
University of Nebraska-Lincoln: DigitalCommons@UNL
10
Digital Commons University of South Florida (USF)
9
University of Massachusetts: ScholarWorks@UMass Amherst
9
University of South Florida St. Petersburg: Digital USFSP
9
De Gruyter (via Crossref)
8
University of California Press (via Crossref)
8
Utrecht University Repository
8
Curtin University: espace
7
more ...