Content Provider
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Johns Hopkins University Press
66
Johns Hopkins University Press (via Crossref)
87
Longwoods Publishing (via Crossref)
6
Maad Rayan Publishing Company (via Crossref)
1
Mark Allen (via Crossref)
8
Mary Ann Liebert, Inc., publishers
4
Mary Ann Liebert, Inc., publishers (via Crossref)
6
NIST Publications (National Institute of Standards and Technology - via Crossref)
5
OECD iLibrary (via Crossref)
33
Opin vísindi (Iceland)
7
Ovid
3
Ovid (via Crossref)
51
Oxford University Press
29
Oxford University Press (via Crossref)
299
PUB - Publications at Bielefeld University
1
PUBLISSO Fachrepositorium Lebenswissenschaften (ZB MED)
2
PeerJ Publishing
1
Royal Society of Chemistry
8
SAGE Publications
28
SAGE Publications (via Crossref)
166
Scandinavian University Press
4
Scandinavian University Press (via Crossref)
131
Schweizerbart Science Publishers
4
Schweizerbart Science Publishers (via Crossref)
19
SciPress (via Crossref)
5
ScienceDirect (Elsevier - via Crossref)
3,235
ScienceDirect (Elsevier)
1,627
Sciendo (de Gruyter - via CrossRef)
3
Scientific Research Publishing (SCIRP Open Access - via Crossref)
58
Scientific Research Publishing (SCIRP Open Access)
1
Springer Nature
2
Springer Nature (via Crossref)
2,874
Stockholm University Press (via Crossref)
1
The BMJ
101
The BMJ (via Crossref)
58
The British Academy (via Crossref)
3
The Royal Society
2
The Royal Society (via Crossref)
5
The University of Queensland: UQ eSpace
23
UI Press - University of Illinois Press (via Crossref)
1
United Nations Publications (via Crossref)
3
University Press of Florida (via Crossref)
2
University of California Press
2
University of California Press (via Crossref)
44
University of Chicago Press (via Crossref)
15
University of Liège: ORBi (Open Repository and Bibliography)
4
University of Nottingham: Repository@Nottingham
3
University of St Andrews: Digital Research Repository
1
University of Stirling: Stirling Digital Research Repository
4
University of Toronto Press (U Toronto Press - via Crossref)
26
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