Content Provider
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
30
Biodiversity Heritage Library (BHL)
2
University of Copenhagen: Research
2
Aarhus University: Research
1
CyberLeninka (Scientific Electronic Library)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Digital.CSIC (Spanish National Research Council)
1
Ghent University Academic Bibliography
1
HELDA – University of Helsinki Open Repository
1
Hathi Trust Digital Library
1
I-Revues (E-Journals, INIST-CNRS)
1
Institut national de la recherche scientifique, Québec: Espace INRS
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
The Czech Academy of Sciences: Publication Activity (ASEP)
1
University of Calgary Journal Hosting
1
Unknown
1