Content Provider
Colecciones digitales - Biblioteca Virtual del Banco de la República
20
DataCite Metadata Store (German National Library of Science and Technology)
13
NOAA NCEI Environmental Data Archive (via DataONE)
7
North Dakota State University (NDSU): Digital Horizons
7
University of Washington, Seattle: Digital Collections
4
Arctic Data Center (via DataONE)
3
Cambridge University Press
3
Directory of Open Access Journals: DOAJ Articles
3
Knowledge Network for Biocomplexity (via DataONE)
3
NASA Technical Reports Server (NTRS)
3
University of Lethbridge Digitized Collections
3
Hunter Library Digital Collections (Western Carolina University)
2
University of Nebraska-Lincoln: DigitalCommons@UNL
2
AU Digital Research Archive (American University)
1
David Rumsey Historical Map Collection (Cartography Associates)
1
Environmental Data Initiative (via DataONE)
1
Euskal Doktorego Tesien Bilduma (eDTB) - Repositorio de Tesis Doctorales
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
Illinois State Library: Illinois Digital Archives
1
Journals of Faculty of Arts, University of Ljubljana
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
Natural Environment Research Council: NERC Open Research Archive
1
RUA - Repositorio Institucional de la Universidad de Alicante
1
Repositório da Universidade Nova de Lisboa (UNL)
1
Universidad de Huelva: Arias Montano
1
Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University
1
Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP
1
Universidade Federal do Rio Grande do Sul (UFRGS): Lume
1
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB
1
University College Dublin: UCD Digital Library
1
University of São Paulo: Digital Library of Theses and Dissertations
1
Università degli Studi di Bari Aldo Moro: CINECA IRIS
1
Università degli Studi di Messina: IRIS
1
Università di Macerata: UniMC - Pubblicazioni Aperte Digitali (U-PAD)
1
Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca
1
WikiBooks - Open-content textbooks
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1
Zenodo
1