Content Provider
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
154
DataCite Metadata Store (German National Library of Science and Technology)
112
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
103
The Portal to Texas History (University of North Texas)
58
Zenodo
55
Directory of Open Access Journals: DOAJ Articles
50
Unknown
43
Defense Technical Information Center: DTIC Technical Reports database
27
Biodiversity Heritage Library (BHL)
23
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
21
USGS Science Data Catalog (via DataONE)
20
Australian National University: ANU Digital Collections
16
Magnolia press
16
Universidad de Chile: Repositorio académico
15
Harvard University: Harvard Collections
14
Institut national des sciences de l'Univers: HAL-INSU
14
Repositório do INPA
12
Research Data Australia (Australian National Data Service - ANDS)
12
University of São Paulo: Digital Library of Theses and Dissertations
12
Université de Nantes: HAL-UNIV-NANTES
12
PANGAEA - Data Publisher for Earth & Environmental Science
11
National Library of Australia: Digital Collections
10
ORNL DAAC (via DataONE)
9
MDPI Open Access Publishing
8
University of North Texas: UNT Digital Library
8
Ghent University Academic Bibliography
7
IRD (Institute de recherche pour le développement): Horizon
7
University of California: eScholarship
7
Digital.CSIC (Spanish National Research Council)
6
Lund University Publications (LUP)
6
Pensoft Publishers
6
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
6
RI FURG (Repositório da Universidade Federal do Rio Grande)
5
Repositorio Digital Institucional - Universidad de Buenos Aires (RDI UBA)
5
Universidad de Chile: Captura
5
Universidade Federal do Rio Grande do Sul (UFRGS): Lume
5
University of Nebraska-Lincoln: DigitalCommons@UNL
5
David Rumsey Historical Map Collection (Cartography Associates)
4
HAL Sorbonne Université
4
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
4
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences)
4
Pontificia Universidad Católica de Chile: Repositorio UC
4
Portal de Periódicos da UFRJ (Universidade Federal do Rio de Janeiro)
4
SciELO Brazil (Scientific Electronic Library Online)
4
University of Copenhagen: Research
4
University of Groningen research database
4
University of St Andrews: Research Portal
4
University of Washington, Seattle: Digital Collections
4
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
4
Wageningen UR (University & Research Centre): Digital Library
4
more ...