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• Academic Archive On-line (Karlstad University; Sweden) (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (2)
• Applied Math and Science Education Repository - Washington - USA (1)
• Archive of European Integration (1)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (2)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (1)
• Biodiversity Heritage Library, United States (3)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (1)
• Boston University Digital Common (2)
• Brock University, Canada (7)
• CaltechTHESIS (2)
• Cambridge University Engineering Department Publications Database (2)
• Carolina Law Scholarship Repository (1)
• CentAUR: Central Archive University of Reading - UK (10)
• Collection Of Biostatistics Research Archive (2)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (3)
• CORA - Cork Open Research Archive - University College Cork - Ireland (1)
• Digital Archives@Colby (3)
• Digital Commons - Michigan Tech (2)
• Digital Commons @ Winthrop University (4)
• Digital Commons at Florida International University (1)
• DigitalCommons - The University of Maine Research (1)
• DigitalCommons@The Texas Medical Center (5)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (10)
• DRUM (Digital Repository at the University of Maryland) (1)
• Duke University (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (2)
• Greenwich Academic Literature Archive - UK (4)
• Harvard University (18)
• Massachusetts Institute of Technology (1)
• Memoria Académica - FaHCE, UNLP - Argentina (2)
• Ministerio de Cultura, Spain (2)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (675)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (32)
• Queensland University of Technology - ePrints Archive (13)
• ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal (1)
• Repositorio Académico de la Universidad Nacional de Costa Rica (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (6)
• School of Medicine, Washington University, United States (3)
• Universidad Autónoma de Nuevo León, Mexico (4)
• Universidad del Rosario, Colombia (5)
• Universidade Federal do Rio Grande do Norte (UFRN) (1)
• Université de Montréal, Canada (1)
• University of Michigan (124)