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• Aberdeen University (1)
• Aberystwyth University Repository - Reino Unido (1)
• Academic Research Repository at Institute of Developing Economies (1)
• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
• Andina Digital - Repositorio UASB-Digital - Universidade Andina Simón Bolívar (1)
• Applied Math and Science Education Repository - Washington - USA (33)
• Aquatic Commons (7)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Aston University Research Archive (1)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (2)
• 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 (35)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (38)
• Boston University Digital Common (1)
• Brock University, Canada (2)
• Bucknell University Digital Commons - Pensilvania - USA (4)
• CaltechTHESIS (1)
• Cambridge University Engineering Department Publications Database (4)
• CentAUR: Central Archive University of Reading - UK (16)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (5)
• Cochin University of Science & Technology (CUSAT), India (1)
• CORA - Cork Open Research Archive - University College Cork - Ireland (2)
• Dalarna University College Electronic Archive (2)
• Digital Archives@Colby (1)
• Digital Commons - Michigan Tech (2)
• Digital Commons - Montana Tech (1)
• Digital Commons @ DU | University of Denver Research (8)
• Digital Commons at Florida International University (1)
• DigitalCommons@The Texas Medical Center (6)
• DigitalCommons@University of Nebraska - Lincoln (5)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (2)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
• Greenwich Academic Literature Archive - UK (1)
• Harvard University (8)
• Helda - Digital Repository of University of Helsinki (3)
• Línguas & Letras - Unoeste (1)
• Memoria Académica - FaHCE, UNLP - Argentina (13)
• Ministerio de Cultura, Spain (9)
• National Center for Biotechnology Information - NCBI (2)
• Portal de Revistas Científicas Complutenses - Espanha (41)
• Publishing Network for Geoscientific & Environmental Data (12)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (22)
• Queensland University of Technology - ePrints Archive (27)
• Repositorio de la Universidad de Cuenca (1)
• Repositório digital da Fundação Getúlio Vargas - FGV (1)
• Repositorio Institucional de la Universidad de Málaga (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (2)
• Savoirs UdeS : plateforme de diffusion de la production intellectuelle de l’Université de Sherbrooke - Canada (1)
• Universidad de Alicante (1)
• Universidad del Rosario, Colombia (136)
• Universidad Politécnica de Madrid (27)
• Universidade de Lisboa - Repositório Aberto (1)
• Universidade Metodista de São Paulo (9)
• Universitat de Girona, Spain (1)
• Université de Lausanne, Switzerland (6)
• Université de Montréal, Canada (1)
• University of Michigan (410)
• University of Queensland eSpace - Australia (2)
• University of Washington (1)
• WestminsterResearch - UK (3)