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• Aberystwyth University Repository - Reino Unido (3)
• Aquatic Commons (2)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (2)
• Aston University Research Archive (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (2)
• Biodiversity Heritage Library, United States (28)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (4)
• Boston University Digital Common (3)
• Brock University, Canada (2)
• Bucknell University Digital Commons - Pensilvania - USA (2)
• CaltechTHESIS (3)
• Cambridge University Engineering Department Publications Database (7)
• CentAUR: Central Archive University of Reading - UK (69)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (8)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (1)
• CORA - Cork Open Research Archive - University College Cork - Ireland (3)
• Dalarna University College Electronic Archive (4)
• Digital Archives@Colby (3)
• Digital Commons @ DU | University of Denver Research (2)
• Digital Commons @ Winthrop University (1)
• Digital Peer Publishing (1)
• DRUM (Digital Repository at the University of Maryland) (2)
• Duke University (2)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Harvard University (521)
• Helda - Digital Repository of University of Helsinki (9)
• Illinois Digital Environment for Access to Learning and Scholarship Repository (1)
• Massachusetts Institute of Technology (2)
• Ministerio de Cultura, Spain (20)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (51)
• Queensland University of Technology - ePrints Archive (51)
• ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal (1)
• Repositório Científico da Universidade de Évora - Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (10)
• Research Open Access Repository of the University of East London. (1)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
• School of Medicine, Washington University, United States (5)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Universidad de Alicante (1)
• Universidad Politécnica de Madrid (1)
• Universidade de Lisboa - Repositório Aberto (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• Université de Lausanne, Switzerland (3)
• Université de Montréal, Canada (3)
• University of Michigan (40)
• University of Queensland eSpace - Australia (2)
• USA Library of Congress (38)
• WestminsterResearch - UK (3)