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• Aberystwyth University Repository - Reino Unido (1)
• Applied Math and Science Education Repository - Washington - USA (2)
• Aquatic Commons (112)
• Archive of European Integration (4)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Aston University Research Archive (4)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (2)
• Biblioteca Digital da Câmara dos Deputados (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (1)
• Biodiversity Heritage Library, United States (3)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (5)
• Boston University Digital Common (4)
• Brock University, Canada (6)
• Bucknell University Digital Commons - Pensilvania - USA (2)
• CaltechTHESIS (1)
• Cambridge University Engineering Department Publications Database (2)
• CentAUR: Central Archive University of Reading - UK (4)
• Center for Jewish History Digital Collections (8)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (1)
• Coffee Science - Universidade Federal de Lavras (1)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (1)
• Cornell: DigitalCommons@ILR (2)
• Digital Commons - Michigan Tech (2)
• Digital Commons @ DU | University of Denver Research (5)
• Digital Commons at Florida International University (26)
• Digital Peer Publishing (1)
• DigitalCommons@The Texas Medical Center (16)
• DigitalCommons@University of Nebraska - Lincoln (4)
• DRUM (Digital Repository at the University of Maryland) (4)
• Duke University (22)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (3)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
• Harvard University (9)
• Helda - Digital Repository of University of Helsinki (7)
• Illinois Digital Environment for Access to Learning and Scholarship Repository (1)
• National Center for Biotechnology Information - NCBI (3)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (1)
• QSpace: Queen's University - Canada (3)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (54)
• Queensland University of Technology - ePrints Archive (57)
• Repositório Digital da UNIVERSIDADE DA MADEIRA - Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (1)
• 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 (1)
• South Carolina State Documents Depository (2)
• Universidad Autónoma de Nuevo León, Mexico (4)
• Universidad Politécnica de Madrid (2)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (2)
• Université de Lausanne, Switzerland (1)
• Université de Montréal, Canada (1)
• University of Michigan (538)
• University of Queensland eSpace - Australia (1)
• University of Washington (3)
• WestminsterResearch - UK (1)