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• 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 (2)
• Applied Math and Science Education Repository - Washington - USA (4)
• Aquatic Commons (13)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (3)
• Archive of European Integration (2)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (6)
• Biblioteca Valenciana Digital - Ministerio de Educación, Cultura y Deporte - Valencia - Espanha (2)
• Biodiversity Heritage Library, United States (86)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (21)
• Boston University Digital Common (2)
• Brock University, Canada (5)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• Cambridge University Engineering Department Publications Database (43)
• CentAUR: Central Archive University of Reading - UK (62)
• Center for Jewish History Digital Collections (1)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (32)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (1)
• Digital Commons @ DU | University of Denver Research (1)
• Digital Commons @ Winthrop University (1)
• Digital Repository at Iowa State University (1)
• DigitalCommons@University of Nebraska - Lincoln (4)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (2)
• Diposit Digital de la UB - Universidade de Barcelona (4)
• Duke University (2)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (18)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (2)
• Harvard University (5)
• Helda - Digital Repository of University of Helsinki (3)
• Indian Institute of Science - Bangalore - Índia (22)
• National Center for Biotechnology Information - NCBI (6)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (9)
• Publishing Network for Geoscientific & Environmental Data (18)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (36)
• Queensland University of Technology - ePrints Archive (26)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (26)
• Universidad Autónoma de Nuevo León, Mexico (3)
• Universidad Politécnica de Madrid (10)
• Universitat de Girona, Spain (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (3)
• Université de Lausanne, Switzerland (1)
• Université de Montréal, Canada (2)
• University of Michigan (469)
• WestminsterResearch - UK (2)