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• Aberystwyth University Repository - Reino Unido (3)
• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (2)
• Adam Mickiewicz University Repository (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 (1)
• Aquatic Commons (35)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (4)
• Archive of European Integration (48)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Aston University Research Archive (7)
• Biblioteca Digital da Câmara dos Deputados (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (6)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (5)
• Biodiversity Heritage Library, United States (10)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (41)
• Brock University, Canada (14)
• Bucknell University Digital Commons - Pensilvania - USA (4)
• Bulgarian Digital Mathematics Library at IMI-BAS (2)
• CaltechTHESIS (2)
• Cambridge University Engineering Department Publications Database (4)
• CentAUR: Central Archive University of Reading - UK (30)
• Central European University - Research Support Scheme (3)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (18)
• Cochin University of Science & Technology (CUSAT), India (1)
• Coffee Science - Universidade Federal de Lavras (1)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (8)
• CORA - Cork Open Research Archive - University College Cork - Ireland (1)
• CUNY Academic Works (2)
• Dalarna University College Electronic Archive (1)
• Digital Archives@Colby (2)
• Digital Commons - Michigan Tech (3)
• Digital Commons @ DU | University of Denver Research (3)
• Digital Commons at Florida International University (5)
• Digital Peer Publishing (1)
• DigitalCommons - The University of Maine Research (5)
• DigitalCommons@The Texas Medical Center (13)
• DigitalCommons@University of Nebraska - Lincoln (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (2)
• Duke University (5)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (9)
• Harvard University (7)
• Helda - Digital Repository of University of Helsinki (9)
• Indian Institute of Science - Bangalore - Índia (5)
• Instituto Politécnico do Porto, Portugal (1)
• Memorial University Research Repository (2)
• National Center for Biotechnology Information - NCBI (10)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (2)
• Portal de Revistas Científicas Complutenses - Espanha (2)
• Publishing Network for Geoscientific & Environmental Data (72)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (29)
• Queensland University of Technology - ePrints Archive (26)
• Repositorio Institucional de la Universidad Pública de Navarra - Espanha (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (25)
• School of Medicine, Washington University, United States (5)
• South Carolina State Documents Depository (3)
• Universidad Autónoma de Nuevo León, Mexico (3)
• Universidad de Alicante (1)
• Universidade Complutense de Madrid (2)
• Universidade de Lisboa - Repositório Aberto (1)
• Universidade Federal do Pará (3)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• Université de Lausanne, Switzerland (1)
• Université de Montréal, Canada (1)
• University of Connecticut - USA (1)
• University of Michigan (388)
• University of Queensland eSpace - Australia (15)
• WestminsterResearch - UK (3)