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• Aberdeen University (5)
• Academic Archive On-line (Stockholm University; Sweden) (1)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (5)
• Applied Math and Science Education Repository - Washington - USA (3)
• Aquatic Commons (6)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (13)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (2)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (2)
• Biblioteca Valenciana Digital - Ministerio de Educación, Cultura y Deporte - Valencia - Espanha (3)
• Bibloteca do Senado Federal do Brasil (2)
• Biodiversity Heritage Library, United States (7)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (49)
• Boston University Digital Common (1)
• Brock University, Canada (8)
• CaltechTHESIS (1)
• Cambridge University Engineering Department Publications Database (1)
• CentAUR: Central Archive University of Reading - UK (3)
• Center for Jewish History Digital Collections (2)
• Collection Of Biostatistics Research Archive (1)
• Digital Commons - Michigan Tech (1)
• Digital Peer Publishing (2)
• Digital Repository at Iowa State University (1)
• DigitalCommons@The Texas Medical Center (1)
• DigitalCommons@University of Nebraska - Lincoln (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (90)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
• Duke University (4)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (5)
• Greenwich Academic Literature Archive - UK (1)
• Harvard University (14)
• Indian Institute of Science - Bangalore - Índia (2)
• Martin Luther Universitat Halle Wittenberg, Germany (1)
• Massachusetts Institute of Technology (1)
• Memoria Académica - FaHCE, UNLP - Argentina (3)
• National Center for Biotechnology Information - NCBI (7)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (2)
• Publishing Network for Geoscientific & Environmental Data (9)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (114)
• Queensland University of Technology - ePrints Archive (31)
• Repositório digital da Fundação Getúlio Vargas - FGV (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (11)
• School of Medicine, Washington University, United States (2)
• Universidad Autónoma de Nuevo León, Mexico (2)
• Universidad del Rosario, Colombia (7)
• Universidad Politécnica de Madrid (2)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (10)
• Université de Lausanne, Switzerland (1)
• Université de Montréal, Canada (10)
• University of Michigan (526)