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• Academic Archive On-line (Stockholm University; Sweden) (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (2)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (2)
• Archive of European Integration (1)
• Aston University Research Archive (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (9)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (5)
• Biodiversity Heritage Library, United States (2)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (7)
• Brock University, Canada (23)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• Bulgarian Digital Mathematics Library at IMI-BAS (1)
• CentAUR: Central Archive University of Reading - UK (9)
• Digital Commons @ DU | University of Denver Research (1)
• Digital Commons @ Winthrop University (1)
• DigitalCommons - The University of Maine Research (1)
• DigitalCommons@University of Nebraska - Lincoln (1)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
• Harvard University (4)
• Instituto Politécnico do Porto, Portugal (1)
• Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (1)
• Publishing Network for Geoscientific & Environmental Data (747)
• Repositório Institucional da Universidade de Aveiro - Portugal (1)
• Scielo Saúde Pública - SP (2)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Université de Lausanne, Switzerland (6)
• University of Michigan (148)
• University of Queensland eSpace - Australia (4)
• USA Library of Congress (3)