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• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• Biodiversity Heritage Library, United States (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (16)
• Center for Jewish History Digital Collections (2)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (161)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (10)
• National Center for Biotechnology Information - NCBI (1)
• Publishing Network for Geoscientific & Environmental Data (557)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (1)
• Queensland University of Technology - ePrints Archive (1)
• Universidade Federal do Pará (1)
• University of Michigan (245)