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• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• Aquatic Commons (401)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• Archive of European Integration (1)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (9)
• Biblioteca Digital da Câmara dos Deputados (5)
• Biblioteca Digital de la Universidad Católica Argentina (5)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (3)
• Biodiversity Heritage Library, United States (17)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (8)
• CaltechTHESIS (1)
• Cambridge University Engineering Department Publications Database (1)
• Center for Jewish History Digital Collections (40)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (1)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (182)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
• Harvard University (1)
• Helda - Digital Repository of University of Helsinki (23)
• Indian Institute of Science - Bangalore - Índia (11)
• Memoria Académica - FaHCE, UNLP - Argentina (4)
• Publishing Network for Geoscientific & Environmental Data (9)
• Queensland University of Technology - ePrints Archive (13)
• SAPIENTIA - Universidade do Algarve - Portugal (1)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (2)
• University of Michigan (253)