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• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• Aquatic Commons (6)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (3)
• Biblioteca Digital de la Universidad Católica Argentina (1)
• Biodiversity Heritage Library, United States (8)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (1)
• Boston University Digital Common (6)
• Brock University, Canada (64)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• Center for Jewish History Digital Collections (48)
• Cornell: DigitalCommons@ILR (1)
• Digital Commons @ Winthrop University (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (2)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
• Harvard University (56)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (1)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (3)
• Queensland University of Technology - ePrints Archive (7)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
• Savoirs UdeS : plateforme de diffusion de la production intellectuelle de l’Université de Sherbrooke - Canada (1)
• School of Medicine, Washington University, United States (15)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Universidad de Alicante (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• Université de Lausanne, Switzerland (1)
• Université de Montréal, Canada (1)
• Université Laval Mémoires et thèses électroniques (1)
• University of Michigan (731)
• USA Library of Congress (9)