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• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
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• Aston University Research Archive (2)
• 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)
• Biodiversity Heritage Library, United States (33)
• Blue Tiger Commons - Lincoln University - USA (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (7)
• Brock University, Canada (45)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• CentAUR: Central Archive University of Reading - UK (1)
• CUNY Academic Works (2)
• Dalarna University College Electronic Archive (1)
• Digital Commons @ DU | University of Denver Research (1)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (6)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
• Harvard University (87)
• Ministerio de Cultura, Spain (1)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (1)
• Repositorio Institucional Universidad EAFIT - Medelin - Colombia (1)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
• School of Medicine, Washington University, United States (13)
• Scielo Saúde Pública - SP (1)
• Universidad de Alicante (1)
• Universidad del Rosario, Colombia (1)
• Universidad Politécnica de Madrid (1)
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• Université de Lausanne, Switzerland (10)
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• Université Laval Mémoires et thèses électroniques (1)
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