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• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (3)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (2)
• Archive of European Integration (9)
• Aston University Research Archive (2)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
• Biblioteca de Teses e Dissertações da USP (1)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (3)
• Biodiversity Heritage Library, United States (28)
• Blue Tiger Commons - Lincoln University - USA (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (6)
• Brock University, Canada (44)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• CentAUR: Central Archive University of Reading - UK (2)
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• Dalarna University College Electronic Archive (1)
• Digital Archives@Colby (2)
• Digital Commons @ DU | University of Denver Research (1)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (3)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (2)
• Harvard University (90)
• Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (13)
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• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (2)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (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 (11)
• Universidad de Alicante (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• Université de Lausanne, Switzerland (4)
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• University of Michigan (714)
• University of Queensland eSpace - Australia (3)
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