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• KUPS-Datenbank - Universität zu Köln - Kölner UniversitätsPublikationsServer (2)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (24)
• Archive of European Integration (10)
• Aston University Research Archive (2)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (1)
• Biblioteca Digital da Câmara dos Deputados (1)
• Biblioteca Valenciana Digital - Ministerio de Educación, Cultura y Deporte - Valencia - Espanha (2)
• Biodiversity Heritage Library, United States (2)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (247)
• CentAUR: Central Archive University of Reading - UK (5)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (4)
• CORA - Cork Open Research Archive - University College Cork - Ireland (1)
• Dalarna University College Electronic Archive (1)
• Digital Peer Publishing (11)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (213)
• Diposit Digital de la UB - Universidade de Barcelona (1)
• Duke University (1)
• Düsseldorfer Dokumenten- und Publikationsservice (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (9)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (3)
• Harvard University (1)
• Helda - Digital Repository of University of Helsinki (6)
• Martin Luther Universitat Halle Wittenberg, Germany (1)
• Portal de Revistas Científicas Complutenses - Espanha (2)
• Publishing Network for Geoscientific & Environmental Data (42)
• Queensland University of Technology - ePrints Archive (22)
• Repositório Digital da UNIVERSIDADE DA MADEIRA - Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (1)
• SerWisS - Server für Wissenschaftliche Schriften der Fachhochschule Hannover (5)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (4)
• Université de Montréal, Canada (2)
• University of Innsbruck Digital Library - Austria (1)
• University of Michigan (348)
• USA Library of Congress (2)