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• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• Biodiversity Heritage Library, United States (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (9)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (269)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (10)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
• Helvia: Repositorio Institucional de la Universidad de Córdoba (1)
• Portal de Revistas Científicas Complutenses - Espanha (4)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (1)
• Université de Montréal, Canada (1)
• University of Innsbruck Digital Library - Austria (2)
• University of Michigan (88)