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• Aberdeen University (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (2)
• Aquatic Commons (15)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (96)
• Archive of European Integration (30)
• Biblioteca Digital da Câmara dos Deputados (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (4)
• Biblioteca Digital de la Universidad Católica Argentina (1)
• Biodiversity Heritage Library, United States (2)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (144)
• CaltechTHESIS (1)
• CentAUR: Central Archive University of Reading - UK (3)
• Center for Jewish History Digital Collections (3)
• Digital Peer Publishing (10)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (421)
• Diposit Digital de la UB - Universidade de Barcelona (1)
• Dokumentenserver der Akademie der Wissenschaften zu Göttingen (3)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• eScholarship Repository - University of California (1)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (32)
• Indian Institute of Science - Bangalore - Índia (3)
• Institutional Repository of Leibniz University Hannover (1)
• Lume - Repositório Digital da Universidade Federal do Rio Grande do Sul (1)
• Memoria Académica - FaHCE, UNLP - Argentina (3)
• Ministerio de Cultura, Spain (1)
• National Center for Biotechnology Information - NCBI (2)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (2)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (11)
• Queensland University of Technology - ePrints Archive (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (9)
• SerWisS - Server für Wissenschaftliche Schriften der Fachhochschule Hannover (4)
• Universidad del Rosario, Colombia (6)
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• Universitätsbibliothek Kassel, Universität Kassel, Germany (30)
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• University of Michigan (98)
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