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• Aquatic Commons (93)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (6)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (7)
• Aston University Research Archive (1)
• Biblioteca Digital da Câmara dos Deputados (6)
• Biblioteca Digital de la Universidad Católica Argentina (3)
• Biodiversity Heritage Library, United States (13)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (30)
• Cambridge University Engineering Department Publications Database (1)
• Center for Jewish History Digital Collections (49)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (1)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (442)
• Düsseldorfer Dokumenten- und Publikationsservice (2)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (2)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (2)
• Harvard University (2)
• Helda - Digital Repository of University of Helsinki (22)
• Indian Institute of Science - Bangalore - Índia (7)
• Institutional Repository of Leibniz University Hannover (2)
• Portal de Revistas Científicas Complutenses - Espanha (4)
• Publishing Network for Geoscientific & Environmental Data (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (1)
• Queensland University of Technology - ePrints Archive (14)
• Repositório Científico da Universidade de Évora - Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (1)
• Universidad del Rosario, Colombia (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (6)
• University of Michigan (272)
• University of Queensland eSpace - Australia (1)