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• Aquatic Commons (134)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (3)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (5)
• Biblioteca Digital da Câmara dos Deputados (5)
• Biblioteca Digital de la Universidad Católica Argentina (4)
• Biodiversity Heritage Library, United States (7)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (55)
• CaltechTHESIS (2)
• Cambridge University Engineering Department Publications Database (1)
• Center for Jewish History Digital Collections (155)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (1)
• Dalarna University College Electronic Archive (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (148)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (39)
• Harvard University (1)
• Helda - Digital Repository of University of Helsinki (36)
• Indian Institute of Science - Bangalore - Índia (9)
• Portal de Revistas Científicas Complutenses - Espanha (2)
• Publishing Network for Geoscientific & Environmental Data (1)
• Queensland University of Technology - ePrints Archive (21)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (24)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Universidad del Rosario, Colombia (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (3)
• University of Innsbruck Digital Library - Austria (2)
• University of Michigan (332)