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• Aquatic Commons (23)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (5)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (3)
• Biodiversity Heritage Library, United States (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (2)
• Cambridge University Engineering Department Publications Database (13)
• CentAUR: Central Archive University of Reading - UK (1)
• Center for Jewish History Digital Collections (1)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (523)
• DRUM (Digital Repository at the University of Maryland) (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (6)
• Funes: Repositorio digital de documentos en Educación Matemática - Colombia (1)
• Helda - Digital Repository of University of Helsinki (28)
• Indian Institute of Science - Bangalore - Índia (7)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (1)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (20)
• Queensland University of Technology - ePrints Archive (342)
• Repositorio Institucional de la Universidad Nacional Agraria (1)
• Universidad del Rosario, Colombia (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• University of Michigan (5)