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• Aquatic Commons (760)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Biblioteca Digital de la Universidad Católica Argentina (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (7)
• Cambridge University Engineering Department Publications Database (1)
• Center for Jewish History Digital Collections (77)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (5)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (9)
• Helda - Digital Repository of University of Helsinki (32)
• Indian Institute of Science - Bangalore - Índia (10)
• Institutional Repository of Leibniz University Hannover (39)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (1)
• Queensland University of Technology - ePrints Archive (20)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• University of Michigan (35)