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• Applied Math and Science Education Repository - Washington - USA (1)
• Archive of European Integration (6)
• Biodiversity Heritage Library, United States (57)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (4)
• Brock University, Canada (18)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• CentAUR: Central Archive University of Reading - UK (4)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (1)
• Dalarna University College Electronic Archive (1)
• Digital Commons - Montana Tech (2)
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• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (1)
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• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (2)
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