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• Aberystwyth University Repository - Reino Unido (1)
• Biblioteca Digital da Câmara dos Deputados (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (896)
• Cambridge University Engineering Department Publications Database (2)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (5)
• DRUM (Digital Repository at the University of Maryland) (1)
• Duke University (2)
• Greenwich Academic Literature Archive - UK (1)
• Helda - Digital Repository of University of Helsinki (1)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (63)
• Queensland University of Technology - ePrints Archive (25)
• University of Cumbria Insight - United Kingdom (1)