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• Academic Archive On-line (Stockholm University; Sweden) (1)
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• Archive of European Integration (2)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (2)
• Biodiversity Heritage Library, United States (19)
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• BORIS: Bern Open Repository and Information System - Berna - Suiça (2)
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• Brock University, Canada (11)
• Bucknell University Digital Commons - Pensilvania - USA (1)
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• Center for Jewish History Digital Collections (2)
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• Digital Commons @ DU | University of Denver Research (1)
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• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (59)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (4)
• Queensland University of Technology - ePrints Archive (16)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (1)
• South Carolina State Documents Depository (28)
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