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• Aberystwyth University Repository - Reino Unido (1)
• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (3)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
• Applied Math and Science Education Repository - Washington - USA (1)
• Aquatic Commons (1)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (2)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (2)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (3)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (6)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (1)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (28)
• Brock University, Canada (3)
• CaltechTHESIS (2)
• Cambridge University Engineering Department Publications Database (36)
• CentAUR: Central Archive University of Reading - UK (26)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (38)
• Cochin University of Science & Technology (CUSAT), India (1)
• CORA - Cork Open Research Archive - University College Cork - Ireland (1)
• Dalarna University College Electronic Archive (2)
• Digital Archives@Colby (2)
• Digital Peer Publishing (1)
• DigitalCommons@The Texas Medical Center (3)
• DigitalCommons@University of Nebraska - Lincoln (3)
• Duke University (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (4)
• Greenwich Academic Literature Archive - UK (4)
• Helda - Digital Repository of University of Helsinki (3)
• Indian Institute of Science - Bangalore - Índia (27)
• Instituto Politécnico do Porto, Portugal (2)
• Ministerio de Cultura, Spain (2)
• Publishing Network for Geoscientific & Environmental Data (617)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (21)
• Queensland University of Technology - ePrints Archive (53)
• Repositório Digital da UNIVERSIDADE DA MADEIRA - Portugal (2)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (40)
• Research Open Access Repository of the University of East London. (1)
• Universidad Politécnica de Madrid (1)
• Universitat de Girona, Spain (1)
• Université de Lausanne, Switzerland (2)
• University of Connecticut - USA (1)
• University of Michigan (12)
• WestminsterResearch - UK (2)