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• Aberdeen University (3)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• Applied Math and Science Education Repository - Washington - USA (1)
• Aquatic Commons (3)
• Aston University Research Archive (6)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (24)
• Biodiversity Heritage Library, United States (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (10)
• Boston University Digital Common (3)
• Brock University, Canada (3)
• Bucknell University Digital Commons - Pensilvania - USA (3)
• CentAUR: Central Archive University of Reading - UK (3)
• Center for Jewish History Digital Collections (6)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (4)
• Cochin University of Science & Technology (CUSAT), India (1)
• CORA - Cork Open Research Archive - University College Cork - Ireland (3)
• Dalarna University College Electronic Archive (2)
• Digital Commons - Michigan Tech (1)
• Digital Commons - Montana Tech (1)
• Digital Commons at Florida International University (4)
• Digital Repository at Iowa State University (1)
• DigitalCommons - The University of Maine Research (4)
• DigitalCommons@The Texas Medical Center (7)
• DigitalCommons@University of Nebraska - Lincoln (2)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (34)
• DRUM (Digital Repository at the University of Maryland) (3)
• Duke University (3)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (2)
• Helda - Digital Repository of University of Helsinki (1)
• Illinois Digital Environment for Access to Learning and Scholarship Repository (1)
• Indian Institute of Science - Bangalore - Índia (2)
• Ministerio de Cultura, Spain (2)
• National Center for Biotechnology Information - NCBI (8)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (1)
• Portal de Revistas Científicas Complutenses - Espanha (6)
• Publishing Network for Geoscientific & Environmental Data (19)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (7)
• Queensland University of Technology - ePrints Archive (38)
• Repositorio Académico de la Universidad Nacional de Costa Rica (3)
• Repositorio Institucional de la Universidad de El Salvador (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (6)
• Research Open Access Repository of the University of East London. (1)
• School of Medicine, Washington University, United States (3)
• South Carolina State Documents Depository (1)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Universidad del Rosario, Colombia (5)
• Universidad Politécnica de Madrid (2)
• Universitat de Girona, Spain (1)
• University of Michigan (184)
• University of Queensland eSpace - Australia (2)