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• Aberdeen University (1)
• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (3)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (5)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (4)
• Aquatic Commons (41)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• Archive of European Integration (4)
• 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: (19)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (16)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (10)
• Bibloteca do Senado Federal do Brasil (135)
• Biodiversity Heritage Library, United States (3)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (53)
• Boston University Digital Common (1)
• Brock University, Canada (6)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• CentAUR: Central Archive University of Reading - UK (41)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (18)
• CORA - Cork Open Research Archive - University College Cork - Ireland (1)
• Digital Archives@Colby (3)
• Digital Commons - Michigan Tech (1)
• Digital Commons - Montana Tech (1)
• Digital Peer Publishing (1)
• Digital Repository at Iowa State University (1)
• DigitalCommons - The University of Maine Research (1)
• DigitalCommons@University of Nebraska - Lincoln (26)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (3)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (9)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
• Greenwich Academic Literature Archive - UK (1)
• Helda - Digital Repository of University of Helsinki (6)
• Indian Institute of Science - Bangalore - Índia (12)
• Instituto Politécnico do Porto, Portugal (1)
• Memoria Académica - FaHCE, UNLP - Argentina (3)
• Ministerio de Cultura, Spain (3)
• National Center for Biotechnology Information - NCBI (11)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (37)
• Publishing Network for Geoscientific & Environmental Data (231)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (31)
• Queensland University of Technology - ePrints Archive (23)
• Repositório digital da Fundação Getúlio Vargas - FGV (2)
• Repositório Institucional da Universidade de Aveiro - Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (67)
• Research Open Access Repository of the University of East London. (1)
• SAPIENTIA - Universidade do Algarve - Portugal (4)
• South Carolina State Documents Depository (2)
• Universidad de Alicante (6)
• Universidad Politécnica de Madrid (2)
• Universidade de Lisboa - Repositório Aberto (1)
• Universidade Federal do Pará (2)
• Universitat de Girona, Spain (3)
• Université de Montréal, Canada (4)
• University of Connecticut - USA (1)
• University of Michigan (18)