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• Academic Archive On-line (Stockholm University; Sweden) (3)
• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (5)
• Aquatic Commons (3)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (5)
• Biodiversity Heritage Library, United States (2)
• Bioline International (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (38)
• Brock University, Canada (1)
• Cambridge University Engineering Department Publications Database (2)
• CentAUR: Central Archive University of Reading - UK (15)
• Center for Jewish History Digital Collections (5)
• Chapman University Digital Commons - CA - USA (1)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (9)
• Digital Archives@Colby (1)
• Digital Commons @ DU | University of Denver Research (1)
• Digital Commons at Florida International University (13)
• Digital Peer Publishing (1)
• DRUM (Digital Repository at the University of Maryland) (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (3)
• Harvard University (5)
• Helda - Digital Repository of University of Helsinki (767)
• Indian Institute of Science - Bangalore - Índia (1)
• Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (1)
• Publishing Network for Geoscientific & Environmental Data (18)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (20)
• Queensland University of Technology - ePrints Archive (17)
• Repositório Alice (Acesso Livre à Informação Científica da Embrapa / Repository Open Access to Scientific Information from Embrapa) (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (2)
• SAPIENTIA - Universidade do Algarve - Portugal (1)
• Universidade Federal do Pará (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (2)
• University of Michigan (43)
• University of Queensland eSpace - Australia (3)
• USA Library of Congress (2)