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• Aquatic Commons (13)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (3)
• Biblioteca Digital da Câmara dos Deputados (14)
• Biblioteca Digital de la Universidad Católica Argentina (5)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (8)
• Biodiversity Heritage Library, United States (4)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (1)
• Boston University Digital Common (1)
• Cambridge University Engineering Department Publications Database (1)
• Center for Jewish History Digital Collections (176)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (4)
• CORA - Cork Open Research Archive - University College Cork - Ireland (2)
• Digital Commons at Florida International University (1)
• Digital Peer Publishing (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (72)
• Diposit Digital de la UB - Universidade de Barcelona (1)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
• DRUM (Digital Repository at the University of Maryland) (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (451)
• Harvard University (1)
• Helda - Digital Repository of University of Helsinki (3)
• Indian Institute of Science - Bangalore - Índia (1)
• Instituto Politécnico do Porto, Portugal (2)
• Memoria Académica - FaHCE, UNLP - Argentina (2)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (3)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (12)
• Queensland University of Technology - ePrints Archive (19)
• Repositório Científico do Instituto Politécnico de Lisboa - Portugal (1)
• REPOSITORIO DIGITAL IMARPE - INSTITUTO DEL MAR DEL PERÚ, Peru (1)
• Repositório do Centro Hospitalar de Lisboa Central, EPE - Centro Hospitalar de Lisboa Central, EPE, Portugal (2)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (1)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (5)
• SAPIENTIA - Universidade do Algarve - Portugal (2)
• South Carolina State Documents Depository (2)
• Universidad Autónoma de Nuevo León, Mexico (11)
• Universidade de Madeira (1)
• Université de Lausanne, Switzerland (2)
• University of Michigan (165)
• WestminsterResearch - UK (1)