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• Aquatic Commons (2)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Aston University Research Archive (1)
• Biblioteca Digital da Câmara dos Deputados (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (10)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (3)
• Biblioteca Digital de la Universidad Católica Argentina (2)
• Biodiversity Heritage Library, United States (447)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (77)
• Boston University Digital Common (2)
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• Bulgarian Digital Mathematics Library at IMI-BAS (1)
• Cambridge University Engineering Department Publications Database (2)
• CentAUR: Central Archive University of Reading - UK (33)
• Center for Jewish History Digital Collections (5)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (8)
• Clark Digital Commons--knowledge; creativity; research; and innovation of Clark University (1)
• Dalarna University College Electronic Archive (10)
• Digital Archives@Colby (2)
• Digital Commons - Michigan Tech (5)
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• Digital Commons @ DU | University of Denver Research (15)
• Digital Commons @ Winthrop University (1)
• Digital Peer Publishing (8)
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• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (78)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
• Greenwich Academic Literature Archive - UK (3)
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• Memoria Académica - FaHCE, UNLP - Argentina (6)
• Ministerio de Cultura, Spain (2)
• National Center for Biotechnology Information - NCBI (12)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (2)
• Publishing Network for Geoscientific & Environmental Data (2)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (40)
• Queensland University of Technology - ePrints Archive (21)
• ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal (22)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (10)
• Royal College of Art Research Repository - Uninet Kingdom (2)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (1)
• SAPIENTIA - Universidade do Algarve - Portugal (1)
• SerWisS - Server für Wissenschaftliche Schriften der Fachhochschule Hannover (1)
• Universidad Autónoma de Nuevo León, Mexico (2)
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