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• Academic Research Repository at Institute of Developing Economies (1)
• Applied Math and Science Education Repository - Washington - USA (1)
• Aquatic Commons (18)
• Archive of European Integration (11)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (3)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (11)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (2)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (1)
• Biodiversity Heritage Library, United States (5)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (23)
• Boston University Digital Common (4)
• Brock University, Canada (115)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• CaltechTHESIS (1)
• Cambridge University Engineering Department Publications Database (2)
• CentAUR: Central Archive University of Reading - UK (36)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (2)
• Coffee Science - Universidade Federal de Lavras (8)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (46)
• Cornell: DigitalCommons@ILR (1)
• Dalarna University College Electronic Archive (1)
• Deakin Research Online - Australia (68)
• Digital Archives@Colby (4)
• Digital Commons - Michigan Tech (2)
• Digital Commons @ Winthrop University (3)
• DigitalCommons - The University of Maine Research (1)
• DigitalCommons@The Texas Medical Center (1)
• DigitalCommons@University of Nebraska - Lincoln (3)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (1)
• Duke University (1)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (3)
• Harvard University (3)
• Helda - Digital Repository of University of Helsinki (1)
• Indian Institute of Science - Bangalore - Índia (2)
• Instituto Politécnico do Porto, Portugal (1)
• Ministerio de Cultura, Spain (1)
• National Center for Biotechnology Information - NCBI (7)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (1)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (101)
• QSpace: Queen's University - Canada (4)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (70)
• Queensland University of Technology - ePrints Archive (49)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (2)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (1)
• Universidad de Alicante (3)
• Universidad del Rosario, Colombia (5)
• Universidad Politécnica de Madrid (2)
• Université de Montréal, Canada (92)
• University of Connecticut - USA (10)
• University of Michigan (263)