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• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (2)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
• Applied Math and Science Education Repository - Washington - USA (81)
• Aquatic Commons (1)
• Biblioteca Digital da Câmara dos Deputados (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (11)
• Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (1)
• Bibloteca do Senado Federal do Brasil (1)
• Biodiversity Heritage Library, United States (11)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (24)
• Brock University, Canada (54)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• Cambridge University Engineering Department Publications Database (7)
• CentAUR: Central Archive University of Reading - UK (8)
• Center for Jewish History Digital Collections (4)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (4)
• Clark Digital Commons--knowledge; creativity; research; and innovation of Clark University (2)
• Digital Commons - Michigan Tech (4)
• Digital Commons - Montana Tech (15)
• Digital Commons @ Winthrop University (1)
• Digital Repository at Iowa State University (1)
• DigitalCommons@The Texas Medical Center (1)
• DigitalCommons@University of Nebraska - Lincoln (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (1)
• Duke University (1)
• Harvard University (42)
• Indian Institute of Science - Bangalore - Índia (1)
• Instituto Gulbenkian de Ciência (1)
• Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (1)
• Ministerio de Cultura, Spain (4)
• National Center for Biotechnology Information - NCBI (3)
• Portal de Revistas Científicas Complutenses - Espanha (2)
• Publishing Network for Geoscientific & Environmental Data (2)
• QSpace: Queen's University - Canada (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (13)
• Queensland University of Technology - ePrints Archive (17)
• ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (126)
• Universidad Autónoma de Nuevo León, Mexico (2)
• Universidad del Rosario, Colombia (13)
• Universidad Politécnica de Madrid (3)
• Universidade de Lisboa - Repositório Aberto (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (2)
• Université de Lausanne, Switzerland (2)
• Université de Montréal, Canada (1)
• University of Michigan (499)
• USA Library of Congress (2)