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• AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
• Applied Math and Science Education Repository - Washington - USA (2)
• Aquatic Commons (35)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (4)
• Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
• Aston University Research Archive (16)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (2)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (2)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (27)
• Boston University Digital Common (2)
• Brock University, Canada (2)
• Bucknell University Digital Commons - Pensilvania - USA (3)
• Bulgarian Digital Mathematics Library at IMI-BAS (2)
• CaltechTHESIS (5)
• Cambridge University Engineering Department Publications Database (1)
• CentAUR: Central Archive University of Reading - UK (51)
• Chapman University Digital Commons - CA - USA (1)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (9)
• Clark Digital Commons--knowledge; creativity; research; and innovation of Clark University (2)
• Cochin University of Science & Technology (CUSAT), India (1)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (9)
• Dalarna University College Electronic Archive (1)
• Digital Archives@Colby (2)
• Digital Commons - Michigan Tech (3)
• Digital Commons - Montana Tech (2)
• Digital Commons at Florida International University (5)
• Digital Peer Publishing (1)
• DigitalCommons@The Texas Medical Center (2)
• DigitalCommons@University of Nebraska - Lincoln (7)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (3)
• DRUM (Digital Repository at the University of Maryland) (3)
• Duke University (3)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (9)
• Harvard University (5)
• Helda - Digital Repository of University of Helsinki (4)
• Indian Institute of Science - Bangalore - Índia (9)
• Línguas & Letras - Unoeste (1)
• Massachusetts Institute of Technology (2)
• Memoria Académica - FaHCE, UNLP - Argentina (3)
• Ministerio de Cultura, Spain (2)
• National Center for Biotechnology Information - NCBI (18)
• Portal de Revistas Científicas Complutenses - Espanha (3)
• Publishing Network for Geoscientific & Environmental Data (16)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (17)
• Queensland University of Technology - ePrints Archive (27)
• Repositorio Académico de la Universidad Nacional de Costa Rica (3)
• Repositorio de la Vicerrectoría de Investigación de la Universidad de Costa Rica (1)
• Repositório digital da Fundação Getúlio Vargas - FGV (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (36)
• School of Medicine, Washington University, United States (3)
• Scientific Open-access Literature Archive and Repository (1)
• Universidad del Rosario, Colombia (20)
• Universidad Politécnica de Madrid (1)
• Universidade Federal do Pará (3)
• Universidade Federal do Rio Grande do Norte (UFRN) (2)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (2)
• Université de Lausanne, Switzerland (5)
• Université de Montréal, Canada (5)
• University of Michigan (186)
• University of Queensland eSpace - Australia (11)
• University of Washington (3)
• USA Library of Congress (1)
• WestminsterResearch - UK (1)