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• Academic Archive On-line (Stockholm University; Sweden) (1)
• Adam Mickiewicz University Repository (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (1)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
• Aquatic Commons (22)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• Archive of European Integration (36)
• Aston University Research Archive (1)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (2)
• Biblioteca Digital de la Universidad Católica Argentina (4)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (59)
• Boston University Digital Common (1)
• Brock University, Canada (70)
• Bucknell University Digital Commons - Pensilvania - USA (1)
• Cambridge University Engineering Department Publications Database (4)
• CentAUR: Central Archive University of Reading - UK (12)
• Center for Jewish History Digital Collections (4)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (1)
• Digital Commons @ DU | University of Denver Research (2)
• Digital Commons @ Winthrop University (3)
• Digital Commons at Florida International University (3)
• DigitalCommons@University of Nebraska - Lincoln (2)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (2)
• Duke University (1)
• Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (5)
• Glasgow Theses Service (1)
• Harvard University (76)
• Helda - Digital Repository of University of Helsinki (5)
• Memoria Académica - FaHCE, UNLP - Argentina (11)
• Ministerio de Cultura, Spain (1)
• Portal de Revistas Científicas Complutenses - Espanha (6)
• Publishing Network for Geoscientific & Environmental Data (118)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (22)
• Queensland University of Technology - ePrints Archive (7)
• RCAAP - Repositório Científico de Acesso Aberto de Portugal (1)
• Repositório Científico do Instituto Politécnico de Lisboa - Portugal (3)
• Repositório Institucional da Universidade Estadual de São Paulo - UNESP (1)
• Repositorio Institucional de la Universidad de Málaga (3)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (9)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (1)
• SerWisS - Server für Wissenschaftliche Schriften der Fachhochschule Hannover (1)
• South Carolina State Documents Depository (1)
• Universidad Autónoma de Nuevo León, Mexico (4)
• Universidad de Alicante (1)
• Universidad del Rosario, Colombia (3)
• Universidad Politécnica de Madrid (2)
• Universidade Federal do Pará (1)
• Université de Montréal, Canada (3)
• University of Michigan (433)
• University of Queensland eSpace - Australia (2)
• USA Library of Congress (6)
• WestminsterResearch - UK (2)