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• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (1)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (9)
• Biodiversity Heritage Library, United States (58)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (3)
• Brock University, Canada (6)
• CentAUR: Central Archive University of Reading - UK (2)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (1)
• Consorci de Serveis Universitaris de Catalunya (CSUC), Spain (5)
• CUNY Academic Works (39)
• Digital Commons @ DU | University of Denver Research (1)
• DigitalCommons - The University of Maine Research (1)
• DigitalCommons@The Texas Medical Center (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (1)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (12)
• Harvard University (343)
• Memoria Académica - FaHCE, UNLP - Argentina (37)
• Ministerio de Cultura, Spain (2)
• Publishing Network for Geoscientific & Environmental Data (1)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (1)
• Universidad Autónoma de Nuevo León, Mexico (1)
• Universidad de Alicante (2)
• Universidad del Rosario, Colombia (2)
• Universidad Politécnica de Madrid (2)
• Université de Lausanne, Switzerland (1)
• Université de Montréal, Canada (1)
• University of Michigan (431)
• University of Queensland eSpace - Australia (15)
• USA Library of Congress (20)