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• Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (1)
• Applied Math and Science Education Repository - Washington - USA (2)
• Biodiversity Heritage Library, United States (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (7)
• Brock University, Canada (2)
• Bulgarian Digital Mathematics Library at IMI-BAS (1)
• CentAUR: Central Archive University of Reading - UK (3)
• Consorci de Serveis Universitaris de Catalunya (CSUC), Spain (2)
• CORA - Cork Open Research Archive - University College Cork - Ireland (1)
• CUNY Academic Works (3)
• Digital Archives@Colby (4)
• Digital Commons @ Winthrop University (1)
• Digital Commons at Florida International University (1)
• DigitalCommons@University of Nebraska - Lincoln (1)
• Digitale Sammlungen - Goethe-Universität Frankfurt am Main (2)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (2)
• Harvard University (867)
• Institute of Public Health in Ireland, Ireland (8)
• Ministerio de Cultura, Spain (1)
• Publishing Network for Geoscientific & Environmental Data (9)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (1)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (3)
• Scottish Institute for Research in Economics (SIRE) (SIRE), United Kingdom (2)
• Universidad Politécnica de Madrid (1)
• University of Connecticut - USA (1)
• University of Michigan (68)