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• Aberdeen University (3)
• Aberystwyth University Repository - Reino Unido (1)
• AMS Tesi di Dottorato - Alm@DL - Università di Bologna (2)
• AMS Tesi di Laurea - Alm@DL - Università di Bologna (2)
• Aquatic Commons (9)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (3)
• Archive of European Integration (10)
• Aston University Research Archive (1)
• Avian Conservation and Ecology - Eletronic Cientific Hournal - Écologie et conservation des oiseaux: (2)
• Biblioteca Digital | Sistema Integrado de Documentación | UNCuyo - UNCUYO. UNIVERSIDAD NACIONAL DE CUYO. (1)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (10)
• Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (7)
• Biblioteca Digital de la Universidad Católica Argentina (1)
• Biodiversity Heritage Library, United States (40)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (62)
• Boston University Digital Common (2)
• Brock University, Canada (7)
• CaltechTHESIS (1)
• Cambridge University Engineering Department Publications Database (6)
• CentAUR: Central Archive University of Reading - UK (19)
• Chinese Academy of Sciences Institutional Repositories Grid Portal (16)
• Clark Digital Commons--knowledge; creativity; research; and innovation of Clark University (1)
• Cochin University of Science & Technology (CUSAT), India (18)
• Collection Of Biostatistics Research Archive (2)
• Comissão Econômica para a América Latina e o Caribe (CEPAL) (11)
• CORA - Cork Open Research Archive - University College Cork - Ireland (5)
• Digital Archives@Colby (1)
• Digital Commons - Montana Tech (1)
• Digital Commons @ DU | University of Denver Research (1)
• Digital Commons @ Winthrop University (9)
• Digital Commons at Florida International University (1)
• Digital Peer Publishing (1)
• DigitalCommons@The Texas Medical Center (3)
• DigitalCommons@University of Nebraska - Lincoln (10)
• eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (1)
• Greenwich Academic Literature Archive - UK (1)
• Harvard University (283)
• Helda - Digital Repository of University of Helsinki (24)
• Indian Institute of Science - Bangalore - Índia (17)
• Instituto Politécnico do Porto, Portugal (2)
• Massachusetts Institute of Technology (1)
• Memoria Académica - FaHCE, UNLP - Argentina (15)
• Ministerio de Cultura, Spain (2)
• National Center for Biotechnology Information - NCBI (6)
• Plymouth Marine Science Electronic Archive (PlyMSEA) (6)
• Portal de Revistas Científicas Complutenses - Espanha (1)
• Publishing Network for Geoscientific & Environmental Data (17)
• QSpace: Queen's University - Canada (2)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (27)
• Queensland University of Technology - ePrints Archive (41)
• Repositório Institucional da Universidade de Aveiro - Portugal (1)
• Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (41)
• RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
• School of Medicine, Washington University, United States (3)
• Universidad Autónoma de Nuevo León, Mexico (3)
• Universidad de Alicante (2)
• Universidad del Rosario, Colombia (4)
• Universidad Politécnica de Madrid (11)
• Universidade de Lisboa - Repositório Aberto (3)
• Universidade Federal do Rio Grande do Norte (UFRN) (1)
• Universitat de Girona, Spain (2)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• Université de Montréal, Canada (2)
• University of Innsbruck Digital Library - Austria (1)
• University of Michigan (149)
• University of Queensland eSpace - Australia (3)
• Worcester Research and Publications - Worcester Research and Publications - UK (1)