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• Adam Mickiewicz University Repository (1)
• ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (1)
• BORIS: Bern Open Repository and Information System - Berna - Suiça (1)
• Bulgarian Digital Mathematics Library at IMI-BAS (5)
• Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (21)
• Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
• Instituto Politécnico do Porto, Portugal (1)
• Ministerio de Cultura, Spain (1)
• National Center for Biotechnology Information - NCBI (1)
• Publishing Network for Geoscientific & Environmental Data (6)
• QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (1)
• Scielo Saúde Pública - SP (1)
• Universidade Complutense de Madrid (1)
• Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
• Université de Lausanne, Switzerland (2)
• University of Michigan (3)