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1
Publicado en: Knowledge communities / edited by Javier Echeverría, Andoni Alonso and Pedro J. Oiarzabal. , Reno : Center for Basques Studies, University of Nevada Reno, [2011]., p. 53-71
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2
Publicado en: Social economy and social participation : the ways of the Basques , Donostia-San Sebastián : Gezki ; Madrid : Marcial Pons, D.L. 1996, p. 261-276
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3