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1
Publicado en: Basque political systems / edited by Pedro Ibarra Güell and Xabier Irujo Ametzaga ; translated by Cameron J. Watson. , Reno : Center for Basques Studies, University of Nevada Reno, [2011]., p. 185-208
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2Brussels : European Research Institute , [2009]“...Euskadi Política y gobierno S.XX-XXI...”
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