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G. GRAMACHO W. Robert S. Erikson, Michael B. Mackuen .y James A. Stimson, The Macro Polity, Cambridge, Cambridge University Press, 2002, 470 p. PyG [Internet]. 2005 Apr. 13 [cited 2026 Oct. 13];12(2):331-3. Available from: http://www.politicaygobierno.cide.edu/index.php/pyg/article/view/302