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13.G. "O democratismo da classe operária e a Constituinte."BH [Belo Horizonte ?]:, 1980 August 15., Box: 2, Folder: 5. Eduardo Sarno Collection of Leftist Movements in Brazil, 2002-03. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/370446 Accessed September 26, 2026.