9. Hec. "Breve avaliação do trabalho na área sindical 79/80." Pará:, undated

9. Hec. "Breve avaliação do trabalho na área sindical 79/80." Pará:, undated, Box: 25. 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/375593 Accessed September 26, 2026.