1. "Medio ambiente: Biocidas, fome e meio ambiente."Folha de S. Paulo, (1989 March 8).

1. "Medio ambiente: Biocidas, fome e meio ambiente."Folha de S. Paulo, (1989 March 8)., Box: 12. 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/373333 Accessed September 26, 2026.