Juçara da Silva Barbosa de Mello. (2021). Work identities: socio-professional hierarchies and solidarity values entered from the centrality of the factory work (1930-1960). Locus: Revista De Historia, 15(1). https://doi.org/10.34019/2594-8296.2009.v15.31795 (Original work published 27 de agosto de 2020)