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Las empresas petroleras de participación estatal anteriores a la creación de PEMEX en México. Notas preliminares. Tzintzun, Revista de Estudios Históricos, [S. l.], n. 83, p. 347–375, 2025. DOI: 10.35830/xcxm2712. Disponível em: https://www.tzintzun.umich.mx/TZN/article/view/1894. Acesso em: 28 mar. 2026.