“Programa do Galinho” on Radio Educadora do Maranhão: the challenge posed by the migration from AM to FM band to radiophony with a bias in the rurban tradition. Radiofonias [Internet]. 2022 Jan. 14 [cited 2026 Nov. 12];12(3):148-62. Available from: https://periodicos.ufop.br/radiofonias/article/view/5145