Analysis of the quality of the recreational water in spas in the City of Açailândia, Maranhão, Brazil. Research, Society and Development, [S. l.], v. 10, n. 13, p. e264101321080, 2021. DOI: 10.33448/rsd-v10i13.21080. Disponível em: https://rsdjournal.org/rsd/article/view/21080. Acesso em: 5 dec. 2025.