WANG, Jie. Overview and prospect of the history of air pollution control in the United States in the 20th century. International Journal of Social Sciences and Public Administration, U.K., v. 2, n. 1, p. 139–147, 2024. DOI: 10.62051/ijsspa.v2n1.18. Disponível em: https://wepub.org/index.php/IJSSPA/article/view/597. Acesso em: 14 may. 2026.