TAWFIQ, L. N. M.; TAWFIQ, M. N. M. Using Semi-Analytic Method to Decreasing Dangers of Lead. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 24, n. 3, 2016. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/838. Acesso em: 2 apr. 2025.