Study and Comparison of Some Toxic Metal Elements Concentration in Cigarette Ashes and Rolling Papers. Libyan Journal of Ecological & Environmental Sciences and Technology, [S. l.], v. 5, n. 1, p. 17–24, 2025. Disponível em: https://www.srcest.org.ly/journal/index.php/ljest/article/view/88. Acesso em: 25 sep. 2025.