طه محمود م. A comparative study of bacterial Pathogenesis isolated from naso oral cavity for smokers and non smokers in different ages. College of Basic Education Research Journal, [S. l.], v. 10, n. 1, p. 443–455, 2011. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/38608. Acesso em: 27 oct. 2025.