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. DOI: 10.33899/berj.2011.Vol10.Iss1.38608. Disponível em: https://berj.uomosul.edu.iq/index.php/berj/article/view/38608. Acesso em: 22 aug. 2026.