IQBAL, K.; SHAFIQ, T.; AHMED, K. Comparative Study of Heavy Metals in Selected Vegetables Collected from Different Sources: Heavy Metals in Vegetables. Biological Sciences - PJSIR, [S. l.], v. 52, n. 3, p. 134–137, 2009. Disponível em: http://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/535. Acesso em: 7 jun. 2025.