KHAN, ANAM NISAR, Zafar Iqbal et al. 83. Appraisal of chromium and cobalt contents of vegetables grown in soil irrigated with sewage water: A risk for consumers’ health. Pure and Applied Biology (PAB), [S.l.], v. 8, n. 1, p. 804-812, mar. 2019. ISSN 2304-2478. Available at: <https://thepab.org/index.php/journal/article/view/812>. Date accessed: 13 july 2020.