Effect of COVID-19 Lockdown on Heavy Metal Contamination in Yamuna River Water of Delhi Region . Journal of Indian Association for Environmental Management (JIAEM), [S. l.], v. 42, n. 2, p. 21–25, 2023. Disponível em: https://or.niscpr.res.in/index.php/JIAEM/article/view/1039. Acesso em: 6 jun. 2026.