“The level of heavy metal pollution (Pb, Cd) of cotton fields Maktaaral district of South Kazakhstan (for example, rural district «Yeraliyev»)”, EJE, vol. 37, no. 1, Jan. 2016, Accessed: Jul. 13, 2026. [Online]. Available: https://bulletin-ecology.kaznu.kz/index.php/1-eco/article/view/60