Petkovski, D., Melovski, L. and Stojanovska-Petkovska, R. (1997) “The content of some heavy metals in the wheat grain grown on Ovche Pole chernozems”, Macedonian Journal of Ecology and Environment, 5(1), pp. 35–40. Available at: https://mjee.org.mk/index.php/mjee/article/view/47 (Accessed: 7May2024).