Karakaseva, Elizabeta, Blazo Boev, and Vesna Zajkova. “Total and Extractable Forms of Cu, Zn, Ni, Cr, and Fe in Vineyard Soil (Valandovo Valley, Macedonia) Determined by a Sequential Extraction Procedure”. Macedonian Journal of Chemistry and Chemical Engineering 31, no. 2 (December 20, 2012): 271–283. Accessed April 30, 2024. https://mjcce.org.mk/index.php/MJCCE/article/view/26.