“COMPARATIVE EXTRACTION OF Mn AND Pb USING EDTA AND CITRATE TO ASSESS THEIR MOBILITY FROM TWO DUMP SITES IN ZARIA METROPOLIS”. FUDMA JOURNAL OF SCIENCES 5, no. 3 (November 1, 2021): 9–17. Accessed September 11, 2025. http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/737.