COMPARATIVE EXTRACTION OF Mn AND Pb USING EDTA AND CITRATE TO ASSESS THEIR MOBILITY FROM TWO DUMPSITES IN ZARIA METROPOLIS. FJS [Internet]. 2021 Aug. 17 [cited 2025 Sep. 11];5(1):558-65. Available from: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/685